Flora 24: 151. 1841.
Stems procumbent to erect, branches not twisted, 10–30 cm, glabrous. Leaves green to bluish green, (3–)10–25(–20) × 0.5–1 mm, base hyaline, sometimes with sparsely bristled margins, apex stiffly spine-tipped. Bracts ± 3 times perianth length. Bracteoles 1–2 times perianth length. Seeds 1.5–2 mm. 2n = 54.
Phenology: Flowering mid summer.
Habitat: Dry places, such as bare limestone flats
Elevation: 100-300 m
Introduced; Ont., Ill., N.Y., Europe.
Reports of this species are increasingly rare, perhaps due to loss of habitat.