Abstract
Cremanthodium weixiense (Asteraceae, Senecioneae), a new species from northwestern Yunnan, China, is described and illustrated. The new species is referred to C. ser. Calcicola based on its palmately veined leaves, discoid capitula and leaflike, herbaceous phyllaries. However, it is unique in this series in having dissected leaves. It is somewhat similar to C. pinnatisectum in C. ser. Campanulata in the dissected leaves and the discoid capitula, but differs by the suborbicular (versus subreniform) basal leaves with deeply cordate (versus subtruncate) bases and very narrow (versus obviously divergent) sinuses, the presence (versus absence) of a conspicuously sheathed petiolar base of stem leaves, the broadly cylindrical (versus campanulate) involucres and the leaflike, herbaceous (versus petaloid, membranous) phyllaries.
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