Heteracia

Primary tabs

Heteracia

Distribution

Asia-Temperate: Afghanistan native; Iran native; Kazakhstan native; Kirgizistan native; Tadzhikistan native; Transcaucasus (Armenia native, Nakhichevan native); Turkmenistan native; Uzbekistan native; Xinjiang native Asia-Tropical: Pakistan native Europe: East European Russia native; Krym native: reported in error

Chromosome numbers

Diploids, x = 4.A

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): 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