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19. Dipsacaceae

川续断科 chuan xu duan ke

Authors: Deyuan Hong, Liming Ma & Fred R. Barrie

Herbs, mostly perennial, less frequently annual or biennial, very rarely subshrubs. Leaves opposite, or sometimes whorled, simple, entire or toothed, pinnatifid to pinnatisect. Inflorescences of compact cymes forming a terminal, involucral head, or diffuse and paniculiform (Triplostegia). Flowers bisexual, nearly always subtended by 1 or 2 cupular, apically toothed or subentire involucels (epicalyx); receptacle hairy or naked. Calyx usually small, cupular, or 4- or 5-segmented, or with up to 10 teeth or setae. Corolla sympetalous, 5(or 4)-lobed, ± irregular. Stamens 4, rarely 2 or 3, inserted at summit of corolla tube; anthers 4-sporangiate, opening by longitudinal slits. Gynoecium of 2 carpels, but 1 carpel obsolete; ovary inferior, 1-loculed; ovule solitary, apical, pendulous; style slender; stigma entire or 2-fid. Fruit an achene, enclosed by involucel and crowned by persistent calyx.

Ten genera and ca. 250 species: Africa, Asia, Europe; four genera and 17 species (four endemic) in China.

He Shi-yuan, Hsing Chi-hua & Yin Tsu-tang. 1986. Dipsacaceae. In: Lu An-ming & Chen Shu-kun, eds., Fl. Reipubl. Popularis Sin. 73(1): 44-84.


1 Inflorescence paniculiform.   1 Triplostegia
+ Inflorescence a compact head   (2)
       
2 (1) Plants spiny; flowers uniform; involucels usually without an evident crown.   4 Dipsacus
+ Plants without spines; flowers usually dimorphic, corolla of marginal flowers larger and 2-lipped; involucels usually with a crown   (3)
       
3 (2) Leaves usually all basal; calyx segments 8 or more, plumose or setose, shedding.   2 Pterocephalus
+ Leaves mostly cauline; calyx segments 5, setose, persistent.   3 Scabiosa

Lower Taxa


 

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