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Vernonia karaguensis Oliv. [family COMPOSITAE]

Date Updated: 19 August 2007

Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, Part 1, page 1, (2000) Author: H. J. Beentje, M.Sc., Ph.D., F.L.S.
Names
Vernonia karaguensis Oliv. [family COMPOSITAE], in Trans. Linn. Soc., London 29: 91 (1873) & in F.T.A. 3: 280 (1877); Maquet in Fl. Rwanda 3: 558 (1985); C. Jeffrey in K.B. 43: 221 (1988); G.V. Pope in F.Z. 6: 103 (1992); U.K.W.F. ed. 2: 203, t. 82 (1994); Kalanda & Lisowski in Fragm. Flor. Geobot. 40 (2): 659 (1995). Type: Tanzania, Bukoba District, Karagwe, Grant (K!, holo.) Vernonia cistifolia O. Hoffm. [family COMPOSITAE], in P.O.A. C: 404 (1895); T.T.C.L.: 163 (1949); Brenan in Mem. N.Y. Bot. Gard. 8: 459 (1954); C.D. Adams in F.W.T.A. ed. 2, 2: 282 (1963); Wild in Kirkia 11: 50 (1978). Syntypes: Tanzania, Lushoto/Pare District, Usambara, Holst 626 (B†, Syn.) & 657 (B†, Syn.); Malawi, Buchanan 588 (K!, Syn.) Vernonia cistifolia O. Hoffm. var. rosea [family COMPOSITAE], in P.O.A. C: 404 (1895); S. Moore in J.L.S. 40: 105 (1911); T.T.C.L.: 163 (1949), nom. invalid. Syntypes: as for V. cistifolia Vernonia cistifolia O. Hoffm. var. pallens [family COMPOSITAE], in P.O.A. C: 404 (1895); T.T.C.L.: 163 (1949). Type: Tanzania, Lushoto/Pare District, Usambara, Holst 668 (B†, holo.) ?Vernonia johannis O. Hoffm. [family ],  in P.O.A. C: 405 (1895). Type: Tanzania, Pare District, Ugweno [Ugueno], Ngovi, Volkens 467 (B†, holo.) Vernonia elliotii S. Moore [family COMPOSITAE], in J.L.S. 35: 315 (1902). Type: Kenya, Mau, Scott Elliot 6920 (BM!, holo., K!, iso.) Vernonia bothrioclinoides C. H. Wright [family COMPOSITAE], in K.B. 1906: 108 (1906). Syntypes: Malawi, Namasi, Cameron 40 (K!, Syn.) & Mt Chiradzulu, Whyte (K!, Syn.) Vernonia pilgeriana Muschl. [family COMPOSITAE], in E.J. 46: 78 (1911). Type: Tanzania, Arusha District, Engare Olmotoni [Ngare Olmotony], Uhlig 208 (B†, holo.) Vernonia campanea S. Moore [family COMPOSITAE], in J.B. 54: 251 (1916); F.P.U.: 183, fig. 124 (1962). Type: Uganda, Mengo District, 160 km NW of Kampala, Brown in Dummer 2652 (BM!, holo., K!, iso.) Vernonia melanocrophylla Cufod. [family COMPOSITAE], in Nuov. Giorn. Bot. Ital. n. s. 50: 102 (1943). Syntypes: Ethiopia, El Banno & El Dire, Corradi 1805, 1806, 2035, 2036, 2057, 2058, 2117 (all FT!, Syn.) Vernonia cistifolia (C. H. Wright) Brenan var. bothrioclinoides [family COMPOSITAE], in Mem. N.Y. Bot. Gard. 8: 460 (1954) Orbivestus karaguensis (Oliv.) H. Rob. [family COMPOSITAE], in Proc. Biol. Soc. Wash. 112: 231 (1999)
Information
 Perennial herb or weak subshrub with several stiffly erect, tough stems arising from the small woody rootstock, unbranched except in the upper part; stems often tinged with purple, densely crispate-pubescent with ± asymmetrically T-shaped hairs. Leaves sessile or shortly petiolate, ovate or elliptic, 2.5-15 cm long, 0.8-7 cm wide, base cuneate or rounded, sometimes attenuate, margins obscurely to evidently crenate, apiculate-denticulate or serrate, apex acute, green and (sparsely) scabrid above, pale greyish or whitish green and shortly crispate-pubescent to densely tomentose beneath; petiole up to 1.6 cm long. Capitula usually numerous in dense and copious compound terminal and upper axillary scorpioid cymes; involucre ovoid to obconic-cylindrical, 4-8 mm long; phyllaries 3-5-seriate, especially the inner purple-tinged especially on margins and towards apex, ovate, inner often elliptic, acute to obtuse, ± apiculate, sometimes recurving, the inner 3-7.3 mm long, pubescent and glandular. Corolla purple or mauve, 4.5-9 mm long, lobes 1.2-3 mm long, glabrous or with a few long fine subapical hairs, glandular. Achenes 2-3 mm long, 4-5-ribbed, shortly sparsely ascending-pubescent to glabrous, glandular; outer pappus of narrow oblong-lanceolate laciniate scales, 0.2-0.8 mm long, inner pappus white, 3.5-6 mm long.
Range
Distr.U 1-4; K 1-6; T 1-8
Altitude range
500-2850 m
Distribution
KENYA Northern Frontier District Kulal, June 1960, Oteke 110!KENYA Kisumu-Londiani District Songhor, Aug. 1975, Kokwaro 3718!KENYA Masai District Chyulu Hills, June 1981, Gilbert 6248!TANZANIA Masai District Ngorongoro old boma, July 1962, Newbould 6112!TANZANIA Kigoma District Ujamba, July 1958, Mahinde 238!TANZANIA Iringa District Mudasi, 28 km from Njombe, July 1982, Abdallah 1204!UGANDA Karamoja District Timu Forest, Nov. 1939, A.S. Thomas 3219!UGANDA Kigezi District 5 km NE of Nyarushanje, Dec. 1968, Lye & Lester 1085!UGANDA Masaka District Kansambia, May 1972, Lye 6927!
Distribution (external)
; Nigeria Congo (Kinshasa) Rwanda Sudan Ethiopia Angola Zambia Malawi Mozambique Zimbabwe
Notes
The flowers have been described as aromatic by some, as not aromatic by others. Irwin states the species is late-flowering in Kenya (K 3) and therefore conspicuous. This species is said to be dominant in grassland in N Kigezi (U 2).
Vernonia karaguensis Oliv. [family COMPOSITAE]
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