Poa bactriana subsp. bactriana var. bactriana subsp. bactriana var. bactriana

2.1. 1Poa bactriana subsp. bactriana var. bactriana Diagnosis. Relative to the other Poa bactriana subspecies, the plants are generally taller. Culms 20–60 cm tall. Leaves 3–4 on culms; leaf blades 1–3.5 mm wide, usually flat, flag-leaves (3 –) 4–15 cm long. Panicles, 5–18 cm long, fairly loose, with many spikelets; branches densely scabrous along the length. Lemmas 2.7–3.2 mm long. Anthers 1.2–1.8 mm long. Distribution and ecology. Afghanistan, Iran?, Pakistan, Tajikistan, Turkmenistan, and Uzbekistan. Loose sandy to clayey, sometimes stony, soils, on middle to upper mountain slopes. Conservation status. None. Discussion. Tzvelev (1976) noted that this subspecies might have resulted from hybridization between P. bactriana subsp. glabriflora and P. bulbosa, and that it has a bulbiferous variety. Tzvelev (1976) keyed subspp. glabriflora, drobovii, and zaprjagajevii apart as smaller plants, mostly 10–40 cm tall, with leaf blades up to 2 mm wide, lemmas 2–2.7 mm long, anthers 0.6–1.2 (– 1.5) mm long. In addition, the flag-leaf blades in these other subspecies are mostly <5 cm long, panicles 1.5–10 cm long and contracted (open but sparse in subsp. zaprjagajevii), branches smooth or scabrous. A Furse 6413 [K 006945539] specimen from Afghanistan was annotated as subsp. bactriana and as staminate by RJS in 2017, which is odd for the subgenus but may only represent protandry. RJS verified the syntypes cited below from images!, as var. bactriana. Representative specimens. Afghanistan. (Semple 390 US; Furse 6413 K; Hedge & Wendelbo W 3168 E; Koelz 12014 US). Pakistan. Citral (Bowes Lynn 722 BM, E, W [image!]). Tajikistan. (syntypes, LE 01223887, LE 01223888, LE 01223890, LE 01223892 (p. p. right- hand plant) [images!]. Turkmenistan. (syntypes, LE 01223889, LE 01223893 [images!]). Uzbekistan. (syntypes, LE 01223894, LE 01223895 [images!]).

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Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-11
DOI
https://doi.org/10.5281/zenodo.24142998
Primary Topic
Plant Taxonomy and Phylogenetics
Type
article
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article

Poa bactriana subsp. bactriana var. bactriana subsp. bactriana var. bactriana

Evren Cabi, Robert John SORENG, Lynn Judith GILLESPIE
Zenodo (CERN European Organization for Nuclear Research)
Plant Taxonomy and Phylogenetics
article

Poa bactriana subsp. bactriana var. bactriana subsp. bactriana var. bactriana

Evren Cabi, Robert John SORENG, Lynn Judith GILLESPIE
article en

Abstract

2.1. 1Poa bactriana subsp. bactriana var. bactriana Diagnosis. Relative to the other Poa bactriana subspecies, the plants are generally taller. Culms 20–60 cm tall. Leaves 3–4 on culms; leaf blades 1–3.5 mm wide, usually flat, flag-leaves (3 –) 4–15 cm long. Panicles, 5–18 cm long, fairly loose, with many spikelets; branches densely scabrous along the length. Lemmas 2.7–3.2 mm long. Anthers 1.2–1.8 mm long. Distribution and ecology. Afghanistan, Iran?, Pakistan, Tajikistan, Turkmenistan, and Uzbekistan. Loose sandy to clayey, sometimes stony, soils, on middle to upper mountain slopes. Conservation status. None. Discussion. Tzvelev (1976) noted that this subspecies might have resulted from hybridization between P. bactriana subsp. glabriflora and P. bulbosa, and that it has a bulbiferous variety. Tzvelev (1976) keyed subspp. glabriflora, drobovii, and zaprjagajevii apart as smaller plants, mostly 10–40 cm tall, with leaf blades up to 2 mm wide, lemmas 2–2.7 mm long, anthers 0.6–1.2 (– 1.5) mm long. In addition, the flag-leaf blades in these other subspecies are mostly <5 cm long, panicles 1.5–10 cm long and contracted (open but sparse in subsp. zaprjagajevii), branches smooth or scabrous. A Furse 6413 [K 006945539] specimen from Afghanistan was annotated as subsp. bactriana and as staminate by RJS in 2017, which is odd for the subgenus but may only represent protandry. RJS verified the syntypes cited below from images!, as var. bactriana. Representative specimens. Afghanistan. (Semple 390 US; Furse 6413 K; Hedge & Wendelbo W 3168 E; Koelz 12014 US). Pakistan. Citral (Bowes Lynn 722 BM, E, W [image!]). Tajikistan. (syntypes, LE 01223887, LE 01223888, LE 01223890, LE 01223892 (p. p. right- hand plant) [images!]. Turkmenistan. (syntypes, LE 01223889, LE 01223893 [images!]). Uzbekistan. (syntypes, LE 01223894, LE 01223895 [images!]).

Zenodo (CERN European Organization for Nuclear Research)
Smithsonian Institution (US), Tekirdağ Namık Kemal University (TR), National Museum of Natural History (US), Canadian Museum of Nature (CA)
Plant Taxonomy and Phylogenetics
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