Thesium aggregatum A.W.Hill

Stems and branches ascending, subterete, glabrous; leaves small, flat, adpressed to the stem, lanceolate or linear-lanceolate, acute, 1 1/2-2 lin. long, rigid, blackish when dry, glabrous; flowers crowded in terminal heads, the latter subcapitate to oblong-linear; bracts ovate, acutely acuminate, with a broad fleshy midrib and green subtranslucent jagged-denticulate margins, glabrous; bracteoles as long as, but much narrower than the bracts, otherwise similar; perianth 1 1/2-2 lin. long, with a ring of hairs within the throat; segments about 1 5/8 lin. long, linear, subacute, with a stiff stout comb-like apical beard; anthers exserted from the perianth-tube, 1/4 lin. long; 10-ribbed, rather delicately reticulate between the ribs.