Author Institution: The Ohio State Universit

Taft, Clarence E.

The Ohio Journal of Science

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SOME ALGAE, INCLUDING NEW SPECIES, FROMNEW MEXICO1CLARENCE E. TAFT,The Ohio State UniversityThe writer recently had the opportunity to examine several collections of algaefrom Valle Grande, in the vicinity of Los Alamos, New Mexico. The sampleswere collected by Dr. R. A. Popham, Department of Botany, The Ohio StateUniversity, during the spring of 1944 and the early summer of 1945 from an eleva-tion approximating 9,000 feet.The algal flora of New Mexico is generally unknown. As indicated by thesesamples, it would be well worth the time of some algologist to carefully surveythis area by extending the time and scope of the collections. Although no fruitingOedogoniaceae and only one member of the Zygnemataceae in fruit was discovered,members of both groups were numerous in vegetative condition. The paucity offruiting material in either of these groups in alpine or subalpine habitats isnotorious. Yet extensive collecting might result in some remarkable records.The large proportion of desmids in the collections is merely characteristic of alpineor subalpine regions and is probably indicative of a rich flora. No attempt hasbeen made to identify the diatoms, which although numerous, do not predominatein the collections examined.The writer is indebted to Dr. Popham for the samples and expresses his apprecia-tion for the time and effort expended in their acquisition. He also wishes to thankDr. G. W. Prescott of Michigan State College, Lansing, Michigan, for the use ofhis Iconograph of the Desmidiaceae as well as for his helpful comments and criti-cisms in species determination.SPECIES LISTCHLOROPHYTAVolvocaceaePandorina morum Bory.Volvox aureus Ehr.TetrasporaceaeApiocystis brauniana Nag.Gloeocystis ampla Kutz.Sphaerocystis schroeteri Chodat.Tetraspora lubrica (Roth) Ag.UlotrichaceaeUlothrix zonata (Weber & Mohr) Kutz.ChaetophoraceaeMicrothamnion strictissimum Raben.ZygnemataceaeSpirogyra tenuissima (Hass.) Kuetz.DesmidiaceaeClosterium kuetzingWBr6h.Closterium moniliferum (Bory) Ehr.Closterium pritchardianum Archer.Closterium striolatum var. subtruncatum (W. & W.) Krieger.Closterium tumidum Johnson.Micrasterias americana (Ehr.) Ralfs.Euastrum bidentatum Nag.xPaper from the Department of Botany, The Ohio State University, No. 492.8586 CLARENCE E. TAFT Vol. XLVIIEuastrum denticulatum (Kirchn.) Gay.Euastrum notatum Taft sp. nov. Fig. 2.Cells small, longer than broad, constriction shallow and open; semicells quadrate-pyramidate, lateral margins concave; polar lobe nearly quadrate, apex slightly retuse andsurrounded by four inconspicuous marginal lobes; basal angles broadly rounded; verticalview depressed hexagonal, all angles obtuse to broadly rounded and smooth, apical mar-ginal lobes circularly arranged within the hexagon. Wall smooth and colorless. Length37-43/*, width 27-29/*, isth. 17-19/*; width of polar lobe 16-17/*. Valle Grande, New Mexico.This species should be compared with Euastrum Berlini Boldt (Boldt 1888) from whichit differs in the broader isthmus, more broadly rounded basal angles, and the presence ofthe apical, marginal lobes.Cosmarium botrytis var. mediolaeve W. West.Cosmarium costatum Nordst.Cosmarium cucurbitinum (Biss.) Lutkm.Cosmarium ellipsoideum var. minor Racib.FIG. 1. Cosmarium vallegrande Taft, sp. nov.FIG. 2. Euastrum notatum Taft, sp. nov.FIG. 3. Staurastrum trihedrale