In the ongoing effort to refine and improve the scientific accuracy of the Plants of Special concern list work reported here resulted in recommendations for the reclassification of eleven plants. The revised classifications which we recommended were the result of 1) additional field data on current status; 2) new discoveries in the field, 3) adoption of taxonomic revisions reported in recent botanical literature. Our 2000 field work resulted in the documentation of 162 field occurrences at 69 sites. Inflated bladderwort (Utricularia inflata) was added to the flora of Pennsylvania as a result. In order to make information about the state flora more accessible the Pennsylvania Flora Website was redesigned and expanded. The new look was launched in January 2001 at http://www.upenn/edu/paflora. In addition several site reviews were conducted in response to PNDI  hits 

Block, Timothy A

Rhoads, Ann F

English

Kosmopolis

University of Pennsylvania
ScholarlyCommons
Research Works (Botany) Botany
2001
Surveys of TU Plants, Taxonomic Studies,
Pennsylvania Flora Project Web Site, and
Environmental Review
Ann F. Rhoads
University of Pennsylvania
Timothy A. Block
University of Pennsylvania
Follow this and additional works at: https://repository.upenn.edu/morrisarboretum_botanyworks
Part of the Botany Commons
Final Report to the Wild Resources Conservation Fund ME#389184
This paper is posted at ScholarlyCommons. https://repository.upenn.edu/morrisarboretum_botanyworks/5
For more information, please contact repository@pobox.upenn.edu.
Rhoads, Ann F. and Block, Timothy A., "Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project Web Site, and
Environmental Review" (2001). Research Works (Botany). 5.
https://repository.upenn.edu/morrisarboretum_botanyworks/5
Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project Web
Site, and Environmental Review
Abstract
In the ongoing effort to refine and improve the scientific accuracy of the Plants of Special concern list work
reported here resulted in recommendations for the reclassification of eleven plants. The revised classifications
which we recommended were the result of 1) additional field data on current status; 2) new discoveries in the
field, 3) adoption of taxonomic revisions reported in recent botanical literature. Our 2000 field work resulted
in the documentation of 162 field occurrences at 69 sites. Inflated bladderwort (Utricularia inflata) was added
to the flora of Pennsylvania as a result. In order to make information about the state flora more accessible the
Pennsylvania Flora Website was redesigned and expanded. The new look was launched in January 2001 at
http://www.upenn/edu/paflora. In addition several site reviews were conducted in response to PNDI "hits".
Disciplines
Botany
Comments
Final Report to the Wild Resources Conservation Fund ME#389184
This technical report is available at ScholarlyCommons: https://repository.upenn.edu/morrisarboretum_botanyworks/5
 
 
 
 
 
Final Report to the Wild Resources Conservation Fund 
 
ME#389184 
 
 
 
 
 
 
Title: Surveys of TU Plants, Taxonomic Studies, 
Pennsylvania Flora Project Web Site, and Environmental 
Review 
 
 
 
 
 
 
 
 
 
 
 
Ann F. Rhoads and Timothy A. Block 
Morris Arboretum of the University of Pennsylvania 
9414 Meadowbrook Ave. 
Philadelphia, PA 19118 
 
Submitted May 10, 2001 
 2 
 
Final Report to the Wild Resources Conservation Fund 
ME#389184 
Title: Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project 
Web Site, and Environmental Review 
 
Ann F. Rhoads and Timothy A. Block 
Morris Arboretum of the University of Pennsylvania 
9414 Meadowbrook Ave. 
Philadelphia, PA 19118 
 
 
Abstract: 
In the ongoing effort to refine and improve the scientific accuracy of the Plants of Special 
concern list work reported here resulted in recommendations for the reclassification of eleven 
plants.  The revised classifications which we recommended were the result of 1) additional field 
data on current status; 2) new discoveries in the field, 3) adoption of taxonomic revisions 
reported in recent botanical literature.  Our 2000 field work resulted in the documentation of 162 
field occurrences at 69 sites.  Inflated bladderwort (Utricularia inflata) was added to the flora of 
Pennsylvania as a result.  In order to make information about the state flora more accessible the 
Pennsylvania Flora Website was redesigned and expanded.  The new look was launched in 
January 2001 at http://www.upenn/edu/paflora.  In addition several site reviews were conducted 
in response to PNDI "hits". 
 
