Leaf Micromorphology Aids Taxonomic Delineation within the Hypervariable Genus Metrosideros (Myrtaceae) on O\u27ahu

Variation in leaf micromorphology can aid delimitation of taxonomically difficult groups. The woody genus Metrosideros (Myrtaceae) dominates Hawai\u27i\u27s native forests and comprises striking, predominantly infraspecific, macromorphological variation, including many forms unrecognized in current taxonomic treatments. On taxonomically rich O\u27ahu, 10 taxa (varieties or unnamed morphotypes of M. polymorpha and other species) occur in a predictable sequence with overlapping ranges from low to high elevation along the numerous leeward ridges of the Ko\u27olau Range. We used scanning electron and light microscopy to examine mature, nonsenescing sun leaves from each of these 10 taxa. Parametric and nonparametric tests were used to compare stomatal complex (SC) traits and those of a newly described secretory structure (SS) across taxa. Correlations among traits and discriminant analyses were also done. Density and length of SCs were inversely related overall, and both measures varied significantly across taxa. Although abaxial SSs were consistently present only in the two highest-elevation glabrous taxa, adaxial SSs were present in all 10 taxa. Length and density of adaxial SSs and density of abaxial SSs varied across taxa, and densities of both SCs and SSs were greatest at high elevation. Combined, the SC and SS traits differentiated 100% of four glabrous varieties and two of three pubescent varieties of M. polymorpha. Variation in leaf micromorphology, including presence and density of a newly described SS, aids delimitation of closely related Hawaiian Metrosideros taxa and may refilect differential local adaptation across a heterogeneous landscape

The Vehicle, Spring 1974

Table of Contents PhotoJim Painterpage 1 Six Poems of the LandRay Schmuddepage 5 At Last to Find FreedomJann Briesacherpage 7 The Last IrisMarjorie Thoelepage 9 (Untitled)Melinda E. Recordpage 10 MenJan Schroederpage 10 ImpressionsJudy Bardpage 11 ScaredAnita Surpage 11 Loved and LostJan Schroederpage 12 Dripped-Over WaxAnita Surpage 13 The Crowded RoomWilliam E. Uteschpage 14 A River in IllinoisJames Jonespage 14 Sneeze SeasonDarlene A. Moorepage 14 ChangesMark Chianakaspage 15 PhotoJim Painterpage 16 Wedding VowsJann Briesacherpage 17 PhotoJim Painterpage 18 PhotoJim Painterpage 19 PhotoJim Painterpage 20 PhotoJim Painterpage 21 PhotoJim Painterpage 22 PhotoLarry Smyserpage 23 From Outside ColoradoRay Schmuddepage 24 Dairy QueenGayle Gleichmanpage 26 With Sunstreaks in our HairNancy Broom Brownpage 33 PhotoJim Painterpage 34 Water\u27s EdgeMarjorie Thoelepage 35 My 665th Illusion of SanityGordon Glessnerpage 36 Is it my turn to do the laundry again??? Jann Briesacherpage 38 TV Teachingbobbdoddpage 39 GuidanceWendy Diane Wielandpage 40 PhotoJim Painterpage 41 RaindropsJane Ann Beerspage 42 WaitingJan Schroederpage 42 To JonJudy Bardpage 43 One Autumn Day in 1971E. Christmanpage 43 More Surely Than Picture AlbumsMarjorie Thoelepage 44 WingspanningNancy Broom Brownpage 45 ReligionMelinda E. Recordpage 45 Rosalie StevensonMark Holleypage 46 PhotoJim Painterpage 47 WhiteShirley A. Rardinpage 48 The Beginning of a Perfect DayShirley A. Rardinpage 49 PhotoMichael Chenpage 50 Rosethorn Wall of June 17bobbdoddpage 51 ManJan Schroederpage 51 HaikuJudy Bardpage 51 You know it leaves me emptyJames Osbornepage 52 For JesseJames Osbornepage 52 EndingsMark Chianakaspage 53 ConfusionGary L. Owenspage 53 PhotoMichael Chenpage 54 PoemsJann Briesacherpage 54 Journey of just oneNancy Broom Brownpage 55 Blackbirds in IllinoisJames Jonespage 56 PoemsJann Briesacherpage 56 PhotoMichael Chenpage 57 I am a poemDarlene A. Moorepage 57 A Glimpse of ParadiseJann Briesacherpage 57 PhotoJim Painterpage 58 PoemSheila Marie Foorpage 59 In my windowBarbara S. Meyerpage 59 Section 4., Draft 3bobbdoddpage 60 PhotoJim Painterpage 61 PoemJann Briesacherpage 61 PhotoGary Deanpage 62 I amWilliam E. Uteschpage 62 To a tank-car in IllinoisJames Jonespage 63 PoemJane Ann Beerspage 63 PoemsJann Briesacherpage 63 Editor\u27s Pagepage 64https://thekeep.eiu.edu/vehicle/1031/thumbnail.jp

