中国伞形科植物在线

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Acronema alpinum/高山丝瓣芹

General description: 

Plants 4–10 cm. Root tuberous, ovoid, 7–9 × 4–5 mm, thick. Stem purplish, branched. Basal leaves petiolate, petioles 1–1.5 cm, sheaths ovate-oblong; blade ovate or broad-ovate, 0.8–1.1 × 1.1–1.3 cm, 2-ternate; leaflets sessile, ovate to obo-vate, ca. 2 × 1.5 mm, apex 3-toothed. Umbels ca. 2 cm across; peduncles ribbed, 1–2 cm; bracts and bracteoles absent; rays 5–7, 1–2 cm, unequal, 4-angled; umbellules 0.5–0.6 mm across, 6–13-flowered; pedicels 3–5 mm. Calyx teeth obsolete. Petals color unknown, ovate, ca. 1.8 × 0.7 mm; apex linear. Stylo-podium depressed, purple-black. Fruit ovoid, ca. 1.8 × 1.5 mm, base cordate; vittae unknown. Fl. Jul, fr. Aug.

Diagnostic description: 

This incompletely known taxon is recorded only from a few col-lections.

Distribution: 

 Xizang.

Habitat: 

Rock crevices on alpine slopes; 4700–4800 m.

周日, 2014-08-31 14:51 -- 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