Poa bactriana subsp. bactriana var. vivipara Tzvelev, Novosti Sist. Vyssh. Rast.
Year: 2026
Type: article
Abstract: 2.1. 2Poa bactriana subsp. bactriana var. viviparaTzvelev, Novosti Sist. Vyssh. Rast. 10: 96. 1973. Type. [Uzbekistan] • Buchara, Denau, Bibi-tschaka, 22 May 1906, R. Roshevitz, “ Edit. Horti. Bot. Petropol., no. 28 ” (lectotype, here designated: US [04127774]; isolectotype: LE {n. v.}. Diagnosis. Like Poa bactriana subsp. bactriana but with spikelets bulbiferous. Distribution and ecology. Afghanistan, India, Iran, Kazakhstan, Kyrgyz Republic, Pakistan, Tajikistan, Turkmenistan, and Uzbekistan. Loose sandy to clayey, sometimes stony slopes, including Juniper forests, middle to upper mountains. Conservation status. None. Discussion. Tzvelev (1973) treated this as a variety within Poa bactriana but later treated it as a variety within P. bactriana subsp. bactriana (Tzvelev 1976). Although Tzvelev noted two n °. 28 “ isotypes ” at LE (1976, p. 450), no single sheet was designated as a holotype (Tzvelev 1973) or lectotype. The US lectotype, a duplicate distributed as Poa bulbosa var. vivipara, has a printed label matching the protologue. The culms in the US lectotype are up to 55 cm tall, with flag-leaf blades ca. 5 cm long, panicles loosely many flowered, some with many normal spikelets with glabrous lemmas, agreeing with subsp. bactriana. Roshevitz 834 [US 04073182], also from Bibi-tschaka, as “ v. vivipara ” (in Roshevitz hand), is a probable isolectotype but lacks a date and the number 28. Representative specimens. Afghanistan. (H. S. Gentry 12761 US). Kyrgyzstan. (Kalinina s. n. US [det.?]). Pakistan. (Chitral, Jambatai, Hariss 16820 US). Uzbekistan. (Roshevitz 834 US).
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7225828357
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