Lactuca glauciifolia

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Lactuca glauciifolia

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Description

Annual. Stems slender, (2)7-15(20) cm high, divaricately or dichotomously branched. Basal leaves usually rosulate, obovate or broadly spatulate, narrowed into broad petiole, irregularly toothed, covered beneath with rather long, crisped or flexuous, light-colored hairs; sometimes basal leaves pinnatisect, coarsely toothed; cauline leaves strongly reduced, often
almost scaly, amplexicaul. Capitula, on the average, with 10-15 florets,cylindrical to oblong- or conical-cylindrical, with fruits about 18 mm long, mature capitula slightly narrowed near middle, usually subsessile or on short peduncles, less often on long peduncles, in lax dichotomous-paniculate inflorescence. Involucral bracts few, usually three- rowed; outer
bracts with crisped hairs on dorsal surface (like leaves), inner ones narrowbordered; involucral- bracts more or less squarrose after fruiting. Corolla yellow(?), blue on drying. Achenes about 3 mm long and up to 1 mm wide, dark brownish-yellow, narrow-obovoid or oblong-ellipsoid, flat, with very short transversely hairy stripes (under a hand lens!), and prominent
rib in center, rugose-toothed upward along lateral ribs (under a hand lens!);achenes apically attenuate into filiform white beak two to three times as long as achene and terminating in pappus; pappus hairs thin, white, soft, somewhat barbed (under a hand lens!), almost as long as achene or slightly shorter.

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

Distribution

Asia-Temperate: Afghanistan (AfghanistannativeA,B,C); Iran (IrannativeC,D,E); Kirgizistan (KirgizistannativeF); Tadzhikistan (TadzhikistannativeG); Turkmenistan (TurkmenistannativeB,C,H); Uzbekistan (UzbekistannativeI) Asia-Tropical: Pakistan (PakistannativeB,C,J)

Bibliography

A. Breckle S.-W. & al., Vascular plants of Afghanistan, an augmented checklist. 2013 (as Lactuca glauciifolia)
B. Rechinger K. - 10. Crepis - 11. Echinops in Panda S. & Das A. P., Flora of Sambalpur (Orissa). 2004
C. Rechinger K. H., 20. Prenanthes - 29. Lapsana in Fl. Iran. 122. 1977
D. Heller D. & Heyn C. C., Conspectus Florae Orientalis 8. 1993
E. Safavi S. R. & al. - 77. Asteraceae tribe Cichorieae in Assadi M. & al., Flora of Iran. 2013
F. Lazkov G. A. & Sultanova B. A., Kadastr flory Kyrgyzstana: sosudistye rasteniya / Checklist of vascular plants of Kyrgyzstan. – Norrlinia 24. 2011
G. Akademija Nauk Tadžikskoj SSR, Botaničeskij Institut, Flora Tadžikskoj SSR 10. 1991
H. Schischkin B. K. & Nikitin V. V., Flora Turkmenia VII. 1960
I. Kovalevsk. - in Vvedensky, Fl. Uzbekistan. 6. 1962
J. Ghafoor A. & al., Flora of Pakistan 222. Asteraceae (IV) Cichorieae. 2017