Lactuca ugandensis

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Lactuca ugandensis

http://media.bgbm.org/erez/erez?src=EditWP6/photos/Lactuca_ugandensis_A_01.jpg

Description

Perennial herb, the (? annual) stem 0.7-1.5 m high, bearing both leaves and capitula, sparsely setose. Leaves 8-9, sessile, elliptic to lanceolate in outline, pinnatilobed, 6.5-30 cm long, 1.5-7 cm wide, base narrowed (in radical leaves) to half-amplexicaul, the lobes obtuse, their margins minutely sinuate-dentate, apex apiculate, setose on the midrib and veins beneath. Capitula many in lax panicles; involucre cylindrical, 9-14 mm long; phyllaries 4-seriate, ovate to lanceolate, 2.5-14 mm long, glabrous except for the very apex. Florets 9-12 per capitulum; corolla bluish white (not seen). Achenes reddish brown, narrowly ellipsoid, 6.7-7.3 mm long (including beak), 3-ribbed on each side, beak +/- 2 mm long, glabrous or nearly so; pappus white, 5-7 mm long.

from: 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.

Distribution

Africa: Burundi (BurundinativeA,B); Cameroon (CameroonnativeA,C); Kenya (KenyanativeB); Uganda (UgandanativeA,B,C); Zaire (ZairenativeA,B,C)

Common names

Rundi (Central Africa): KaruraB

Credits

Blittersdorff R. von 2011: Images (10 added).

Bibliography

A. Beentje H. J. & Jeffrey C. - Cichorieae in Polhill R.M. (ed.), Flora of Tropical East Africa. Compositae 1. 2000
B. Lawalrée A., Dethier D. & Gilissen E., Flore d'Afrique Centrale (Zaire-Rwanda-Burundi). Spermatophytes, Compositae I. 1986
C. Jeffrey C., Notes on Compositae: 1. The Cichorieae In East Tropical Africa in Kew Bull. 18 (3). 1966