Thesium gracilarioides A.W.Hill

Robust rhizomatous suffrutex, up to 1 m tall, vegetative scales present on rhizome and lower parts of aerial stems, stems 2 to 16, arising from rhizome at intervals, erect at lower elevations, spreading and decumbent at higher elevations, branched, changing from green to yellow-orange as stems age, very prominently sulcate distally through decurrent leaves, becoming slightly sulcate to terete below, densely leafy (14 to 40 leaves per 50 mm at middle of stem). Leaves spreading, linear or linear-lanceolate, 3.0-14.5 x 0.3-1.0 mm, apex acuminate and usually cartilaginous, midrib raised on upper leaf surface but less so on lower leaf surface, margins entire. Flowers solitary in bract axils, arranged in 4 to 10-flowered monotelic racemose inflorescences, occasionally terminating in simple dichasial or monochasial cymes; pedicels 0.0-1.5 mm long. Bracts linear-lanceolate, 3.7-7.0 x 0.4-0.7 mm, acuminate, margins entire, fused to 2/3 of pedicel or entire pedicel; bracteoles 2.3-3.2 x 0.2-0.6 mm. Perianth 2.3-3.1 mm long, elongate receptacle absent, 'glands' often visible on outside; lobes narrowly triangular, 0.8-1.0 x 0.3-0.7 mm, apex slightly hooded, with more or less dense apical beard. Stamens inserted in perianth tube; filaments 0.1-0.5 mm long; anthers 0.2-0.7 mm long. Style 0.0-0.4(0.7) mm long, stigma ± opposite anthers, occasionally below anthers. Placental column straight. Fruit sessile, 3.0-5.0 mm long including persistent perianth (2.5-4.0 mm long excluding perianth), 1.6-2.4 mm wide, with prominent reticulate venation.