Compilation
Acacia tenuispina

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Name

Identification
Acacia tenuispina I.Verd. [family FABACEAE ]
Related name
  • Acacia tenuispina

Flora

Entry for Acacia tenuispina [family FABACEAE]
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
Acacia tenuispina [family FABACEAE]
Common names
A. permixta var. glabra Burtt Davy in Kew Bull. 1922 : 330 (1922); Fl. Transv. 2 : 340 (1932); Hutch., Botanist in S. Afr. 664 (1946). Type as above.
Information
Stoloniferous slender shrub 0,3-1(2) m high, many stemmed and often forming dense thickets; young branchlets grey- or reddish-brown to purplish-black, with numerous small scattered glands, often glutinous, glabrous or subglabrous. Stipules spinescent, in pairs, 0,4-5,6 cm long, straight or slightly deflexed, slender, whitish, glabrous; other prickles absent. Leaves: petiole 0,2-1,1 cm long, glabrous or subglabrous, adaxial gland absent; rhachis 0-3,8 cm long, glabrous or subglabrous, with a sessile to shortly stipitate gland at the junction of the top 1-2 pinnae pairs or of the only pair of pinna, otherwise with small scattered glands; pinnae 1-6 pairs; rhachillae 0,3-1,8 cm long, glabrous or sub­glabrous, usually with small scattered glands; leaflets (3)4-9 pairs per pinna, (2,1)3-4,8 X 0,8-1,5 mm, linear or linear-oblong to obovate-oblong, glabrous, entire, eglandular, lateral nerves invisible beneath, apex spinulose-mucronate. Inflorescences capitate, on axillary peduncles, solitary or fascicled, scattered along shoots of the current or previous season. Flowers bright yellow, sessile or very shortly pedicellate; peduncles 0,8-3 cm long, glabrous or subglabrous, sparingly to densely glandular; inv
Habitat
On the Springbok Flats north of Pretoria small shrubby plants occur which often can be distinguished from A. tenuispina only with some difficulty. Some of the plants have a similar growth form to A. tenuispina, but, as they lack the spinulose-mucronate leaflet apices and glandular pods, they are referred to A. karroo. It has been suggested by some collectors that the plants may be hybrids between A. karroo and A. tenuispina.
Use
20. Acacia tenuispina Verdoorn in Bothalia 6 : 156, fig. 5 (1951); Brenan in F.Z. 3,1 : 90 (1970); Ross in Bothalia 10 : 351 (1971). Type: Transvaal, Hoogbult Farm, Naboomspruit, Galpin 475 M (PRE, holo.!; K!).
Range
Found in south-eastern Botswana and the western Transvaal. Forms extensive low thickets, usually on black cotton soil.

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