Drosera burkeana Planch.
Creators: name: Rjosk, A.
name: Neinhuis, C.
name: Monizi, M.
name: Lautenschläger, T.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Droseraceae
Drosera
Drosera burkeana

description: 3. <i>Drosera burkeana</i> Planch. — Fig. 5 <i>Drosera burkeana</i> Planch. (1848) 192; Oliv. (1871) 402; Diels (1906) 88; G.C.C. Gilbert (1951) 552; Keay (1954) 26; J.R. Laundon (1959) 2; (1970) 26; Oberm.(1970) 194;A.S.Rob. et al. (2017) 1338. — Type: <i>J. Burke s.n.</i> (holo K), South Africa, Nordwest, Macalisberg. Perennial herb (sometimes annual), acaulescent. <i>Leaves</i> in a basal rosette (Fig. 5b), held horizontally; stipules 2–3.5 by c. 1.5 mm, membranous, connate at the base, apex lacerated (3 or more teeth), ferrugineous; lamina suborbicular, obovate to spathulate, 2–10 by 2–9 mm, reddish, adaxial surface and margins bearing tentacles, abaxially pilose, rarely glabrous (Fig. 5a); petiole 2–25 by 0.5–1 mm, linear throughout, abruptly broadening into the lamina, reddish, pilose (or glabrous). <i>Inflorescences</i> cymose, with 3–12 flowers; peduncles 1–4 together, 4–33 cm long, arising laterally, ascending, glandular; bracts linear, spathulate to narrowly obovate, 1–2 mm long, glandular or glabrous; pedicels 2–12 mm long, glandular. <i>Sepals</i> 5, elliptic to obovate, 2–5.5 by 2–2.5 mm, apex acute or obtuse, serrated, surfaces glandular (especially adaxially). <i>Petals</i> 5, obovate, 5–7 by 2–4 mm, pink to purple or white. <i>Stamens</i> 5, filaments 3–5 mm long, same colour as petals, anthers yellow. <i>Pollen</i> in tetrads, yellow, tetrads c. 40–46 µm diam, single grains c. 30–35 µm diam, pollen grains echinate (Fig. 5e), echini narrowly conical, c. 2 mm long, high density of echini, with short gemmate to clavate sculptural elements between echini. <i>Pistil</i>: ovary subglobose to obovate, 1.5–3.5 by 1–2.5 mm, glabrous, green; styles 3, 4–5 mm long, bipartite to the base, branches slender, curved upwards. <i>Seeds</i> ovoid, 0.3–0.4 by 0.15–0.2 mm, black, testa reticulate. Distribution — Angola, Botswana, Burundi, Congo, DRC, Kenya, Lesotho, Madagascar, Malawi, Mozambique, Namibia, South Africa, Swaziland, Tanzania, Uganda, Zambia, Zimbabwe (Fig. 5c). Habitat &amp; Ecology — Grows on loam, sand and peat, sea- sonally to perennially wet spots. <i>Additional specimens</i> (see Fig.5d for province map). ANGOLA, <i>Benguela</i>, Feuchte Wiese bei Humpata,alt. 1900 m, 9 Sept. 1950, <i>H. Hess 50/</i> 254 (ZT); <i>Cuanza Sul</i>, zona de Cassongue estrada em direc ҫão de Kahumbi,após do rio Cuvele femea, Inselberg, alt. 1580 m, 1 Apr. 2007, <i>T. Leyens 402</i> (FR); <i>Cunene</i>, Cuvelai,a cerca de 20 km para Cassinga, 22 July 1971, <i>R. Santos 2918</i> (COI); <i>Huambo</i>, Huambo, 1923, <i>H. Vanderyst 13125</i> (BR); près de la mission de Huambo, Aug. 1942, <i>C. Tisserant A94</i> (COI); 1 km W der prot. Mission von Elende, Cuma, alt. 1350 m, 25 July 1961, <i>J.B. Damann 3099</i> (ZT); Chianga, alt. 1700 m, 11 June 1962, <i>Teixeira &amp; Andrada 6445</i> (COI); <i>Huíla</i>, Serra de Chella, aux environs de Humpata, alt. 2000–2200 m, 1937, <i>H. Humbert 16650</i> (P); Humpata, Chongorola, rio Nene, pâtanos, 20 June 1937, <i>A.W. Exell &amp; F.A. Mendon ҫa 2989</i> (COI); Sá da bandeira, Jau, Can- galongue, 3 Oct. 1965, <i>C. Henriques 763</i> (COI); <i>Lunda</i>, 100 km norte de Muconda, 12 Aug. 1927, <i>Carrisso &amp; Mendon ҫa 221a</i> (COI); Rio Caunhango junto da estrada Mucango a Casage, 16 Aug. 1927, <i>Carrisso &amp; Mendon ҫa 264</i> (COI). – DRC, <i>Haut-Katanga</i>, 6.3 km au NNE du Peste de Katshupa, Plateau des Kundelungu, alt. 1580 m, 3 Aug. 1966, <i>F. Malaisse 4490</i> (BR); 7 km au N du Peste de Katshupa, Plateau des Kundelungu, alt. 1680 m, 1966-08-04, <i>F. Malaisse 4504</i> (BR); 6 km à l’WNW de la touree Oee de la Lut., Plateau des Kundelungu, alt. 1675–1680 m, 25 Mar. 1969, <i>S. Lisowski et al. 3975 &amp; 3453</i> (BR); <i>Haut-Katanga/ Haut-Lomami</i>, Parc National de l’Upemba,route automobile pour le Shinkulu,alt. 1450 m, 21 May 1948, <i>G.F. de Witte 03862</i> (BR); Parc National de l’Upemba, 24 Sept. 1949, <i>G.F. de Witte 07541</i> (BR); <i>Lualaba</i>, Dilolo, Sept. 1931, <i>Overlaet 1239</i> (BR); Biano, S10°16' E26°03', alt. 1575 m, 23 May 1952, <i>A. Schmitz 3918</i> (BR).
description: Published as part of <i>Rjosk, A., Neinhuis, C., Monizi, M. &amp; Lautenschläger, T., 2022, Synopsis of the genus Drosera (Droseraceae) in Angola and the Democratic Republic of the Congo, pp. 1-14 in Blumea - Biodiversity, Evolution and Biogeography of Plants 67 (1)</i> on page 7, DOI: 10.3767/blumea.2022.67.01.03, http://zenodo.org/record/7679465
description: {"references": ["Diels L. 1906. Droseraceae. In: Engler A (ed), Das Pflanzenreich IV. 112. Engelmann, Leipzig.", "Gilbert G. 1951. Droseraceae. In: Flore du Congo Belge et du Ruanda-Urundi. Institut national pour l'etude agronomique du Congo Belge.", "Keay RWJ. 1954. Flora of West Tropical Africa. Crown Agents for Oversea Governments and Administrations, London.", "Laundon JR. 1959. Droseraceae. In: Hubbard CE, Milne-Redhead E (eds), Flora of Tropical East Africa. Crown Agents for Oversea Governments and Administrations, London."]}