Tragopogon ruthenicus

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Tragopogon ruthenicus

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Description

Biennial. Root robust, long, vertical; root collar densely covered with fibrous remnants of old leaves. Plants 30-80(115) cm high, flocculose-tomentose, especially above, on young branches and in leaf axils. Stems erect or slightly flexuous, usually robust, thick, highly sulcate, usually branched above, densely leafy from base, fistular below. Lower basal leaves usually expanded at base, 20-40 cm long, 4-12 mm wide, often folded, withering at seed maturation, acute; middle leaves semiamplexicaul, 9-15(18) cm long, expanded at base, 8-25 mm wide, gradually narrowed upward and glabrous in this part, conduplicate along keel, sometimes undulate; uppermost leaves reduced, 2-6 cm long, 6-10 mm wide at base, spatulate, narrowed above, with long, arcuate cusp, usually flocculose-tomentose. Peduncles not thickened below capitula, 1-2(3) mm thick. Capitula 3-30, at fruiting 20-40 mm long, 10-15 wide. Involucral bracts 7-12, at fruiting (18)25-35 mm long, 4-5 mm wide, more or less pubescent, especially very young ones, acuminate, glaucous from flocculose tomentum, slightly shorter as long as florets but shorter than achenes; florets light yellow. Peripheral achenes 1.5-3 cm long with pappus, without pappus 1.2-1.5(2) cm, somewhat thick, about 1-1.5 mm wide, shallow-sulcate, with 8-12 alternating smooth and finely tuberculate ribs, straight or somewhat curved, without beak, sometimes smooth in upper part, not spinulose; pappus 1.5-1.8 cm long, as long as or longer than achene, sometimes reddish with hairy annulus at base.

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

Distribution

Asia-Temperate: Kazakhstan (KazakhstannativeA) Europe: East European Russia (East European RussianativeB); South European Russia (South European RussianativeB)

Bibliography

A. Pavlov N. V., Flora Kazachstana 9. 1966
B. Fedorov, A. A., Flora evropejskoj časti SSSR 8 [Cvelev, N. N.]. 1989