Compilation
Launaea rarifolia

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Name

Identification
Sonchus lanifer Dinter [family COMPOSITAE ] Verified by Kilian, N., Launaea rarifolia (Oliv. & Hiern) Boulos [family COMPOSITAE ] (stored under name); Verified by Not on sheet.,
Related name
  • Sonchus rarifolius
  • Sonchus pauciflorus
  • Launaea nana
  • Lactuca welwitschii
  • Launaea cabrae
  • Lactuca stenocephala
  • Launaea rarifolia
  • Sonchus macer
  • Lactuca cabrae
  • Lactuca verdickii
  • Brachyramphus nudicaulis
  • Lactuca nana
  • Sonchus lanifer

Flora

Entry for LAUNAEA rarifolia (Oliv. & Hiern) Boulos [family COMPOSITAE]
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
LAUNAEA rarifolia (Oliv. & Hiern) Boulos [family COMPOSITAE], in Bot. Notis. 115: 59 (1962); C. Jeffrey in K.B. 18: 464 (1966); Lawalrée, Dethier & Gilissen in F.A.C. Compositae: Cichorioideae: 16 (1986); G.V. Pope in F.Z. 6: 215, t. 40a (1992); N. Kilian in Englera 17: 114 (1997). Types: Malawi, Zomba and E end of Lake Shirwa, Meller (K!, syn.) & Nigeria, Nupe, Barter 1224 (K!, syn.)
Sonchus rarifolius Oliv. & Hiern [family COMPOSITAE], in F.T.A. 3: 460 (1877); R.E. Fr. in Acta Horti Berg. 8: 113 (1924); C.D. Adams in F.W.T.A. ed. 2, 2: 296 (1963)
Lactuca welwitschii Scott Elliot [family COMPOSITAE], in J.L.S. 29: 30 (1891). Types: Angola, Welwitsch 3662 (K!, syn.); Madagascar, Tolanaro [Fort Dauphin], Scott Elliot 2712 (BM!, K!, syn.)
Sonchus fischeri O. Hoffm. [family COMPOSITAE], in P.O.A. C: 421 (1895); R.E. Fr. in Acta Horti Berg. 8: 114 (1924). Type: Tanzania, Shinyanga District, Usule [Usula], Usiha, Fischer 358 (B†, holo.)
Lactuca verdickii De Wild. [family COMPOSITAE], in Ann. Mus. Congo, Bot., sér. 4, 1: 170, t. 28 (1903). Type: Congo (Kinshasa), Katanga, Lukafu, Verdick 139 (BR!, holo.)
Sonchus verdickii (De Wild.) R.E. Fr. [family COMPOSITAE], in Acta Horti Berg. 8: 113 (1924)
Sonchus welwitschii (Scott Elliot) S. Moore [family COMPOSITAE], in J.B. 65, suppl. 2: 67 (1927); F.P.S. 3: 51 (1956)
Launaea fischeri (O. Hoffm.) Boulos [family COMPOSITAE], in Bot. Notis. 115: 58 (1962)
Information
Perennial herb, with annual flowering shoots (10–)20–90 cm high from long fleshy taproot; root-crown(s) one to several, short-hairy to lanate; flowering stems one to several, greenish brown, slightly glaucous, often tinged with red, wiry, sparsely branched distally or densely branched, glabrous. Leaves 2–6, in basal rosettes, usually appearing after flowering, green, glaucous beneath with reddish midrib and margins, (ob-)lanceolate to obovate, linear when young, 3–25(–35) cm long, 0.5–7 cm wide, base cuneate into a winged pseudopetiole to 3 cm long, margins entire to dentate to pinnatilobed, apex obtuse or acute, glabrous. Capitula few to many, in dense or lax corymbs or panicles; stalks of individual capitula 0.5–4 cm long; involucre narrowly cylindric, 10–16 mm long, up to 19 mm in fruit; phyllaries erect, but eventually reflexed, green, often tinged red, the outer ovate and 1–6 mm long with scarious margins, becoming swollen at base, the inner linear-lanceolate, 8–19 mm long, acute or obtuse, with narrow scarious margins. Florets 6–25 per capitulum; corolla yellow, the ligule with faint pink stripe, the whole often becoming red or purple, tube narrowly cylindric, 6–10 mm long, pilose distally, ligule 3–8 mm long, 1–1.5 mm wide. Achenes red-brown, narrowly fusiform, 4–8 mm long, angular and finely ribbed, glabrous or minutely puberulous; pappus of white setae 7–10.5 mm long.
Range
DISTR. U 3, 4; K 3; T 4, 6–8 West Africa from Sierra Leone to Congo (Kinshasa), Rwanda, Sudan, Ethiopia, Angola, Zambia, Malawi, Mozambique, Zimbabwe, South Africa and Madagascar
Altitude range
250–1900 m
Distribution
KENYA Trans-Nzoia District Kitale, Mar. 1966, Tweedie 3257! & Milimani, Jan. 1970, Tweedie 3751!TANZANIA Mpanda District Mahali, Belengi, Aug. 1959, Harley 9133!TANZANIA Ulanga District 6 km N of Mlahi, Nov. 1976, Vollesen 4112!TANZANIA Njombe District 16 km from Tunduma on Chipita road, Nov. 1966, Gillett 17546!UGANDA Teso District Serere, Dec. 1931, Chandler 257!UGANDA Mengo District Jumba, Dec. 1916, Dummer 3032!UGANDA Masaka District E side of Lake Kayanja, July 1971, Lye & Katende 6500!
Notes
“Flowers only open from 9:30 to 11 a.m. ” ( Tweedie ,K3)

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