Stipa borysthenica Klokov ex Prokudin, 1951

Nobis, Marcin, Nobis, Agnieszka, Klichowska, Ewelina, Nowak, Arkadiusz, Nowak, Sylwia & Gudkova, Polina D., 2016, Stipa dickorei sp. nov. (Poaceae), three new records and a checklist of feather grasses of China, Phytotaxa 267 (1), pp. 29-39 : 34

Stipa borysthenica Klokov ex Prokudin

Type:― UKRAINE. Lugov forest country house, Tyasmin, Aleks, u., 18 May 1911, I. Paczoski (lectotype selected by Tzvelev, LE!)

Stipa boryshtenica is a widely distributed taxon ranging from central Europe to central Asia ( Tzvelev 1976, Martinovský 1980, Conert 1998, Gonzalo et al. 2013) and is here reported for the first time from China. Having the ventral line of hairs at the anthecium at the distance of (1.6–)4.2–6.1(–7.7) mm not reaching the base of awn and almost glabrous to slightly scabrous vegetative leaves, S. boryshtenica is close to S. pennata , however they differ by having callus base narrowly cuneate vs. pyriform, callus (3.4–)3.7–4.2(–4.6) vs. (2.4–)2.8–3.25(–3.75) mm long, upper cauline leaves (22–)36–62(–125) vs. (4–)10–22(–40) mm long respectively ( Klichowska & Nobis 2016). These two taxa also differ in the type of habitat in which they grow. Stipa borysthenica grows generally on sandy grasslands and S. pennata grows on steppe grasslands.

Specimens studied:— CHINA. Xinjiang: Fuyun county, Tuergen, elev. 1470 m., 6 June 1959, Xinjiang Exped. 10381 (PE-707071!, PE-707072!).