Objective:  
This is a 4 part project, the objectives of each section are as follows: 
 
1) Field and herbarium surveys intended to continue to collect the information necessary 
to refine the classification of plants on the Plants of Special Concern list and other plants 
recommended for listing by the Vascular Plants Technical Committee. 
 
2) The treatment of several plant species that have been proposed for listing under PNDI 
is complicated by uncertainties regarding taxonomic status.  We conducted a review of 
pertinent recent botanical literature regarding several such problem taxa to determine 
how they should be treated in the PNDI listings. 
 
3) A searchable, online version of the PA Flora Database was initiated in June 1997 at 
our website http://upenn.edu/paflora .  We requested funding to support periodic 
monitoring and updating of this important resource on all of the plants of Pennsylvania. 
 
4) Morris Arboretum staff were available to provide environmental review services to the 
Bureau of Forestry as needed. 
 
 
 3 
Justification: 
1) The Plants of Special Concern list is still being reviewed and updated to assure that the 
status of each listed plant is well documented and justified, and that all plants that require 
protection are appropriately classified.  Species currently listed as TU require study 
before a more accurate classification status can be recommended.   
 
2) A number of plants proposed for PNDI listing require clarification of their taxonomic 
status to resolve uncertainties that complicate the appropriate treatment of some taxa 
under PNDI.  We propose to investigate several problem "species" drawing on recent 
pertinent botanical literature. 
   
3) The Pennsylvania Flora Project web site containing an online, searchable version of 
the PA Flora Database has made up-to-date information about the plants of Pennsylvania 
readily available throughout the state and the world for the first time.  The site 
consistently registers between 600 and 1000 users weekly, proving that there is a demand 
for the information.   However, the web site, and the main database that supports it, need 
regular maintenance and updating in order to remain current and useful. 
   
4) The extensive experience and expertise of the Morris Arboretum Botany Department 
will be available for consultation and/or field visits in eastern PA counties for the purpose 
of environmental reviews where occurrences of PNDI listed plants may be affected. 
 
Materials and Methods: 
 
A major part of this years' effort was directed at resolving classification status of PNDI-listed 
vascular plants.  This involved new field surveys, synthesis of current and previous field studies, 
and library and herbarium research. 
 
PNDI reviews involved field visits to potential sites of conflicts such as the PennDOT Chalfont 
Borough Bristol Road extension site visit – May 4, 2001.  Several other PNDI "hits" were field 
checked for other agencies under private contractual arrangements. 
 
Pennsylvania Flora Project Website enhancement involved approximately 2 weeks of Tim 
Block's time to design and implement changes in the website to enhance information content, 
appearance, and accessibility. 
 
 
Products Delivered in Addition to this Final Report: 
 
PNDI field forms were submitted to the Eastern Pennsylvania PNDI office at Middletown with 
duplicates provided to the Bureau of Forestry Division of Ecological Services PNDI office on 
January 23, 2001 for all field studies conducted during calendar year 2000.  Field forms were 
submitted for 162 element occurrences at 69 sites representing work under a contract with the 
Bureau of State Parks, work on a survey of Pocono lakes and miscellaneous field surveys 
conducted during the 2000 field season. 
 4 
 
Recommendations were submitted to the annual meeting of the Rare Plant Forum and Vascular 
Plants Technical Committee (see below). 
 
