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97. Dicercoclados C. Jeffrey & Y. L. Chen, Kew Bull. 39: 213. 1984.

歧笔菊属 qi bi ju shu

Authors: Yilin Chen, Bertil Nordenstam & Charles Jeffrey

Herbs, perennial, rhizomatous. Rhizomes woody, with fibrous, tomentose roots. Stems erect, leafy. Leaves alternate, stem leaves petiolate, strongly 3-veined from above base. Capitula homogamous, discoid, axillary to upper leaves, solitary or paired; pedunculate; peduncles slender, divaricate, minutely multibracteolate in upper part. Involucres cylindric, minutely calyculate. Receptacle subconvex, areolate; phyllaries 10 or 11, linear or linear-lanceolate, subleathery, with scarious margins. Florets 15 or 16, all discoid, bisexual, fertile; corollas yellow, actinomorphic; tubular with funnelform limb, 5-lobed, lobes oblong-lanceolate. Anthers linear, exserted from corolla, basally long caudate, appendages lanceolate; endothecial cell wall thickenings strictly polar. Antheropodia long, narrow, without enlarged basal cells, as broad as filaments, shorter than anther tails. Ovary cylindric, glabrous. Style branches with confluent stigmatic areas, abaxially and apically long papillose; papillae divided at apex into 2 brushlike lobes. Pappus of numerous capillary-like hairs, many seriate, barbellate.

● One species: China.

In habit and the shape of the capitula, the single species of Dicercoclados is very similar to some species of Synotis, such as S. sinica; however, the strongly 3-veined leaves, cylindric antheropodia, and completely polarized endothecial tissue cell wall thickenings place it in the subtribe Tussilagininae and ally it firmly to Parasenecio. The apically bipenicillate style branches and its habit readily distinguish it from the latter.

Lower Taxon


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