Atriplex serenana var. davidsonii

(Standley) Munz

Man. S. Calif. Bot., 598. 1935

Common names: Davidson’s orach
Basionyms: Atriplex davidsonii Standley in N. L. Britton et al., N. Amer. Fl. 21: 57. 1 916
Treatment appears in FNA Volume 4. Treatment on page 361.

Staminate inflorescences of solitary, terminal, subglobose glomerules. Fruiting bracteole 3-veined, 2.5–3.5 × 2.4–3.7 mm.

Phenology: Flowering spring–fall.
Habitat: Bluffs, alkaline sinks and drainages
Elevation: 10-500 m


L. Abrams and R. S. Ferris (1923–1960, vol. 2) maintained this taxon at the specific level; however, apart from the more apparently veined fruiting bracteoles and reduced staminate inflorescence, var. davidsonii is otherwise identical to var. serenana. It is often found growing with seepweed, samphire, numerous salt-tolerant annuals, other saltbush species.

Selected References


Lower Taxa