 
Results and Conclusions: 
 
PNDI status - Recommendations for refinements in the PNDI lists 
Andropogon glomeratus  (Walter) BSP. - TU to PR? 
syn. A. virginicus L. var. abbreviatus (Hackel) Fern. & Griscom. 
habitat and range according to Cronquist: wet soil, West Indies and Central America north to 
CA, AR, KY, VA and along the coastal plain to MA. 
PA: Estimated total number of plants >10,000 in approximately 12 locations.  The largest extant 
population is probably the one at French Creek State Park where there are several thousand 
plants.  Other populations are smaller, but stable.  Several coastal plain sites however are 
vulnerable. 
 
Panicum longiligulatum  - TU to N 
This species has been lumped in with the common species Panicum acuminatum in The Plants of 
Pennsylvania (Rhoads and Block 2000). 
 
Prunus pumila L.  -  PR to N 
Prunus pumila L. var. depressa (Pursh) Bean – N to PE 
Prunus pumila L. var. pumila – N to PX 
Prunus pumila L. var. susquehannae (Willd.) H. Jaeger – N to PT 
A recent paper  (Catling et al. 1999) presented evidence supporting recognition of Prunus pumila 
var. susquehannae at the species level.  In addition keys for distinguishing the species and 
varieties were included.  In order to bring the Plants of Special Concern list into agreement with 
this recent interpretation of the taxa, we recommended that the varieties each be assigned a 
distinct status. 
 
Ranunculus aquatilis L. – N to PR 
Ranunculus longirostris (Chaix) Bosch – PT to N 
Ranunculus trichophyllus Chaix – PR to N 
The treatment of these taxa in recent manuals including Volume 3 of Flora of North America 
(Flora of North America Editorial Committee 1997) and Plants of Pennsylvania, an Illustrated 
Manual (Rhoads and Block 2000) involves lumping Ranunculus longirostris and Ranunculus 
trichophyllus in the circumboreal species Ranunculus aquatilis.  The changes in the PNDI list 
were recommended to reflect these current botanical references. 
 
Utricularia inflata Walter - N to TU 
habitat and range according to Cronquist (Gleason and Cronquist 1991): ponds along the coastal 
plain DE to FL 
PA: collected at one site (lake) each in Pike and Monroe Counties in 2000, found to have been 
collected at 3 sites in Sullivan County 1993-1997, but recorded at the time as U. radiata. 
 5 
 
Comments: There has been some taxonomic disagreement regarding the status of the 2 species of 
inflated bladderworts.  U. radiata Small has been considered a variety of U. inflata (U. inflata 
Walter var. minor Chapman or U. inflata Walter var. radiata (Small) Stone).  However, Peter 
Taylor in his 1989 monograph on the genus Utricularia (Taylor 1989) recognizes both taxa at 
species rank as do Crow and Hellquist (2000).   
 
Utricularia purpurea - PR to N 
habitat and range according to Cronquist: lakes, ponds and ditches Quebec and Nova Scotia to 
MN and northern IN and south along the coastal plain to FL and LA. 
PA: since 1986 collected in 19-20 ponds and lakes in the Pocono area, in most cases populations 
of thousands to tens of thousands of plants were noted.  It is present in natural and artificial water 
bodies and undoubtedly is present at more sites that have yet to be inventoried. 
 
Utricularia radiata Small - PE to PX 
habitat and range according to Cronquist: ponds along or near the coastal plain ME to FL and 
TX. 
PA: several early (1865-1927) collections from the Bristol area of Bucks County, no collections 
since 1927. 
 
Pennsylvania Flora Website update 
Changes were implemented in January 2001;  See http://www.upenn.edu/paflora. 
 
PNDI Site Review 
A field visit to the PennDOT Bristol Road extension was made in May 4, 2001 to check for 
Lycopodiella appressa and Eleocharis olivacea which were reported from the site in 1986 and 
1998 respectively. 
 
An initial paper review of the Crown Tower site in Tunkhannock Township, Monroe County was 
conducted for CMC Engineering.  Applicant did not request further site review. 
 
A site review was conducted at the Scranton/Wilkes-Barre Airport expansion site under contract 
with Acker Associates to check for Scirpus ancistrochaetus habitat. 
 