var. glabra Taft.FIG. 4. Phacus crenulata var. annulata Taft, var. nov.Cosmarium holmiense Lund.The dimensions of the only individual seen were greater than the usual size range.Length 64/J, width 38/*, isth. 19/*.Cosmarium margaritatum var. minor (Boldt.) W. & G. S. West.Cosmarium meneghinii fa. reinschii Istv.Cosmarium speciosum var. rostafinskii fa. americana W. & G. S. West.Cosmarium speciosum var. simplex Nordst.Cosmarium subarctoum (Lager.) Racib.Cosmarium subcrenatum Hantzsch.Numerous zygospores were present. The dimensions were: 30-42xt diam. includingprocesses, 27-32/* minus processes.No. 2 ALGAE FROM NEW MEXICO 87Cosmarium vallegrande Taft sp. nov. Fig. 1.Cells about one-fifth longer than broad, deeply constricted, sinus linear, closed; semi-cells ovate-pyramidate, angles rounded, margins crenate; cell wall granulate, granulesarranged in concentric series, smaller at the center and becoming larger near the margin,marginal series of broad, flattened verrucae; vertical view broadly elliptical with slightlyflattened ends and having a row of verrucae on either side of the long axis, the interveningspace crenulate.Valle Grande, New Mexico.Staurastrum polytrichum Perty.Staurastrum punctulatum Bre"b.Staurastrum punctulatum var. subproductum W. & G. S. West.This variety is identical in shape but slightly larger than St. punctulatum Bre"b. forma?Boldt (Boldt, 1888). Length 46-48/t, width 40-42,*, isth. 16-17/*.Staurastrum spongiosum Bre"b.Staurastrum trihedrale var. glabra Taft. Fig. 3.Wolle described St. trihedrale as being punctate-granulate. The Oklahoma specimens(Taft, 1930) as well as those from New Mexico have a perfectly smooth wall. WhileWolle's figure leaves much to be desired it is still the writer's opinion that these indi-viduals should remain as a variety of his species.HydrodictyaceaePediastrum boryanum var. longicorne Racib.OocystaceaeAnkistrodesmus falcatus (Corda) Ralfs.Nephrocytium limneticum G. M. Smith.Oocystis lacustris Chodat.VaucheriaceaeVaucheria pachyderma Walz.Vaucheria sessils (Vauch.) D. C.Xanthophyceae CHRYSOPHYTATribonema bombycinum (Ag.) Derbes & Sol.OphiocytaceaeOphiocytium arbusculum (A. Br.) Raben.Ophiocytium parvulum (Perty) A. Br.Euglenaceae EUGLENOPHYTAPhacus crenulata var. annulata Taft var. nov. Fig. 4.Cell ovoid-pyriform, posteriorly tapering into a sharp-pointed, slightly bent caudus,anterior end broadly rounded and bilobed; flagellum about as long as the cell; margins ofthe cell crenulate, with one sharp notch; periplast longitudinally striate, lines slightlyundulate; paramylon body a single annular disc. Length 31-32/1, width 14-16ju.Valle Grande, New Mexico.The variety is distinguished from P. crenulata Prescott (1944) by having an annulardisc paramylon body, a marginal notch, and a bent caudus.Trachelomonas granulosa Playf.Trachelomonas intermedia Dang.Trachelomonas varians Defl.Trachelomonas volvocina Ehr.~ , CYANOPHYTAChrococcaceaeChroococcus turgidus Nag.LITERATURE CITEDBoldt, Robert. 1888. Desmidieer Fran Gronland. Bihang Till K. Svenska Vet.-Akad. Hand-lingar. Band 13. afd. III. No. 5. pp. 1-48.Prescott, G. W. 1944. New species and varieties of Wisconsin algae. Farlowia, 1(3): 347-385.Taft, C. E. 1931. Desmids of Oklahoma. Oklahoma Biol. Sur. Bull. 3(3): 275-321.

Some Algae, Including New Species, from New Mexico

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Some Algae, Including New Species, from New Mexico

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