Compilation
Lactuca inermis

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Name

Identification
Pyrhopappus hochstetteri A.Rich. [family ASTERACEAE ] Verified by Not on sheet, Lactuca inermis Forssk. [family ASTERACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Pyrhopappus humilis
  • Lactuca capensis
  • Pyrrhopappus not on sheet
  • Lactuca lebrunii
  • Lactuca leptocephala
  • Lactuca cf. capensis
  • Pyrhopappus hochstetteri
  • Lactuca kenyaensis
  • Lactuca inermis
  • Gyrrhopappus humilis
  • Lactuca hochstetteri
  • Lactuca vanderystii
  • Lactuca humilis
  • Lactuca abyssinica
  • Pyrrhopappus hochstetteri
  • Lactuca seretii
  • Gyrrhopappus hochstetteri

Flora

Entry for LACTUCA inermis Forssk. [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
LACTUCA inermis Forssk. [family COMPOSITAE], Fl. Aegypt.-Arab.: 144 (1775); J.R.I. Wood in K.B. 39: 132 (1984); Lawalrée, Dethier & Gilissen in F.A.C. Compositae: Cichorioideae: 62, t. 13 (1986); G.V. Pope in F.Z. 6: 205, t. 37c (1992); U.K.W.F. ed. 2: 230 (1994). Type: Yemen, Kusmah, Forsskal (C†, holo.); neotype (chosen by Wood) Yemen, Kusmah, J.R.I. Wood 75/833 (BM!, neo.)
LACTUCA capensis Thunb. [family COMPOSITAE], Prodr. Pl. Cap.: 139 (1800); Harv. in Fl. Cap. 3: 526 (1865); Oliv. & Hiern in F.T.A. 3: 452 (1877); S. Moore in J.B. 65, suppl. 2: 66 (1927); F.P.S. 3: 38 (1956); F.P.U.: 185 (1962); C.D. Adams in F.W.T.A. ed. 2, 2: 293 (1963); C. Jeffrey in K.B. 18: 450 (1966); Hilliard, Comp. Natal: 632 (1977); Dethier in B.J.B.B. 52: 377 (1982). Type: South Africa, Thunberg 18084 (UPS!, lecto., chosen by C. Jeffrey)
LACTUCA abyssinica Fresen. [family COMPOSITAE], in Mus. Senckenb. 3: 72 (1839); Oliv. & Hiern in F.T.A. 3: 453 (1877); Mendonça, Contr. Conh. Fl. Angola, Compositae: 151 (1943). Type: Ethiopia, Gondar to Adoua, Rüppell (FR, holo., P!, iso.)
LACTUCA rariflora Fresen. [family COMPOSITAE], in Mus. Senckenb. 3: 73 (1839). Type: Ethiopia, Simen [Semien], Rüppell (FR, holo.)
Pyrhopappus hochstetteri A. Rich. [family ], Tent. Fl. Abyss. 1: 463 (1848). Types: Ethiopia, Tchéleukote, Petit (K!, syn.) & Semien, Koubi Mts, Schimper 128 (K!, syn.)
Pyrhopappus humilis A. Rich. [family ], Tent. Fl. Abyss. 1: 463 (1848). Types: Ethiopia, Choa and Mt Aladjé, Petit (K!, syn.) & Entchetkab, Schimper 1172 (K!, BR!, syn.)
Lactuca hochstetteri (A. Rich.) Oliv. & Hiern [family COMPOSITAE], in F.T.A. 3: 453 (1877); Engl., Hochgebirgsfl. Trop. Afr.: 454 (1892)
Lactuca hochstetteri (A. Rich.) Oliv. & Hiern var. humilis [family COMPOSITAE], in F.T.A. 3: 454 (1877); Engl., Hochgebirgsfl. Trop. Afr.: 454 (1892)
Lactuca yemensis Deflers [family COMPOSITAE], Voy. Yemen: 160 (1889). Types: Yemen, Schibam Mts, Deflers 301, 321, 357 (all P!, syn.); Attura, Deflers 426 (P!, syn.); Hes and Taez, Botta (P, syn., not found)
Lactuca capensis De Wild. var. duruensis [family COMPOSITAE], in Ann. Mus. Congo, Bot., sér. 5, 2: 217 (1907). Type: Congo (Kinshasa), Poste de la Duru, Seret 496 (BR!, holo.)
Lactuca seretii De Wild. [family COMPOSITAE], in Ann. Mus. Congo, Bot., sér. 5, 2: 218 (1907), as sereti . Type: Congo (Kinshasa), Chief Missa’s territory, Seret 273 (BR!, holo.)
Lactuca vanderystii De Wild. [family COMPOSITAE], in B.J.B.B. 5: 87 (1915). Type: Congo (Kinshasa), Kimpako, Vanderyst (BR!, holo.)
Lactuca leptocephala Stebbins [family COMPOSITAE], in B.J.B.B. 14: 223, fig. 19/a–b (1936). Type: Congo (Kinshasa), Lubumbashi [Elisabethville], Quarré 4683 (UC, holo., BR!, iso.)
Lactuca kenyaensis Stebbins [family COMPOSITAE], in B.J.B.B. 14: 224, t. 19/c–d (1936). Type: Kenya, Kiambu District, Kabete, Edwards 3107 (UC, holo., K!, iso.)