A site survey was conducted at the Valley View II residential development in Horsham 
Township, Bucks County under contract with DelVal Soil and Environmental Consultants, Inc. 
for conflicts with a nearby population of Amelanchier obovalis. 
 6 
 
 
Discussion and Management Recommendations: 
 
The following recommendations were made to the annual Rare Plant Forum for changes in the 
status of species on the Plants of Special Concern List.  All of these recommendations were 
accepted by the Rare Plant Forum and the Vascular Plants Technical Committee. 
 
     current status   recommended status 
 Andropogon glomeratus  PT    PR 
 Panicum longiligulatum  TU    none 
 Prunus pumila var. depressa  none    PE 
 Prunus pumila var. pumila  none    PX 
 Prunus pumila var. susquehannae none    PT  
 Ranunculus aquatilis   none    PR 
 Ranunculus longirostris  PT    none 
 Ranunculus trichophyllus  PR    none 
 Utricularia inflata   none    TU 
 Utricularia purpurea    PR    none 
 Utricularia radiata   PE    PX 
 
 
 
 
 
Literature Cited: 
Catling, P. M., S. M. McKay-Kuja, and G. Mitrow. 1999. Rank and typification in North 
American dwarf cherries, and a key to the taxa. Taxon 48: 483-488. 
 
Crow, Garrett E. and c. Barre Hellquist. 2000. Aquatic and Wetland Plants of Northeastern 
North America.  The University of Wisconsin Press, Madison 
 
Flora of North America Editorial Committee. 1997. Flora of North America Volume 3. Oxford 
University Press, New York 
 
Gleason, H. A. and A. Cronquist. 1991. Manual of the Vascular Plants of Northeastern United 
States and Adjacent Canada. New York Botanical garden, Bronx 
 
Rhoads, Ann Fowler and Timothy A. Block. The Plants of Pennsylvania, An Illustrated Manual. 
University of Pennsylvania Press, Philadelphia 
 
Taylor, P. 1989. The Genus Utricularia – A Taxonomic Monograph. Royal Botanic Gardens 
Kew, London 
 
 
 7 
 
Appendix:   
 
Herbarium Collections of PNDI-listed plants, calendar year 2000, all specimens deposited 
at the herbarium of the Morris Arboretum of the University of Pennsylvania (MOAR). 
 8 
 
 
 
 
 
 
 
May 10, 2001 
 
 
 
Chris Firestone 
DCNR Bureau of Forestry 
PO Box 8552 
Harrisburg, PA 17105-8552 
 
Dear Chris: 
 
Please find enclosed with this letter our final report for last year's Wild Resources 
Conservation Fund Grant, ME#389184.  The report contains a list of herbarium specimens 
collected to document the PNDI records.  Please recall that I delivered the field forms for 
these EOs to you back in January. 
 
Sincerely, 
 
 
 
Ann F. Rhoads, Ph.D. 
Senior Botanist, Pennsylvania Flora Project 
 
 
 
cc: Frank Felbaum, Wild Resources Conservation Fund 
 
 


Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project Web Site, and Environmental Review

