Taxonomy of Poa jubata and a new section of the genus (Poaceae)

Cabi, Evren; Soreng, Robert J.; Gillespie, Lynn J.

doi:10.3906/bot-1611-28

Cited by 11 publications

(30 citation statements)

References 12 publications

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“…Pandemos: P.trivialis L.). Poa major clades have been described elsewhere (Gillespie et al 2007, 2008, 2009, Soreng et al 2010, 2017b, Cabi et al 2017); here we focus on the position of Eremopoa .…”

Section: Resultsmentioning

confidence: 99%

“…We call this set the E clade (Soreng et al 2010, Cabi et al 2017) and accept it as Poasubg.Pseudopoa. In its recent usage, this subgenus was initially considered to include only Eremopoa (Zhu et al 2006, Gillespie et al 2007); here it is expanded to include Lindbergella and P.speluncarum .…”

Section: Discussionmentioning

confidence: 99%

“…Trees were viewed in FigTree v1.4.0 (Rambaut 2006+). Clade designations follow Soreng et al (2010) with modifications as in Cabi et al (2017) and Soreng et al (2017b), wherein well-supported major clades are assigned letters.…”

Section: Methodsmentioning

confidence: 99%

“…We subsequently sequenced two additional plastid regions ( matK and rpoB-trnC ) and added data for Eremopoapersica (Cabi et al 2017, as Poapersica ). A DNA analysis of ITS sequence data by Hoffmann et al (2013) showed Lindbergellasintenisii was also nested within Poa near Eremopoa .…”

Section: Introductionmentioning

confidence: 99%

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Phylogeny and taxonomic synopsis of Poa subgenus Pseudopoa (including Eremopoa and Lindbergella) (Poaceae, Poeae, Poinae)

Gillespie¹,

Soreng²,

Cabi³

et al. 2018

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Eremopoa is a small genus of annual grasses distributed from Egypt to western China. Phylogenetic analyses of plastid and nuclear ribosomal DNA show that Eremopoa species, together with the monotypic genus Lindbergella and a single species of Poa (P.speluncarum), are nested within the genus Poa, in a clade that we accept as Poasubg.Pseudopoa. Here we accept seven species, four subspecies and four varieties in Poasubg.Pseudopoa. Five new combinations are made: Poaattalica, P.diaphora var. alpina, P.diaphora var. songarica, P.nephelochloides and P.persicasubsp.multiradiata; P.millii is proposed as a replacement name for E.capillaris; and Poa sections Lindbergella and Speluncarae are proposed. We provide a diagnosis for Poasubg.Pseudopoa, synonymy for and a key to the taxa. Eight lectotypes are designated: Eragrostisbarbeyi Post, Eremopoanephelochloides Roshev., Glyceriataurica Steud., Nephelochloatripolitana Boiss. & Blanche, Poacilicensis Hance, Poaparadoxa Kar. & Kir., Poapersicavar.alpina Boiss and Poapersicasubsp.cypria Sam. Eremopoamedica is re-identified as a species of Puccinellia.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phylogeny and taxonomic synopsis of Poa subgenus Pseudopoa (including Eremopoa and Lindbergella) (Poaceae, Poeae, Poinae)

Gillespie¹,

Soreng²,

Cabi³

et al. 2018

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“…Our phylogenetic studies, based on plastid and nuclear ribosomal DNA, demonstrate that sect. Secundae is reticulate in origin (Gillespie et al 2008, Cabi et al 2017, Soreng et al 2017). Secundae species exhibit several atavistic traits (Soreng 1991a, Soreng et al 2015) that are otherwise odd in Poa , including; a crown of hairs around the base of the callus, upper culm leaf sheaths margins often free more than 80–90% of their length and lemmas that are often somewhat rounded on the back.…”

Section: Introductionmentioning

confidence: 99%

Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA

Soreng¹,

Gillespie²

2018

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Poasecunda J. Presl. s.l. is a morphologically highly variable bunchgrass that is a valuable forage species in western North America. There has been much controversy as to whether multiple taxa should be recognised and at what rank in this taxonomically challenging apomictic complex. Here we propose an infraspecific classification for Poasecunda of six varieties within two subspecies, juncifolia and secunda. New combinations are P.secunda vars. ampla, gracillima, juncifolia, nevadensis and scabrella. Conflicting plastid and nrDNA phylogenies show that P.sect.Secundae is of ancient hybrid origin. Based on this and its distinct morphology, the section is raised to the rank of subgenus. A key is presented for P.secunda infraspecies and closely related non-arctic species. Suppl. materials are provided of chromosome counts for Secundae taxa and D.D. Keck specimen annotations of taxa here included in P.secunda.

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Morphological and phylogenetic evidence for subtribe Cinninae and two new subtribes, Hookerochloinae and Dupontiinae (Poaceae tribe PoeaePPAMclade)

Gillespie

Soreng

Bull

et al. 2022

TAXON

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Molecular phylogenetic analyses and morphological characters of the grass supersubtribe Poodinae (tribe Poeae, PPAM clade) were evaluated with the goal of determining the relationships of single-flowered spikelet genera recently classified in subtribe Cinninae and the sister genus of the New Zealand endemic genus Simplicia. A total of 136 samples representing 40 genera and 105 species were analyzed for three plastid (matK, trnC-rpoB, trnT-trnL-trnF) and two nuclear ribosomal DNA markers (ITS, ETS). The Cinninae subtribe, including Aniselytron, Cinna, Cinnastrum, Cyathopus, and Simplicia, was recovered as monophyletic with weak support only in the combined analysis with known/putative hybrid taxa removed. Cinna (excluding Cinnastrum) resolved as paraphyletic due to the position of the morphologically distinctive Cyathopus. Cinninae are characterized by flat leaf blades, open panicles, small, strongly compressed, single-flowered spikelets, with a rachilla extension, and lemmas that are awnless or with a short subterminal awn. The genus Cinnastrum is resurrected for Cinna poiformis and differs from Cinna in its broader glumes and subterete caryopsis with solid endosperm. Simplicia is likely most closely related to the southern and eastern Asian genus Aniselytron, with which it shares unequal and short lower glumes and spikelet disarticulation above the glumes, in contrast to the other three genera of the subtribe. The HSAQN clade, which has mainly multi-flowered spikelets and is sister to Cinninae, is named subtribe Hookerochloinae, including Arctagrostis, Hookerochloa, Nicoraepoa, Saxipoa, and Sylvipoa. The DAD clade, which is known to be of reticulate origin postulated here as involving Cinninae, is named subtribe Dupontiinae, and includes Arctohyalopoa, Arctophila, Dupontia, and Dupontiopsis. These three subtribes, together with subtribes Alopecurinae, Beckmanniinae, and Ventenatinae (along with Brizochloinae not tested here), make up the well-supported Alopecurinae superclade within supersubtribe Poodinae.

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Taxonomy of Poa jubata and a new section of the genus (Poaceae)

Cited by 11 publications

References 12 publications

Phylogeny and taxonomic synopsis of Poa subgenus Pseudopoa (including Eremopoa and Lindbergella) (Poaceae, Poeae, Poinae)

Phylogeny and taxonomic synopsis of Poa subgenus Pseudopoa (including Eremopoa and Lindbergella) (Poaceae, Poeae, Poinae)

Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA

Morphological and phylogenetic evidence for subtribe Cinninae and two new subtribes, Hookerochloinae and Dupontiinae (Poaceae tribe PoeaePPAMclade)

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