Lactuca lebrunii Robyns [family COMPOSITAE], in B.J.B.B. 17: 105 (1943) & Fl. Sperm. Parc. Nat. Albert 2: 603 (1947). Type: Congo (Kinshasa), Katanda, Mt Mutangaisuba, Lebrun 7677 (BR!, holo.)
Lactuca capensis Dethier var. myriocephala [family COMPOSITAE], in B.J.B.B. 52: 379 (1982). Type: Congo (Kinshasa), Panzi, Luja 69 (BR!, holo.)
Lactuca inermis (Dethier) Lawalrée var. myriocephala [family COMPOSITAE], in Lawalrée, Dethier & Gilissen in F.A.C. Compositae: Cichorioideae: 66 (1986)
Information
Perennial herb 5–150(–240) cm high, erect (said to be scrambling in Bidgood et al. 3870), with a long thick taproot and with milky latex; stems solitary or few, branching distally, glaucous, sometimes with reddish tinge, glabrous or setose. Leaves scattered or crowded on the lower stem, sometimes almost absent at flowering time, glaucous green, membranous, sessile, narrowly lanceolate, 5–20 cm long, 0.3–1.6 cm wide (up to 7 cm wide including lobes), base semi-amplexicaul in basal leaves, sagittate in cauline ones, margins entire or remotely denticulate and sometimes with a few lateral lobes to 3 cm long, apex acute or mucronate, glabrous or sparsely setose beneath on midrib and main veins. Capitula few (3–4) to over a hundred in a leafy panicle, the branching of the inflorescence congested to lax, the bracts sagittate; involucre cylindric, 8–12 mm long, lengthening to 18 mm and flask-shaped with swollen base after anthesis; phyllaries lanceolate, green with reddish to purple markings and tips, 2–17 mm long, acute, the very apex with a little hair-tuft. Florets 2–14 per capitulum; corolla blue or mauve, less often pink, yellow or white, tube cylindric, 4–6 mm long, densely pilose distally, ligule 6–11 mm long, 1–2.6 mm wide. Achenes dark brown to black, ellipsoid, 4.5–8.5 mm long including a beak of 1.5–2.5 mm long, 1-ribbed on each face, glabrous or hispidulous; pappus in several series, white, 5–7 mm long. Fig. 21; fig. 20/8 (achene).
Range
DISTR. U 1–4; K 1–6; T 1–8 widely distributed in tropical southern Africa
Altitude range
(650–)1000–2800 (–3450) m
Distribution
KENYA Northern Frontier District Mt Kulal, June 1960, Oteke 113!KENYA Embu District Mwea Research Station, June 1976, Kahurananga & Kibui 2798!KENYA S Kavirondo District Mbita Point Field Station, Nov. 1981, Gachathi & Opon 89/81!TANZANIA Lushoto District Lushoto, Oct. 1966, Semsei 4110!TANZANIA Ufipa District Tatanda Mission, Nov. 1986, Brummitt & Goldblatt 18001!TANZANIA Mbeya District Galijembe Forest Reserve, Mporoto Ridge, Nov. 1992, Mwasumbi 16528!UGANDA Karamoja District Namalu, Aug. 1945, J. Wilson 1708!UGANDA Bunyoro District Kimengo, May 1962, B.J. Turner 732!UGANDA Masaka District Kyotera, Nov. 1945, Purseglove 1869!
Distribution (external)
Yemen
Madagascar
Notes
“Always in flower” (fide Tweedie 709), but sometimes almost without leaves. Variability is considerable, especially in flower colour and habit, so many names are attached to this species; but variation is also continuous, and no discrete taxa can be distinguished. As a pioneer, this is a polymorphic species. ADDENDUM/ERRATUM (published in Compositae - Part 3, 2005): Luke has collected Lactuca inermis in K 7; Sonchus schweinfurthii in K 7; Gutenbergia cordifolia var. pulchra in T 7, at 1220 m; Bothriocline amplifolia in T 7; Bothriocline longipes in K 7 and T 7; Struchium sparganophora in T 8; Vernonia zanzibarensis in T 7; Vernonia thomsoniana in T 7; Vernonia poskeana in K 3 and T 5; Vernonia nestor in T 7;

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