Etymology: Scleranthus: from Greek scleros, "hard," and anthos, "flower," from the extremely hard hypanthium or calyx tube
Plants: spreading perennial, up to 6" tall forb; stems with many forks
Leaves: opposite, growing together at the base, linear
Flowers: greenish, tiny, 5-parted, mostly stalkless, no petals, sepals rounded with conspicuous white borders; inflorescence a tight, branched clusters; blooms June-Sept.
Habitat: disturbed areas
USDA Plants Database: Federal Distribution and detailed information including photos