Atriplex serenana
Atriplex serenana var. davidsonii
bracteate orach, bractscale, saltscale, stinking orach
Davidson's bractscale, Davidson's orach, Davidson's saltscale
many, subsessile or very short petiolate;
blade subconcolorous, lanceolate to oblong, elliptic, or oval, (8–)10–30(–40) × 3–12(–15) mm, margin sharply dentate to entire.
in glomerules in terminal spikes or panicles 3–20 cm, or reduced to solitary, rounded, terminal glomerule.
in small clusters, axillary.
brown, 1–1.3(–1.5) mm.
bracteoles sessile or subsessile (stipe to 1 mm), cuneate-orbicular to obovate, somewhat compressed, 2.1–3.5 × (1.7–)2–3.7 mm, united 1/2 of length, margin sharply and often slenderly toothed beyond middle, faces often rather strongly veined, smooth or with 1 or more slender or flattened appendages.
bracteole 3-veined, 2.5–3.5 × 2.4–3.7 mm.
inflorescences of solitary, terminal, subglobose glomerules.
= 18.
Atriplex serenana
Atriplex serenana var. davidsonii
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Staminate inflorescence an elongate panicle or spike bearing numerous, beadlike glomerules; fruiting bracteoles ± 1-veined; mainly of central valley and Owens Valley, to w Nevada, also coastal and insu- lar, s California | var. serenana |
1. Staminate inflorescence of solitary, terminal, subglobose glomerule; fruiting bracteoles 3-veined; coastal s California | var. davidsonii |
CA
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