Entada rangei (Harms) S.A. O'Donnell & G.P. Lewis, 2022

O'Donnell, Shawn A., Ringelberg, Jens J. & Lewis, Gwilym P., 2022, Re-circumscription of the mimosoid genus Entada including new combinations for all species of the phylogenetically nested Elephantorrhiza (Leguminosae, Caesalpinioideae, mimosoid clade), PhytoKeys 205, pp. 99-145 : 99

publication ID

https://dx.doi.org/10.3897/phytokeys.205.76790

persistent identifier

https://treatment.plazi.org/id/B084EF3E-C265-5B27-902C-9242EAD98CC7

treatment provided by

PhytoKeys by Pensoft

scientific name

Entada rangei (Harms) S.A. O'Donnell & G.P. Lewis
status

comb. nov.

Entada rangei (Harms) S.A. O'Donnell & G.P. Lewis comb. nov.

= Elephantorrhiza suffruticosa Schinz, Mém. Herb. Boissier 8: 117. 1900, non Entada suffruticosa Vatke. 1881 [= Mimosa suffruticosa (Vatke) Drake]. Type: ANGOLA. Huila District, "Kilevi am Kunene", south of Humbe, Schinz 2071 (lectotype: Z, designated by J.H. Ross in Fl. Southern Afr. 16(1): 148. 1975).

Type.

NAMIBIA. Keetmanshoop District , Naute, near Keetmanshoop, P. Range 455 (holotype: B†; drawing: BM [BM000842180]; isotypes: BOL, NBG [SAM0073417-1, SAM0073417-2], SAM) .

Basionym.

Elephantorrhiza rangei Harms, Bot. Jahrb. Syst. 49(3-4): 420. 1913.

Description.

Shrub or small tree, 1-6 m tall (Fig. 20A View Figure 20 ). Leaves: petiole (0.6-)1.5-3.5 cm long; rachis (0.5-)10-17(-25.4) cm; pinnae (2-)15-27(-42) pairs per leaf, (1.4-)2-3.5(-6.8) cm long, with (17-)27-40(-50) pairs of leaflets; leaflets 3-7.5 × 0.4-1.2 mm, linear-oblong to linear, apex obtuse to acute, asymmetric and often mucronate, base oblique with proximal margin rounded, mid-rib marginal throughout or more rarely running from the distal corner of the leaflet base to the apex centre, lamina glabrous (Fig. 20B, C View Figure 20 ). Inflorescence: an axillary spiciform raceme, (4-)6-14(-18) cm long, 1-3 per axil or borne on short lateral shoots, rachis pubescent or sometimes glabrous (Fig. 20C View Figure 20 ). Flowers: yellowish-white, golden yellow or cream-coloured; pedicels 1 mm long, articulated near the middle, with minute reddish, reddish-brown or pale yellow glands at the base of the pedicels; calyx cupular, 1 mm long, shallowly toothed, glabrous; petals 3-3.75 mm long; stamen filaments 5 mm long. Fruit: a laterally compressed, straight to slightly curved craspedium, 8.5-30.5 × 1.8-2.25 cm, transverse veins usually prominent, lacking transverse septa between seeds, thus leaving the valves to separate from the replum intact upon ripening, the epicarp of both valves peeling away from the endocarp; umbonate over seeds (Fig. 20D View Figure 20 ). Seeds: ellipsoid, 13-15 × 9-12 mm.

Distribution.

Angola, Namibia, Zimbabwe, Mozambique.

Habitat and ecology.

Woodland and grassland, often in rocky areas; 1050-2130 m alt.

Note.

Elephantorrhiza rangei Harms was treated as a distinct species by Ross (1975a), although with some hesitation because the species was known only from the type locality and displays considerable variation in leaflet size, even on a single branch. Ross also noted that it "bears a superficial resemblance to Elephantorrhiza suffruticosa Schinz." Plants of the World Online (POWO) places Elephantorrhiza rangei as a synonym of Elephantorrhiza suffruticosa Schinz, but when transferred to the genus Entada , the epithet Entada suffruticosa cannot be used because the name Entada suffruticosa Vatke (1881, p. 108), for a Madagascan species (a synonym of Mimosa suffruticosa (Vatke) Drake), already exists.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Fabales

Family

Fabaceae

Genus

Entada

Loc

Entada rangei (Harms) S.A. O'Donnell & G.P. Lewis

O'Donnell, Shawn A., Ringelberg, Jens J. & Lewis, Gwilym P. 2022
2022
Loc

= Elephantorrhiza suffruticosa

O’Donnell & Ringelberg & Lewis 2022
2022
Loc

Entada suffruticosa

O’Donnell & Ringelberg & Lewis 2022
2022
Loc

Mimosa suffruticosa

O’Donnell & Ringelberg & Lewis 2022
2022