Thesium pycnanthum Schltr.

A small shrublet, up to about 1 ft. high; branches several from the base, erect or ascending, subterete, slender, glabrous; leaves acicular, very acute, 3-5 lin. long, about 1/4 lin. thick, with a very prominent midrib on the upper surface, rounded below, glabrous, with very narrow subtranslucent margins; flowers in small terminal heads; bracts linear-lanceolate, very acute, a little shorter than the open flower, keeled, with thinner reddish margins; bracteoles about two-thirds as long as the bracts but otherwise similar; perianth 1 3/4 lin. long, with distinct external glands; segments linear-lanceolate, hooded, 1-1 1/8 lin. long, with an apical beard; anthers included in the perianth-tube, 1/4 lin. long; style 1/8-1/4 lin. long, reaching to the base of the anthers; fruits ellipsoid-globose, 3 lin. long, prominently 10-ribbed, shining, distinctly reticulate between the ribs.