Crepis carbonaria

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Crepis carbonaria

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Description

Herb, perennial, (1)-8-35-(50) cm high. Caudex 0.5-1.0 cm, 0.5-1.5 cm wide, simple or weakly branched. Flowering stems 1-5, procumbent, erect or ascending, tinged purple towards base, tomentose, glabrescent below, hispid or pubescent above, striate, slender; branches remote. Rosette leaves many, narrowly obovate or narrowly ovate, (2.0)-5.0-15.0-(16.0) cm long, 0.3-2.5 cm wide, entire or rarely runcinate, denticulate, obtuse, acute, acuminate or mucronate, petiole-like attenuate with a sometimes winged petiole, hispid, glabrescent or glabrous. Cauline leaves few or sometimes absent, linear or narrowly ovate, (1.0)-4.0 cm long, 0.5-2.0 cm wide, pinnatifid, rarely runcinate or entire, dentate, acuminate or the lower ones obtuse or acute, petiole-like attenuate, glabrescent, apically reduced to scales. Peduncle (0.3)-1.0-10.0-(20.0) cm long, tomentose, covered with bracts. Heads with many flowers. Involucre at flowering cylindric-campanulate, (7.0)-10.0-14.0 mm long, at flowering 4.0-5.0-(8.0) mm in diameter, dark green, hispidulous or pilose, tomentose at base; outer involucral bracts linear-ovate, 0.5-0.8 mm wide, obtuse, light brownish, pubescent or glabrous; inner involucral bracts narrowly ovate or oblong, obtuse, tomentose, pubescent or hispid, margin sometimes minutely ciliate at apex. Receptacle areolate, naked. Corolla ligulate, 5.5-6.0-(15.0) mm long, yellow; tube 1.5-4.0 mm long, glabrous or sparsely pubescent; ligule 0.6-1.5 mm wide. Anthertube 1.8-2.8-(4.0) mm long; apical appendages acute or acuminate, c. 0.5 mm long. Style 1.5-2.0 mm long; branches 0.5-1.0-(1.8) mm long, yellow. Achenes fusiform in outline, somewhat compressed, 4.0-7.0 mm long, 0.8 mm wide, finely muricate at apex, brown or brownish yellow, with 10-13-(20) ribs, attenuate into an ill-defined beak. Pappus pale yellow or yellowish white, 4.0-6.0 mm long, persistent or sometimes caducous, flexible, barbellate.

Based on: Babcock, E. B. 1947: The genus Crepis 2. – Univ. Calif. Publ. Bot. 22 (as Crepis carbonaria, Crepis ellenbeckii, Crepis glandulosissima and Crepis scaposa); Jeffrey, C. & Beentje, H. J. 2000: Cichorieae . – Pp. 63-108 in: Beentje, H. J. & Smith, S. A. L. (ed.), Flora of Tropical East Africa. Compositae (Part 1). – Kew; Tadesse, M. 2004: 18. Crepis - Pp 46-51 in: Hedberg, I., Friis, I., Edwards, S. Flora of Ethiopia and Eritrea. – Uppsala.

Distribution

Africa: EthiopianativeA,B,C,D; KenyanativeA,B,E,F; RwandanativeA,F,G,H; SudannativeI; TanzanianativeA,B; UgandanativeA,B; ZairenativeA,B,D,F,H

Bibliography

A. Beentje H. J. & Jeffrey C. - Cichorieae in Polhill R.M. (ed.), Flora of Tropical East Africa. Compositae 1. 2000
B. Jeffrey C., Notes on Compositae: 1. The Cichorieae In East Tropical Africa in Kew Bull. 18 (3): 427-552. 1966
C. Puff C. & Nemomissa S., Plants of the Simen in Scripta Bot. Belg. 37. 2005
D. Tadesse M. - 16. Scolymus - 29. Tragopogon in Hedberg I. & Edwards S., Flora of Ethiopia and Eritrea. 2004
E. Agnew A. D. Q. & Agnew S., Upland Kenya wild flowers. A flora of the ferns and herbaceous flowering plants of Upland Kenya, ed. 2. 1994
F. Lawalrée A., Dethier D. & Gilissen E., Flore d'Afrique Centrale (Zaire-Rwanda-Burundi). Spermatophytes, Compositae I. 1986 (as Crepis scaposa subsp. taraxaciformis (R. E. Fr.) Babc.)
G. Lawalrée A. - 56. Tolpis - 61. Crepis in Troupin G., Flore du Rwanda. Spermatophytes 3. 1985 (as Crepis scaposa subsp. taraxaciformis (R. E. Fr.) Babc.)
H. Robyns W., Flore des Spermatophytes du Parc National Albert. Sympétales 2. 1947 (as Crepis scaposa var. taraxaciformis R. E. Fr.)
I. Oliver D. & Hiern W. P. - Compositae in Oliver D., Flora of Tropical Africa 3. 1877