ScholarlyCommons@Penn

University of PennsylvaniaScholarlyCommonsResearch Works (Botany) Botany2001Surveys of TU Plants, Taxonomic Studies,Pennsylvania Flora Project Web Site, andEnvironmental ReviewAnn F. RhoadsUniversity of PennsylvaniaTimothy A. BlockUniversity of PennsylvaniaFollow this and additional works at: https://repository.upenn.edu/morrisarboretum_botanyworksPart of the Botany CommonsFinal Report to the Wild Resources Conservation Fund ME#389184This paper is posted at ScholarlyCommons. https://repository.upenn.edu/morrisarboretum_botanyworks/5For more information, please contact repository@pobox.upenn.edu.Rhoads, Ann F. and Block, Timothy A., "Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project Web Site, andEnvironmental Review" (2001). Research Works (Botany). 5.https://repository.upenn.edu/morrisarboretum_botanyworks/5Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project WebSite, and Environmental ReviewAbstractIn the ongoing effort to refine and improve the scientific accuracy of the Plants of Special concern list workreported here resulted in recommendations for the reclassification of eleven plants. The revised classificationswhich we recommended were the result of 1) additional field data on current status; 2) new discoveries in thefield, 3) adoption of taxonomic revisions reported in recent botanical literature. Our 2000 field work resultedin the documentation of 162 field occurrences at 69 sites. Inflated bladderwort (Utricularia inflata) was addedto the flora of Pennsylvania as a result. In order to make information about the state flora more accessible thePennsylvania Flora Website was redesigned and expanded. The new look was launched in January 2001 athttp://www.upenn/edu/paflora. In addition several site reviews were conducted in response to PNDI "hits".DisciplinesBotanyCommentsFinal Report to the Wild Resources Conservation Fund ME#389184This technical report is available at ScholarlyCommons: https://repository.upenn.edu/morrisarboretum_botanyworks/5     Final Report to the Wild Resources Conservation Fund  ME#389184       Title: Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project Web Site, and Environmental Review            Ann F. Rhoads and Timothy A. Block Morris Arboretum of the University of Pennsylvania 9414 Meadowbrook Ave. Philadelphia, PA 19118  Submitted May 10, 2001  2  Final Report to the Wild Resources Conservation Fund ME#389184 Title: Surveys of TU Plants, Taxonomic Studies, Pennsylvania Flora Project Web Site, and Environmental Review  Ann F. Rhoads and Timothy A. Block Morris Arboretum of the University of Pennsylvania 9414 Meadowbrook Ave. Philadelphia, PA 19118   Abstract: In the ongoing effort to refine and improve the scientific accuracy of the Plants of Special concern list work reported here resulted in recommendations for the reclassification of eleven plants.  The revised classifications which we recommended were the result of 1) additional field data on current status; 2) new discoveries in the field, 3) adoption of taxonomic revisions reported in recent botanical literature.  Our 2000 field work resulted in the documentation of 162 field occurrences at 69 sites.  Inflated bladderwort (Utricularia inflata) was added to the flora of Pennsylvania as a result.  In order to make information about the state flora more accessible the Pennsylvania Flora Website was redesigned and expanded.  The new look was launched in January 2001 at http://www.upenn/edu/paflora.  In addition several site reviews were conducted in response to PNDI "hits".  Objective:  This is a 4 part project, the objectives of each section are as follows:  1) Field and herbarium surveys intended to continue to collect the information necessary to refine the classification of plants on the Plants of Special Concern list and other plants recommended for listing by the Vascular Plants Technical Committee.  2) The treatment of several plant species that have been proposed for listing under PNDI is complicated by uncertainties regarding taxonomic status.  We conducted a review of pertinent recent botanical literature regarding several such problem taxa to determine how they should be treated in the PNDI listings.  3) A searchable, online version of the PA Flora Database was initiated in June 1997 at our website http://upenn.edu/paflora .  We requested funding to support periodic monitoring and updating of this important resource on all of the plants of Pennsylvania.  4) Morris Arboretum staff were available to provide environmental review services to the Bureau of Forestry as needed.    