Heteroderis pusilla

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Description

Annual. Stem 3-40 cm high, 1-3 mm thick at base, with more or less dense long setaceous hairs and not so dense arachnoid pubescence all-over, less often subglabrous. Leaves o basal rosette obovate-oblong, sinuate-toothed or runcinately pinnatipartite, (1.7)3.0-8.0 cm long, (0.5)1.0-2.0 cm wide, narrowed toward the base into petiole, glabrous, often with setaceous hairs beneath along midrib, spiny along margin; cauline, leaves 3-8 cm long, 1.7-2.5 cm wide, with rather large incised auricles at the base, glabrous, less often sparsely arachnoid-hairy pubescent, with more or less dense setaceous hairs beneath along midrib; lower and middle leaves similar to basal; upper ones smaller, undivided, lanceolate or linear. Capitula 12-14 mm long, 4-5 mm wide at fruiting, clustered in small number, less often solitary, terminal on stem and its lateral branches. Outer involucral bracts broadly ovate, (1.5)2.5-4.0 mm long, about 2 mm wide, acuminate or attenuated, glabrous on the outer side, sometimes with setaceous hairs along midrib; inner bracts 8-12 mm long, without arachnoid-hairy pubescent on the outer side, keeled along midrib, with two rows of dense long setaceous hairs or setaceous hairs over entire surface of inner bracts except the narrow scarious margin. Peripheral achenes 3.5-4.5 mm long, densely papillose over entire length. Body of central achenes 2.5-3.0 mm long; beak 4-5 mm long; pappus 3.0-3.5 mm long.

from: Bobrov, E. G. and Tzvelev, N. N. (ed.) 2000: Flora of the USSR XXIX, Compositae, Tribe Cichorieae. – Enfield.

Distribution

Africa: Egypt (EgyptnativeA,B) Asia-Temperate: Afghanistan (AfghanistannativeC,D,E,F,G,H,I,J,K); Iran (IrannativeF,G,H,I,K,L,M); Iraq (IraqnativeE,F,G,L); Kazakhstan (KazakhstannativeN); Kirgizistan (KirgizistannativeO); Saudi Arabia (Saudi ArabianativeC,E,L,P); Tadzhikistan (TadzhikistannativeQ); Turkmenistan (TurkmenistannativeF,G,R); Uzbekistan (UzbekistannativeS) Asia-Tropical: Pakistan (PakistannativeF,G,H,I,J,K,T)

Common names

(Middle East): MichtrakouF

Bibliography

A. Boulos, L., Flora of Egypt 3. 2002
B. Täckholm, V., Students' flora of Egypt, ed. 2. 1974 (as Crepis aegyptiaca)
C. Boulos L. & Hind D. J. N. - Compositae in Boulos L. (ed.), Flora of Egypt 3. 134-317
D. Breckle S.-W. & al., Vascular plants of Afghanistan, an augmented checklist. 2013 (as Heteroderis pusilla)
E. Chaudhary S. A. - 73. Hedypnois - 87. Crepis in Chaudhary S. A. (ed.), Flora of the Kingdom of Saudi Arabia 2(3). 2000
F. Rechinger K. - Heteroderis in Leonard J., Contribution a l'etude de la Flore et de la Vegetation des deserts d'Iran. 1984
G. Rechinger K. - Heteroderis in Leonard J., Contribution a l'etude de la Flore et de la Vegetation des deserts d'Iran. 1984 (as Heteroderis pusilla var. leucocephala (Bunge) Rech. f.)
H. Rechinger K. H., 33. Willemetia - 38. Spiroseris in Fl. Iran. 122. 1977
I. Rechinger K. H., 33. Willemetia - 38. Spiroseris in Fl. Iran. 122. 1977 (as Heteroderis pusilla var. chaetocephala (Bunge) Bornm.)
J. Rechinger K. H., 33. Willemetia - 38. Spiroseris in Fl. Iran. 122. 1977 (as Heteroderis pusilla var. gymnocephala Rech. f.)
K. Rechinger K. H., 33. Willemetia - 38. Spiroseris in Fl. Iran. 122. 1977 (as Heteroderis pusilla var. leucocephala (Bunge) Rech. f.)
L. Heller D. & Heyn C. C., Conspectus Florae Orientalis 8. 1993
M. Safavi S. R. & al. - 77. Asteraceae tribe Cichorieae in Assadi M. & al., Flora of Iran. 2013
N. Pavlov N. V., Flora Kazachstana 9. 1966 (as Heteroderis leucocephala (Bunge) Leonova)
O. Lazkov G. A. & Sultanova B. A., Kadastr flory Kyrgyzstana: sosudistye rasteniya / Checklist of vascular plants of Kyrgyzstan. – Norrlinia 24. 2011
P. Mandaville J. P., Flora of Eastern Saudi Arabia. 1990
Q. Akademija Nauk Tadžikskoj SSR, Botaničeskij Institut, Flora Tadžikskoj SSR 10. 1991 (as Heteroderis leucocephala (Bunge) Leonova)
R. Schischkin B. K. & Nikitin V. V., Flora Turkmenia VII. 1960
S. Kovalevsk. - in Vvedensky, Fl. Uzbekistan. 6. 1962
T. Ghafoor A. & al., Flora of Pakistan 222. Asteraceae (IV) Cichorieae. 2017 (as Heteroderis pusilla)