Atriplex pacifica

A. Nelson

Proc. Biol. Soc. Wash., 17: 99. 1904.

Common names: Pacific orach
Basionym: Obione microcarpa Bentham Bot. Voy. Sulphur, 48. 1844,
Synonyms: Atriplex ramosissima Nuttall ex Moquin-Tandon
Treatment appears in FNA Volume 4. Treatment on page 363. Mentioned on page 329.
Revision as of 23:18, 27 May 2020 by imported>Volume Importer

Herbs, annual, prostrate, sometimes tinged red, 1–6 dm, forming tangled masses 3–10 dm diam., lightly scurfy when young. Leaves numerous, sessile or proximal short petiolate; blade greenish adaxially, paler abaxially, oblanceolate to spatulate-elliptic or oval, (3–)5–18 × 1–8 mm, margin entire, more scurfy abaxially. Staminate flowers in glomerules largely in distal bractless axils, thus short spicate; calyx 5-cleft. Pistillate flowers in proximal axils. Fruiting bracteoles subsessile or stipe to 0.3 mm, suborbiculate to obovate, 1–1.5(–2) × 1.1–1.8 mm, united to middle, margin minutely 3–5-toothed at apex, otherwise entire, apex green, faces smooth or rarely tuberculate. Seeds light brown, 0.8–1 mm.


Phenology: Flowering early spring–fall.
Habitat: Mainly on sea bluffs
Elevation: 0-100 m

Distribution

V4 710-distribution-map.gif

Calif., Mexico (Baja California).

Discussion

The name Atriplex ramosissima was published by Moquin-Tandon as a synonym, based on a name on a specimen in Nuttall’s herbarium.

Selected References

None.

Lower Taxa

None.