3 Justification: 1) The Plants of Special Concern list is still being reviewed and updated to assure that the status of each listed plant is well documented and justified, and that all plants that require protection are appropriately classified.  Species currently listed as TU require study before a more accurate classification status can be recommended.    2) A number of plants proposed for PNDI listing require clarification of their taxonomic status to resolve uncertainties that complicate the appropriate treatment of some taxa under PNDI.  We propose to investigate several problem "species" drawing on recent pertinent botanical literature.    3) The Pennsylvania Flora Project web site containing an online, searchable version of the PA Flora Database has made up-to-date information about the plants of Pennsylvania readily available throughout the state and the world for the first time.  The site consistently registers between 600 and 1000 users weekly, proving that there is a demand for the information.   However, the web site, and the main database that supports it, need regular maintenance and updating in order to remain current and useful.    4) The extensive experience and expertise of the Morris Arboretum Botany Department will be available for consultation and/or field visits in eastern PA counties for the purpose of environmental reviews where occurrences of PNDI listed plants may be affected.  Materials and Methods:  A major part of this years' effort was directed at resolving classification status of PNDI-listed vascular plants.  This involved new field surveys, synthesis of current and previous field studies, and library and herbarium research.  PNDI reviews involved field visits to potential sites of conflicts such as the PennDOT Chalfont Borough Bristol Road extension site visit – May 4, 2001.  Several other PNDI "hits" were field checked for other agencies under private contractual arrangements.  Pennsylvania Flora Project Website enhancement involved approximately 2 weeks of Tim Block's time to design and implement changes in the website to enhance information content, appearance, and accessibility.   Products Delivered in Addition to this Final Report:  PNDI field forms were submitted to the Eastern Pennsylvania PNDI office at Middletown with duplicates provided to the Bureau of Forestry Division of Ecological Services PNDI office on January 23, 2001 for all field studies conducted during calendar year 2000.  Field forms were submitted for 162 element occurrences at 69 sites representing work under a contract with the Bureau of State Parks, work on a survey of Pocono lakes and miscellaneous field surveys conducted during the 2000 field season.  4  Recommendations were submitted to the annual meeting of the Rare Plant Forum and Vascular Plants Technical Committee (see below).   Results and Conclusions:  PNDI status - Recommendations for refinements in the PNDI lists Andropogon glomeratus  (Walter) BSP. - TU to PR? syn. A. virginicus L. var. abbreviatus (Hackel) Fern. & Griscom. habitat and range according to Cronquist: wet soil, West Indies and Central America north to CA, AR, KY, VA and along the coastal plain to MA. PA: Estimated total number of plants >10,000 in approximately 12 locations.  The largest extant population is probably the one at French Creek State Park where there are several thousand plants.  Other populations are smaller, but stable.  Several coastal plain sites however are vulnerable.  Panicum longiligulatum  - TU to N This species has been lumped in with the common species Panicum acuminatum in The Plants of Pennsylvania (Rhoads and Block 2000).  Prunus pumila L.  -  PR to N Prunus pumila L. var. depressa (Pursh) Bean – N to PE Prunus pumila L. var. pumila – N to PX Prunus pumila L. var. susquehannae (Willd.) H. Jaeger – N to PT A recent paper  (Catling et al. 1999) presented evidence supporting recognition of Prunus pumila var. susquehannae at the species level.  In addition keys for distinguishing the species and varieties were included.  In order to bring the Plants of Special Concern list into agreement with this recent interpretation of the taxa, we recommended that the varieties each be assigned a distinct status.  Ranunculus aquatilis L. – N to PR Ranunculus longirostris (Chaix) Bosch – PT to N Ranunculus trichophyllus Chaix – PR to N The treatment of these taxa in recent manuals including Volume 3 of Flora of North America (Flora of North America Editorial Committee 1997) and Plants of Pennsylvania, an Illustrated Manual (Rhoads and Block 2000) involves lumping Ranunculus longirostris and Ranunculus trichophyllus in the circumboreal species Ranunculus aquatilis.  The changes in the PNDI list were recommended to reflect these current botanical references.  