Diosma rourkei I.Williams

Shrubs 1-2 m tall, erect, single stemmed for about the first 25 cm above ground. Branches stiffly erect, glabrous, becoming rough. Branchlets arising in clusters of which only two or three persist after two to four years, slender, erect, minutely puberulous. Leaves c. 9 mm long, 1 mm broad, linear-lanceolate, acute, mucronate, petiolate, spreading-erect, scattered, dark green, hyaline margins narrow, sparsely ciliolate, abaxial surface glabrous with a rounded keel prominent when dried, gland dotted on both sides, abaxial surface minutely pubescent up the middle, somewhat convex when fresh becoming quite hollow when dry. Inflorescence terminal with the flowers up to 6 mm diam., aggregated into clusters of up to 12, opening in succession. Pedicel 1 mm long becoming longer, glabrous. Bract 4-5.5 mm long, 0.4-0.6 mm broad at the base, subulate, ciliolate, puberulous on both sides. Bracteoles two, 1.3 mm long, 0.4 mm broad, lanceolate, acute, ciliate, puberulous on both sides. Calyx lobes five, 2-2.3 mm long, 0.7-0.9 mm broad at the base, oblong, acute, glabrous, ciliate below, pubescent on the inside, widely spaced. Petals five, 2.8-2.8 mm long, 1.4-1.4 mm broad, oblong, glabrous, sessile, recurved, white, apex pseudo-retuse with a small elevated point, margins somewhat irregular with a few short cilia. Staminodes five, vestigial, a small gland towards the apex of the lobe. Filaments five, glabrous becoming 1.5 mm long, acicular, spreading after anthesis. Anthers five, before anthesis 0.9 mm long. 0.7 mm broad, oblong, yellow with a minute spherical apical gland. Pollen 46µ long, 25µ broad, oblong. Disc 5-sinuate-crenulate, with the lobes opposite the petals considerably elevated, pale green, stands wide open and free of the ovary, cup fills with nectar. Stigma 0.35 mm diam., capitate, globose, green, becoming sticky. Style erect, glabrous, becoming 1.3 mm long, persisting. Ovary 5-carpellate, 0.6 mm diam., glabrous, pale green, apices of the carpels with a gland surrounded by a few very small bristles. Fruit 5-carpellate, 8 mm long. 4.5 mm diam., pedicel 3 mm long; carpels glabrous, pale green or reddened if exposed, gland dotted on both sides; horns about 2.5 mm long, erect, dark green. Seed 3.7-4.3 mm long, 1.7-1.8 mm broad, black, shining.