中国伞形科植物在线

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Acronema nervosum/羽轴丝瓣芹

General description: 

Plants 10–25(–40) cm. Root tuberous, ovoid, ca. 5 mm across. Stem solitary, slender, little-branched. Basal leaves peti-olate, petioles ca. 5 cm, slender, sheaths small; blade broad-tri-angular, 2.2–3 × 1.5–2.5 cm, 2-ternate-pinnate; pinnae petiolu-late; ultimate segments obovate to linear-lanceolate, 5–8 × 2–3 mm, entire or 3-toothed, margins and adaxial veins minutely pubescent. Umbels 1.5–3 cm across; peduncles short; bracts and bracteoles absent (bracts occasionally 1); rays 3–6, 1.5–2.7 cm, slender; umbellules 5–12 mm, 3–9-flowered; pedicels 2–9 mm, unequal, spreading and elongating in fruit. Calyx teeth obsolete. Petals white, yellowish-white, or purple, ovate-lanceolate, 2–3 × ca. 0.5 mm; apex linear, ca. 1.5 mm. Stylopodiumi depressed. Fruit ovoid, ca. 1.5 × 1.5 (mature fruit unknown). Fl. Aug–Sep, fr. Sep–Oct.

Diagnostic description: 

This species has reputed medicinal value (in Xizang).

Distribution: 

 SW Sichuan, S Xizang [Bhutan, NE India, Nepal, Sikkim].

Habitat: 

Alpine forests; 4100–4500 m.

周日, 2014-08-31 14:54 -- admin
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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith