Heteracia

Primary tabs

Heteracia

Description

Herbs, annual. Stem leaves sagittately clasping. Capitula solitary or few, terminal on or in axils of branches, with numerous florets. Involucre hemispheric in fruit. Phyllaries in 2 rows; outer phyllaries 2–5; inner phyllaries lanceolate. Receptacle naked. Florets yellow. Achene dimorphic; outer achenes with short stout beak; inner achenes with a long slender beak. Pappus absent in outer achenes and mostly present in inner achenes, white, of scabrid bristles.

from: Shih C. & Kilian N. in Wu Z. Y. & al. (ed.), Flora of China 20–21: 269–270. 2011, Beijing & St Louis.

Chromosome numbers

Diploids, x = 4.A

Distribution

Asia-Temperate: Afghanistannative; Irannative; Kazakhstannative; Kirgizistannative; Tadzhikistannative; Transcaucasus (Armenianative, Nakhichevannative); Turkmenistannative; Uzbekistannative; Xinjiangnative Asia-Tropical: Pakistannative Europe: East European Russianative; Krymnative: reported in error

Common names

Armenian (Armenia): ՀետերացիաB,1; Chinese (China): 异喙菊属 yi hui ju shuC; Russian (Armenia): ГетерацияB,2
1. unassessed, 2. recommended

Bibliography

A. Watanabe K., Index to chromosome numbers in Asteraceae.
B. Tahtadžjan, A. L., Flora Armenii 9. 1995
C. Wu & al., Flora of China 20-21. 2011