Crassula viridis

(S. Watson) Fedde

Just’s Bot. Jahresber. 31(1): 829. 1904,.

Basionym: Tillaea viridis S. Watson Proc. Amer. Acad. Arts 23: 272. 1888
Treatment appears in FNA Volume 8. Treatment on page 154. Mentioned on page 151, 152.

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.

Phenology: Flowering spring.
Habitat: Terrestrial or aquatic, margins of pools and streams
Elevation: 2100-2500 m


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Ariz., Idaho, Mexico, South America (Brazil).


Of conservation concern.

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

Selected References


Lower Taxa