Leaves crowded in a rosette, recurved-spreading. spinulose-serrate: fls. in a terminal head, nearly buried beneath the bracts; petals oblong, joined at the base; stamens attached to corolla-tube.—Monogr. by Mez (who recognizes 8 species) in DC. Monogr. Phaner. 9 (1896); by some, all are considered to be forms of one species. | Leaves crowded in a rosette, recurved-spreading. spinulose-serrate: fls. in a terminal head, nearly buried beneath the bracts; petals oblong, joined at the base; stamens attached to corolla-tube.—Monogr. by Mez (who recognizes 8 species) in DC. Monogr. Phaner. 9 (1896); by some, all are considered to be forms of one species. |