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FNA | Family List | FNA Vol. 4 | Chenopodiaceae | Atriplex

35b. Atriplex serenana A. Nelson ex Abrams var. davidsonii (Standley) Munz, Man. S. Calif. Bot. 598. 1935.

Davidson’s orach

Atriplex davidsonii Standley in N. L. Britton et al., N. Amer. Fl. 21: 57. 1916

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

Flowering spring-fall. Bluffs, alkaline sinks and drainages; 10-500 m; Calif.

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.


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