中国伞形科植物在线

致力于伞形科分类学研究的网络化和分类学知识的传播和利用!

Acronema gracile/细梗丝瓣芹

General description: 

Plants 18–40 cm. Root tuberous, ovoid, 5–7 mm across. Stem ribbed, slightly branched. Basal leaves petiolate, petioles 7–13 cm, sheaths small; blade triangular, 4–5.5 × 5–6 cm, 1–2-ternate-pinnate; pinnae broad-triangular, 2–4 × 1.5–3.5 cm, 3-lobed or entire, petiolules 1–1.8 cm; ultimate segments obovate, base cuneate, cuspidate-serrate distally, scabrous along nerves adaxially. Umbels 2.2–3.4 cm across; peduncles slender; bracts and bracteoles absent; rays 5–6, 1–1.5 cm, very unequal; um-bellules 6–7 mm across, 4–7-flowered; pedicels 1.6–3.5 mm, slender, unequal. Calyx teeth obsolete. Petals purple-red, broad-ovate, 3–3.5 × ca. 1 mm; apex linear, 2–2.5 mm, glandular-pubescent. Mature fruit unknown. Fl. Jul.

Diagnostic description: 

This poorly known taxon is recorded only from a few collections.

Distribution: 

Xizang.

Habitat: 

Forested ravines; 3300–3800 m.

周日, 2014-08-31 15:24 -- admin
http://www.gravatar.com/avatar/7e71ae62cd16441203203930186e887a.jpg?d=http%3A//apiaceae.onlineflora.cn/sites/all/modules/contrib/gravatar/avatar.png&s=100&r=G
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith