Heteracia

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Distribution

Asia-Temperate: Afghanistan (Afghanistannative); Iran (Irannative); Kazakhstan (Kazakhstannative); Kirgizistan (Kirgizistannative); Tadzhikistan (Tadzhikistannative); Transcaucasus (Armenianative, Nakhichevannative); Turkmenistan (Turkmenistannative); Uzbekistan (Uzbekistannative); Xinjiang (Xinjiangnative) Asia-Tropical: Pakistan (Pakistannative) Europe: East European Russia (East European Russianative); Krym (Krymnative: reported in error)

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.

Common names

Armenian (Armenia): ՀետերացիաA,1; Chinese (China): 异喙菊属 yi hui ju shuB; Russian (Armenia): ГетерацияA,2
1. unassessed, 2. recommended

Chromosome numbers

Diploids, x = 4.C

Bibliography

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