Plants aquatic, annual. Stems decumbent, dark yellowish in age, branched, 5-7 cm. Leaf blades linear, 3-12 mm, apex narrowly acute or attenuate. Inflorescences lax; flowers 1 per node. Pedicels 0.5-6 mm. Flowers 4-merous; sepals triangular-ovate, 0.7-0.8 mm, apex obtuse; petals triangular, 1.3 mm. Follicles ascending, 6-12-seeded, obliquely sublanceolate; old follicles spreading, flat. Seeds oblong to narrowly reniform, 0.4-0.6 × 0.1-0.3 mm, papillate, dull, rugose.

Flowering spring. Terrestrial or aquatic, margins of pools and streams; of conservation concern; 2100-2500 m; Ariz., Idaho; Mexico; South America (Brazil).

Crassula viridis occurs in the flora area on the Mogollon Rim of Arizona and near Priest River in Conner County, Idaho.

Plant: annual herb; to 7 cm long Leaves: linear, acute or attenuate, 3-10 mm long, 0.5 mm wide INFLORESCENCE: mostly cymose or thyroid, in ours the flowers solitary in axils of leaves, either 1 or 2 per node, the flowers clustered when upper leaves smaller and crowded Flowers: 1 per node, 1.2-1.7 mm long, on pedicels mostly 0.2-1 mm long; sepals triangular-ovate, obtuse to rounded, 0.3-0.9 mm long; petals lanceolate, acute, 1.0-1.6 mm long Fruit: FOLLICLES 6-17-seeded, slightly divergent, obliquely narrow-ovoid, the suture broadly outcurved through 90 degrees or more from near middle, the tiny style spreading. SEEDS oblong, papillate Misc: Infrequent, ponds in mts; 2100-2450 m (7000-8100 ft); Aug-Sep REFERENCES: Moran, Reid. 1994. Bixaceae. J. Ariz. - Nev. Acad. Sci. Volume 27, 190-194.