Syncalathium

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Description

Herbs, annual or perennial, acaulescent and rosulate, or, exceptionally, caulescent with thick and hollow, densely leafy stem, sometimes from thin, vertical, subterranean shoot with scaly leaves. Rosette shoot inflated at apex to a flat, convex, hollow receptacle, carrying usually some to numerous, densely crowded sessile or subsessile capitula, often with a reduced, linear subtending leaf. Capitula with 3 or 5 florets. Involucre narrowly cylindric. Phyllaries in 1 row; outer phyllaries absent; inner phyllaries 3 or 5, ± lanceolate, subequal in length, connate in basal part, hardened at maturity. Receptacle naked. Florets yellow or pale to medium purplish. Achene obconical, compressed, with 5 ribs, apex truncate. Pappus of grayish white, with scabrid bristles, usually caducous.

from: Shih C. & Kilian N. in Wu Z. Y. & al. (ed.), Flora of China 20–21: 339. 2011, Beijing & St Louis.

Distribution

Asia-Temperate: China North-Central (Gansunative); China South-Central (Sichuannative); Qinghai (Qinghainative); Tibet (Tibetnative)

Common names

Chinese (China): 合头菊属 he tou ju shuA

Chromosome numbers

Diploids, x = 8.B

Bibliography

A. Wu & al., Flora of China 20-21. 2011
B. Watanabe K., Index to chromosome numbers in Asteraceae.