Utricularia inflata Walter - N to TU habitat and range according to Cronquist (Gleason and Cronquist 1991): ponds along the coastal plain DE to FL PA: collected at one site (lake) each in Pike and Monroe Counties in 2000, found to have been collected at 3 sites in Sullivan County 1993-1997, but recorded at the time as U. radiata.  5  Comments: There has been some taxonomic disagreement regarding the status of the 2 species of inflated bladderworts.  U. radiata Small has been considered a variety of U. inflata (U. inflata Walter var. minor Chapman or U. inflata Walter var. radiata (Small) Stone).  However, Peter Taylor in his 1989 monograph on the genus Utricularia (Taylor 1989) recognizes both taxa at species rank as do Crow and Hellquist (2000).    Utricularia purpurea - PR to N habitat and range according to Cronquist: lakes, ponds and ditches Quebec and Nova Scotia to MN and northern IN and south along the coastal plain to FL and LA. PA: since 1986 collected in 19-20 ponds and lakes in the Pocono area, in most cases populations of thousands to tens of thousands of plants were noted.  It is present in natural and artificial water bodies and undoubtedly is present at more sites that have yet to be inventoried.  Utricularia radiata Small - PE to PX habitat and range according to Cronquist: ponds along or near the coastal plain ME to FL and TX. PA: several early (1865-1927) collections from the Bristol area of Bucks County, no collections since 1927.  Pennsylvania Flora Website update Changes were implemented in January 2001;  See http://www.upenn.edu/paflora.  PNDI Site Review A field visit to the PennDOT Bristol Road extension was made in May 4, 2001 to check for Lycopodiella appressa and Eleocharis olivacea which were reported from the site in 1986 and 1998 respectively.  An initial paper review of the Crown Tower site in Tunkhannock Township, Monroe County was conducted for CMC Engineering.  Applicant did not request further site review.  A site review was conducted at the Scranton/Wilkes-Barre Airport expansion site under contract with Acker Associates to check for Scirpus ancistrochaetus habitat.  A site survey was conducted at the Valley View II residential development in Horsham Township, Bucks County under contract with DelVal Soil and Environmental Consultants, Inc. for conflicts with a nearby population of Amelanchier obovalis.  6   Discussion and Management Recommendations:  The following recommendations were made to the annual Rare Plant Forum for changes in the status of species on the Plants of Special Concern List.  All of these recommendations were accepted by the Rare Plant Forum and the Vascular Plants Technical Committee.       current status   recommended status  Andropogon glomeratus  PT    PR  Panicum longiligulatum  TU    none  Prunus pumila var. depressa  none    PE  Prunus pumila var. pumila  none    PX  Prunus pumila var. susquehannae none    PT   Ranunculus aquatilis   none    PR  Ranunculus longirostris  PT    none  Ranunculus trichophyllus  PR    none  Utricularia inflata   none    TU  Utricularia purpurea    PR    none  Utricularia radiata   PE    PX      Literature Cited: Catling, P. M., S. M. McKay-Kuja, and G. Mitrow. 1999. Rank and typification in North American dwarf cherries, and a key to the taxa. Taxon 48: 483-488.  Crow, Garrett E. and c. Barre Hellquist. 2000. Aquatic and Wetland Plants of Northeastern North America.  The University of Wisconsin Press, Madison  Flora of North America Editorial Committee. 1997. Flora of North America Volume 3. Oxford University Press, New York  Gleason, H. A. and A. Cronquist. 1991. Manual of the Vascular Plants of Northeastern United States and Adjacent Canada. New York Botanical garden, Bronx  Rhoads, Ann Fowler and Timothy A. Block. The Plants of Pennsylvania, An Illustrated Manual. University of Pennsylvania Press, Philadelphia  Taylor, P. 1989. The Genus Utricularia – A Taxonomic Monograph. Royal Botanic Gardens Kew, London    7  Appendix:    Herbarium Collections of PNDI-listed plants, calendar year 2000, all specimens deposited at the herbarium of the Morris Arboretum of the University of Pennsylvania (MOAR).  8        May 10, 2001    Chris Firestone DCNR Bureau of Forestry PO Box 8552 Harrisburg, PA 17105-8552  Dear Chris:  Please find enclosed with this letter our final report for last year's Wild Resources Conservation Fund Grant, ME#389184.  The report contains a list of herbarium specimens collected to document the PNDI records.  Please recall that I delivered the field forms for these EOs to you back in January.  Sincerely,    Ann F. Rhoads, Ph.D. Senior Botanist, Pennsylvania Flora Project    cc: Frank Felbaum, Wild Resources Conservation Fund   

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