Corispermum dutreuilii Iljin var. dutreuilii

Sukhorukov, Alexander P., Liu, Pei-Liang & Kushunina, Maria, 2019, Taxonomic revision of Chenopodiaceae in Himalaya and Tibet, PhytoKeys 116, pp. 1-141 : 86

Corispermum dutreuilii Iljin var. dutreuilii

Note.

Fruit warty but without stellate hairs (Fig. 33E ), thin (0.25-0.50 mm) in cross-section.

Taxonomic note.

The type variety can probably be synonymised with C. hilariae ( Iljin 1936) due to (i) glabrous stems and the same general habit and (ii) triangular fruit tip and presence of warts in some fruits (variable character). The subulate fruit apex, reported as a peculiar characteristic for C. dutreuilii , seems to vary in many specimens. If the merger of both species is to be confirmed, C. hilariae is the priority name. Here, we maintain the specific rank of C. dutreuilii , dividing it into two varieties (also, see comments on C. dutreuilii var. montanum ).

Distribution.

See Fig. 35 .

Specimens examined.

CHINA: Xizang: Ngari Prefecture: Gêrzê (Gaize) County, 4250 m a.s.l., Aug 1972, Li 072 (PE00540329); Rutog (Ritu) County, Ni Yagezu, 4500 m a.s.l., 5 Sep 1976, Qinghai-Tibet Team 76-9164 (PE00540476); Rutog (Ritu) County, NW Lake Bangong (Pangong Tso), Ni Yagezu, 4500 m a.s.l., 5 Sep 1976, Qinghai-Tibet Team Vegetation Group 13559 (PE);

INDIA: Jammu & Kashmir: Ladakh, Shauyk & Rupshu valleys, Oct 1847, T.T. Thomson s.n. (K); Ladakh, 6 km W of Pangong Tso [Lake], 4250 m a.s.l., 13 Aug 1997, H. Hartmann 6083 (MSB137929); Ladakh, Rupshu Region, Tso Moriri, between Korzok & Peldo, 4650 m a.s.l., 11 Aug 2001, L. Klimeš 1327 (PRA); Ladakh, Pangong Region, Pangong Lake to Chagar Tso, 4300 m a.s.l., 10 Sep 2002, L. Klimeš 2713 & 2714 (PRA); Ladakh, Indus valley, Stot (E) [Stod River valley], Pilung La, 4860 m a.s.l., 7 Sep 2003, L. Klimeš 3465 & 3470 (PRA); Ladakh, Rupshu Region, Samad Rakchan, Thukje Gompa, 4860-5000 m a.s.l., 7 Sep 2005, L. Klimeš 6248 (PRA); Ladakh, Rupshu Region, Samad Rakchan, Thukje vill., 4560 m a.s.l., 9 Sep 2005, L. Klimeš 6272 (PRA).

Figures

Figure 33. SEM micrographs of Corispermum fruits: A C. falcatum B C. nanum C C. pamiricum D C. dutreuilii var. montanum E C. dutreuilii var. dutreuilii F C. pseudofalcatum. Magnification: 30 x.

Figure 35. Distribution map of Corispermum dutreuilii var. dutreuilii (circles), C. pseudofalcatum (star) and C. lhasaense (triangle).