Thesium glomeruliflorum Sond.

An under-shrub up to 1 1/2 ft. high; stem angular or almost winged, glabrous; branches ascending; leaves linear, broadening towards base, acute, 1/3-3/4 in. long, flat on the upper surface, rounded on the lower, glabrous; flowers 3-5 in axillary sessile or very shortly pedunculate clusters, the latter about half as long as the leaves; bracts and bracteoles imbricate around and much longer than the flowers, lanceolate, acute, up to 2 lin. long, prominently keeled; perianth 3/4 lin. long, with external glands between the segments; segments erect, lanceolate, obtuse, 1/2 lin. long, glabrous; anthers exserted from the perianth-tube, 1/8 lin. long, dark-coloured; style very short.