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| Poa subgenus Pseudopoa sect. Pseudopoa in Gillespie, Soreng, Cabi & Amiri, 2018. |
Abstract
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 Poa subg. Pseudopoa. Here we accept seven species, four subspecies and four varieties in Poa subg. Pseudopoa. Five new combinations are made: Poa attalica, P. diaphora var. alpina, P. diaphora var. songarica, P. nephelochloides and P. persica subsp. 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 Poa subg. Pseudopoa, synonymy for and a key to the taxa. Eight lectotypes are designated: Eragrostis barbeyi Post, Eremopoa nephelochloides Roshev., Glyceria taurica Steud., Nephelochloa tripolitana Boiss. & Blanche, Poa cilicensis Hance, Poa paradoxa Kar. & Kir., Poa persica var. alpina Boiss and Poa persica subsp. cypria Sam. Eremopoa medica is re-identified as a species of Puccinellia.
Keywords: Annuals, classification, DNA, Eremopoa, grasses, Lindbergella, phylogeny, Poa, Poaceae, taxonomy
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| Poa subgenus Pseudopoa sect. Pseudopoa. A P. diaphora subsp. diaphora var. diaphora, Chu, Kyrgyz Republic (Soreng et al. 7537) B, C P. persica subsp. persica, Adiyaman, Turkey (Soreng et al. 9215) B habit C closeup of base of plant showing keeled leaf sheaths and caniculate blades D, E P. persica subsp. multiradiata, Mardin, Turkey (Soreng et al. 9240) D habit E spikelet showing glabrous lemmas. Photos by R.J. Soreng. |
Lynn J. Gillespie, Robert John Soreng, Evren Cabi and Neda Amiri. 2018. Phylogeny and Taxonomic Synopsis of Poa subgenus Pseudopoa (including Eremopoa and Lindbergella) (Poaceae, Poeae, Poinae). PhytoKeys. 111: 69-101. DOI: 10.3897/phytokeys.111.28081
