Thesium scabrum L.

Stems erect, about 1 ft. high, densely leafy, with very short internodes, glabrous; leaves linear, acute, up to 1 in. long, but mostly about 1/2 in. long, more or less triguetrous, sharply pectinate-serrulate on the angles; flowers in dense terminal subglobose heads about 1/2 in. in diam.; bracts broadly ovate or ovate-lanceolate, acutely acuminate, with membranous scabrous margins and a broad keel; bracteoles similar, but narrower; perianth about 1 lin. long; segments 3/4 lin. long, bearded, ovate-lanceolate, acute; anthers included in the perianth-tube, 1/4 lin. long; style 1/4-1/2 lin. long; fruits oblong-ovoid, 2 1/4 lin. long, rather conspicuously 10-nerved, finely reticulate between the nerves.