The Vehicle, Spring 1974

Table of Contents PhotoJim Painterpage 1 Six Poems of the LandRay Schmuddepage 5 At Last to Find FreedomJann Briesacherpage 7 The Last IrisMarjorie Thoelepage 9 (Untitled)Melinda E. Recordpage 10 MenJan Schroederpage 10 ImpressionsJudy Bardpage 11 ScaredAnita Surpage 11 Loved and LostJan Schroederpage 12 Dripped-Over WaxAnita Surpage 13 The Crowded RoomWilliam E. Uteschpage 14 A River in IllinoisJames Jonespage 14 Sneeze SeasonDarlene A. Moorepage 14 ChangesMark Chianakaspage 15 PhotoJim Painterpage 16 Wedding VowsJann Briesacherpage 17 PhotoJim Painterpage 18 PhotoJim Painterpage 19 PhotoJim Painterpage 20 PhotoJim Painterpage 21 PhotoJim Painterpage 22 PhotoLarry Smyserpage 23 From Outside ColoradoRay Schmuddepage 24 Dairy QueenGayle Gleichmanpage 26 With Sunstreaks in our HairNancy Broom Brownpage 33 PhotoJim Painterpage 34 Water\u27s EdgeMarjorie Thoelepage 35 My 665th Illusion of SanityGordon Glessnerpage 36 Is it my turn to do the laundry again??? Jann Briesacherpage 38 TV Teachingbobbdoddpage 39 GuidanceWendy Diane Wielandpage 40 PhotoJim Painterpage 41 RaindropsJane Ann Beerspage 42 WaitingJan Schroederpage 42 To JonJudy Bardpage 43 One Autumn Day in 1971E. Christmanpage 43 More Surely Than Picture AlbumsMarjorie Thoelepage 44 WingspanningNancy Broom Brownpage 45 ReligionMelinda E. Recordpage 45 Rosalie StevensonMark Holleypage 46 PhotoJim Painterpage 47 WhiteShirley A. Rardinpage 48 The Beginning of a Perfect DayShirley A. Rardinpage 49 PhotoMichael Chenpage 50 Rosethorn Wall of June 17bobbdoddpage 51 ManJan Schroederpage 51 HaikuJudy Bardpage 51 You know it leaves me emptyJames Osbornepage 52 For JesseJames Osbornepage 52 EndingsMark Chianakaspage 53 ConfusionGary L. Owenspage 53 PhotoMichael Chenpage 54 PoemsJann Briesacherpage 54 Journey of just oneNancy Broom Brownpage 55 Blackbirds in IllinoisJames Jonespage 56 PoemsJann Briesacherpage 56 PhotoMichael Chenpage 57 I am a poemDarlene A. Moorepage 57 A Glimpse of ParadiseJann Briesacherpage 57 PhotoJim Painterpage 58 PoemSheila Marie Foorpage 59 In my windowBarbara S. Meyerpage 59 Section 4., Draft 3bobbdoddpage 60 PhotoJim Painterpage 61 PoemJann Briesacherpage 61 PhotoGary Deanpage 62 I amWilliam E. Uteschpage 62 To a tank-car in IllinoisJames Jonespage 63 PoemJane Ann Beerspage 63 PoemsJann Briesacherpage 63 Editor\u27s Pagepage 64https://thekeep.eiu.edu/vehicle/1031/thumbnail.jp

Constraints on the χ_(c1) versus χ_(c2) polarizations in proton-proton collisions at √s = 8 TeV

The polarizations of promptly produced χ_(c1) and χ_(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at √s=8  TeV. The χ_c states are reconstructed via their radiative decays χ_c → J/ψγ, with the photons being measured through conversions to e⁺e⁻, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χ_(c2) to χ_(c1) yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ → μ⁺μ⁻ decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum