Stems 0.8-5 dm. Leaves whorled; petiole 1-7 mm; blade obovate or elliptic to broadly spatulate, 5-25 × 2-17 mm, base cuneate, apex broadly rounded to acute. Flowers in clusters of 3-11; sepals lanceolate or oblong, 4.1-6.8 × 1.1-2.1 mm, stellate-pubescent abaxially, glabrous adaxially, apex long-acuminate to attenuate; stamens 3-5. Capsules ellipsoid, 3-3.5 mm. Seeds 10-25 per locule, red-brown to golden brown, 0.4-0.5 × 0.2-0.3 mm, smooth, highly glossy. 2n = 18. Flowering late summer-fall. Moist sandy soils, river bottoms, fields, edges of intermittent pools; 0-500 m; Ariz., Ark., Calif., La., Okla., Tex.; Mexico; West Indies; South America. Glinus radiatus is considered native to tropical and subtropical areas in the New World, although it is doubtfully native in North America. While it is unclear whether the species is native in Louisiana, where it is most common, it is undoubtedly introduced in Arizona (M. A. Lane and D. J. Keil 1976) and California (M. H. Grayum and D. L. Koutnik 1982). In Louisiana, Glinus radiatus occurs in the same habitat as G. lotoides, and the two species grow together in some populations. Some evidence of intermediates in those populations indicates hybrids may form between the two species, but this needs further investigation. Glinus radiatus and G. lotoides are most easily distinguished by seed characteristics (J. W. Thieret 1966b).

STEMS: to 35 em long. LEAVES to 20 mm long, to 12 mm wide. FLOWERS: mostly 4-10 per cluster, the pedicels to 2 mm long; sepals 4-5(-6) mm long, the apex attenuate or long-acuminate. SEEDS: ca. 0.4-0.5 mm long, red-brown, smooth but visibly reticulate with a cross-hatched pattern. 2n = 18, 36. NOTES: Disturbed areas, often associated with stock tanks: Cochise, Gila, Maricopa, Pima, Santa Cruz, Yuma cos.; 250-1200 m (900-4000 ft.); May-Oct; CA, LA, OK, TX, s to CArner., W. Ind. First collected in Arizona in 1975 (Lane, M. A. and D. J. Keil. 1976. Madrofio 23:457). REFERENCES: Christy, Charlotte M. 1998. Molluginaceae. J. Ariz. – Nev. Acad. Sci. 30(2): 112..