Compilation
Rhus marlothii

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Name

Identification
Rhus marlothii Engl. [family ANACARDIACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Rhus pyroides
  • Rhus marlothii

Flora

Entry for Rhus marlothii [family ANACARDIACEAE]
Herbarium
South African National Biodiversity Institute, Compton Herbarium, Cape Town (SAM)
Collection
Flora of Southern Africa
Resource Type
Reference Sources
Entry From
Flora of South Africa, (2003) Author: Dr J.P. Roux
Names
Rhus marlothii [family ANACARDIACEAE]
Common names
R. marlothii var. robustior Engl.: 208, t. 102 D-F (1921). Type: Namibia, Tsumeb, Dinter 1711 (SAM, lecto. vide Schonl.: 71 (1930) per R. tsemubensis Dinter ms.!). R. marlothii var. subintegra Engl.: 208, t. 102 G-J (1921). R. upingtoniae Dinter: 135 (1926). Type: Namibia, Groot-fontein, Dinter 691 (SAM, lecto.! here designated; GRA!, NH!, isolecto.).
Information
Unarmed or spinescent, much-branched shrub up to 2,2 m high. Bark smooth, grey, prominently lenticellate; branches whitish, branchlets puberu­lous. Leaves trifoliolate, petiolate; petiole semi-terete, shallowly canaliculate, (6—)12(—21) mm long; leaflets sessile, membranous to coriaceous, concolorous, glaucous to pale olive-green, amphistomatous, trichomes few, simple; lamina narrowly elliptic to obovate, base cuneate, apex obtuse to rounded, rarely mucronulate, margin entire to weakly pauciserrate towards apex, slightly thickened; venation kladodromous-brochidodromous, midrib prominent above, midrib and secondaries slightly prominent below, tertiaries inconspicuous; terminal leaflets (17-)34(-60) x (4-)13(-26) mm, lateral leaflets (10-)23(-40) x (4-)10(-22) mm. Panicles lax, axillary and terminal, latter up to 120 mm long, exposed. Flowers normal, styles persistent. Drupe rhombic, discoid, glabrous, shiny, 4,8 x 1,6 to 6,3 x 2,0 mm.
Habitat
Rhus marlothii is distinguished by its smooth pale branches, glaucous, obovate, amphistomatous leaflets and rhombic discoid drupes. It varies from a narrow-leaved spinescent morph (R. pallida Schinz ms. in Z) to a less spiny larger leaved morph in the north-east.
Use
24. Rhus marlothii Engl, in Botanische Jahrbucher 10: 37 (1888); Diels: 581, 627 (1898); Schonl.: 241 (1911); Engl.: 208, t. 102 (1921); Schonl.: 71, t. p. 71 (1930) p.p. excl. specim. quoad ex Transvaal; Burtt Davy: 505 (1932), sphalm; Merxm. & A. Schreib.: 12 (1968). Type: Namibia, Otjimbingue, 870 m, May 1886, Marloth 1394 (K, lecto.! here designated; BOL!, GRA!, NBG!, SAM!, Z!, isolecto.).
Range
Widespread in Namibia, where it occurs from the Kaokoveld in the north to Grootfontein in the east and then ranges through the central part of the country and the inner Namib reaching as far south as near Helmeringhausen. Flowering recorded in January and March. Map 21.

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