矮小丝瓣芹 ai xiao si ban qin

Sinocarum minus M. F. Watson, Edinburgh J. Bot. 53: 140. 1996.

Plants 3–5 cm. Rhizome tuberous ovoid, 3–5 mm across. Stem solitary, thinly ribbed. Lower stem leaves petiolate, petioles 2–5.5 cm, sheaths short; blade broad-triangular, 4–7 × 5–8 mm, 2-ternate-pinnate; pinnae short-petiolulate, second pinnules broad-ovate, 3-lobed; ultimate segments, 1.2–1.5 × 0.7–1 mm, entire or middle ones 2–3-toothed, teeth 1–2 mm. Upper stem leaves none. Umbels 0.5–1 cm across; peduncles, 2.5–3 cm, slender; bracts 1–3, linear, 2–3 mm; rays 3–7, 1.5–5 mm; bracteoles 2–4, ca. 1 mm, shorter than pedicels; pedicels 3–5, ca. 2 mm. Calyx teeth obsolete. Petals white, ovate, ca. 1 mm; apex short-acute, not linear. Young fruit, oblong-ellipsoid, ca. 1 mm (mature fruit not known). Fl. Jun–Jul.

Mountain slopes; 3000–4600 m. S Xizang, NW Yunnan [Bhutan].

This species was misidentified in FRPS (55(2): 119–121. 1985) as Acronema wolffianum Fedde ex H. Wolff (Sinocarum wolffianum (Fedde ex H. Wolff) P. K. Mukherjee & Constance, 1991, not (Fedde ex H. Wolff) R. H. Shan & F. T. Pu, 1993), which is endemic to Bhutan and Sikkim.