Thesium nigromontanum Sond.

A small heath-like subshrub branched from the base; branches erect or suberect, slender, subterete; leaves of two kinds, those towards the base of the plant linear and subterete, subobtuse, up to 4 lin. long, fleshy, glabrous; the upper closely adpressed to the shoot, subulate-lanceolate, acute, about 1 lin. long; cymules axillary, often sub-corymbose, with the flowers crowded at the apex, leafy in the lower part; flowers sessile or subsessile in the middle of the bract and two bracteoles; bract acutely acuminate from an ovate base, about the same length as the flower with minutely hirsute margins; bracteoles with blackened tips, ovate-lanceolate, acute, a little shorter than the flower; perianth saucer-shaped, 3/4 lin. long, with conspicuous external glands; segments triangular, thickened and deeply hooded at the apex, margins minutely hairy; anthers about 1/10 lin. long, exserted; filaments 1/9 lin. long; disc flat and conspicuous; style extremely short; fruit ellipsoid-campanulate, 1 1/4 lin. long, prominently 10-ribbed at the base, finely reticulate between the ribs.