Scleranthus annuus subsp. annuus
Plants annual or biennial. Stems erect to prostrate, 2–25 cm. Leaf-blades 3–24 mm. Flowers usually equaling or exceeded by bracts; hypanthium becoming strongly 10-ribbed in fruit, 1.2–2 mm; sepals not overlapping, spreading to erect in fruit, 1.5–4 mm, margins 0.1 mm or less wide, apex acute; stamens ca. 1/2 length of sepals. “Fruits” 3.2–5 mm including sepals. 2n = 44 (Europe).
Phenology: Flowering winter–fall.
Habitat: Sandy fields, roadsides, weedy areas, lawns
Elevation: 0-1500 m
Distribution
Introduced; Alta., B.C., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Sask., Ala., Ark., Calif., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Oreg., Pa., R.I., S.C., Tenn., Vt., Va., Wash., W.Va., Wis., Europe, w Asia, n Africa, widely naturalized elsewhere, including Mexico, Central America (Costa Rica), South America (Ecuador), e Asia (South Korea), Africa (Kenya), Africa (Republic of South Africa), Pacific Islands (New Zealand)
Discussion
Selected References
None.