Lactuca calophylla

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Lactuca calophylla

http://media.bgbm.org/erez/erez?src=EditWP6/photos/Lactuca_calophylla_A_08.jpg

Description

Perennial herb, scapose, with solitary or twin flowering stem(s) 20-75 cm high; roots somewhat woody; root-crown with old laciniate leaf bases, otherwise glabrous; stem sparsely to densely setose on the ribs, the setae purple, leaves in a rosette, sessile, broadly elliptic, 5.5-22.5 cm long, 2-12 cm wide, base cuneate to attenuate, margins sinuate-dentate, apex obtuse or retuse with a mucro, pale green and glabrous above, with purple veins and sparsely setose beneath; cauline leaves absent or 1-2, similar to the rosette ones. Capitula many, in narrow panicles; involucre cylindrical, 8-12 mm long; phyllaries 3-seriate, green, ovate to lanceolate, 2-12 mm long, glabrous or the very apex minutely hairy. Corolla yellow, tube cylindric, 2.5-3.5 mm long, ligule 7-12 mm long, 2.5-4 mm wide. Achenes fusiform, 4.2-5.8 mm long, 3-ribbed on each side, sparsely puberulous, not or hardly beaked; pappus 4-7 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: Malawi (MalawinativeA,B,C,D); Tanzania (TanzanianativeA,B,C,D); Zambia (ZambianativeA,B,C,D)

Credits

Blittersdorff R. von 2010: Images (5 added)
Blittersdorff R. von 2011: Images (8 added)
Blittersdorff R. von 2012: Images (3 added).

Bibliography

A. Beentje H. J. & Jeffrey C. - Cichorieae in Polhill R.M. (ed.), Flora of Tropical East Africa. Compositae 1. 2000
B. Burrows J. E. & Willis C. K., Plants of Nyika Plateau. An account of the vegetation of the Nyika National Parks of Malawi and Zambia in SABONET Report 31. 2005
C. Jeffrey C., Notes on Compositae: 1. The Cichorieae In East Tropical Africa in Kew Bull. 18 (3). 1966
D. Pope G. V., Flora Zambesiaca 6(1). 1992