DESCRIPTION:--A much-branched shrub ·3 to 1·3 m. high. _Branches_ glandular-puberulous. _Leaves_ fascicled recurved 3 to 8 mm. long, linear to oblong, cuneate at the base, acute, toothed, punctate. _Flowers_ arranged racemosely at the ends of the branches. _Pedicels_ 7 mm. long, terete, rigid, viscid-puberulous. _Calyx_ 3 to 4 mm. long, deeply 5-lobed; lobes lanceolate-linear or oblong-lanceolate, acute, glandular-hairy. _Corolla-tube_ cylindric, somewhat swollen and twice curved above, glandular-hairy without, softly hairy in the throat; lobes broadly obovate, obtuse, entire, often curled or recurved, glandular-hairy outside. _Stamens_ 4, hardly exserted; filaments filiform, inserted on the corolla-tube. _Anthers_ 1-thecous, all perfect. _Ovary_ 2-chambered with numerous ovules; style subulate, included; stigma obtuse. _Fruit_ a capsule; valves cleft at the apex. _Seeds_ numerous, regose. (National Herb., Pretoria, No. 2937.) PLATE 196.--Fig. 1, longitudinal section of flower; Fig. 2, pistil; Fig. 3, cross-section of ovary. F.P.S.A., 1925. [Illustration: 197.] PLATE 197. EUPHORBIA TRIDENTATA. _Cape Province._ EUPHORBIACEAE. Tribe EUPHORBIEAE. EUPHORBIA, _Linn._; _Benth. et Hook. f. Gen. Plant._ vol. iii. p. 258. * * * * * =Euphorbia tridentata=, _Lam. Encycl._ ii. 416; _Fl. Cap._ vol. v. sect. ii. p. 298. * * * * * The species of _Euphorbia_ figured on the accompanying Plate is a somewhat rare plant and until quite recently it was not known where the plant was found, although it was known in European gardens and figured almost 100 years ago. The plant belongs to a small group of three species in the genus characterised by having the branches constricted at their origin of growth. All of them are very dwarf plants. We are indebted to Mr. H. M. Bartlett of Riversdale for the specimens which he sent in July 1924, and these were successfully grown at the Division of Botany, Pretoria, and flowered in September 1925.