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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Psychrogeton

2. Psychrogeton nigromontanus (Boissier & Buhse) Grierson, Notes Roy. Bot. Gard. Edinburgh. 27: 144. 1967.

黑山寒蓬 hei shan han peng

Erigeron nigromontanus Boissier & Buhse, Nouv. Mém. Soc. Imp. Naturalistes Moscou 12: 114. 1860; Brachyactis iliensis Ruprecht; Conyza iliensis Trautvetter; E. kazachstanicus Sergievskaya.

Herbs, annual or biennial, 1-55 cm tall or more; taproots vertical or ascending. Stems erect, branched above, densely leafy, grayish, densely villous-pilose, short-stipitate glandular. Leaves densely villous-pilose, short-stipitate glandular, basal withered at anthesis, petiolate, petiole base clasping, blade spatulate to oblong; lower cauline long petiolate, blade obovate to oblanceolate, ca. 8 × 2.5 cm, base attenuate, margin entire or remotely serrulate, apex acute; mid cauline blade oblanceolate to lanceolate, ca. 3 × 0.75 cm, margin entire or remotely 1- or 2-serrulate per side; upper on branches reduced. Capitula 0.7-1 cm wide, usually numerous, in corymbose-paniculiform synflorescences; peduncles thin, 0.5-1 cm. Involucre campanulate; phyllaries subequal, 2- or 3-seriate, green along midvein, lanceolate to linear-lanceolate, ca. 4 × 0.5 mm, abaxially densely villous-pilose, short-stipitate glandular, margin scarious, apex acuminate. Female florets numerous, filiform, 1.75-2 mm, hairy, lamina ± obliquely cut; disk florets 6-12, ca. 3.5 mm, funnelform, lobes lanceolate, apex hairy. Achenes tan, oblanceoloid, ca. 2 × 0.5 mm, strigose. Pappus 1-seriate, sometimes also short outer series present, very short, of 20-24 barbellate bristles, 3-4.5 mm. Fl. Jul-Sep.

Subalpine meadows; 1200-1500 m. N Xinjiang [Afghanistan, Kazakhstan, Kyrgyzstan; SW Asia (Caucasus, Iran, Iraq, Turkey)].


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