Atriplex coulteri
Atriplex holocarpa
Coulter's orach, Coulter's orache, Coulter's saltbush
pop saltbush
frequently tinged with red, much branched, sparsely scurfy.
branching, diffuse or procumbent, softly scurfy-tomentose.
many, sessile or short petiolate;
blade obovate, oblong, oblanceolate, or elliptic, (5–)7–20 × 1–3(–5) mm, base cuneate, margin entire, apex acute.
alternate;
petiole to 1/2 as long as blade;
blade obovate or rhombic to deltoid, 10–30 mm, base obtuse, margin sinuate to serrate, apex irregularly toothed, acute.
in axillary glomerules, staminate in distal axils surrounded by pistillate flowers, these only and usually few together in most axils, very small and globular at anthesis.
in glomerules in distal axils and short terminal spikes.
in small axillary clusters.
brown, 1.3–1.5 mm.
broadly elliptic;
radical lateral, erect.
bracteoles sessile or subsessile, broadly obovate, 2–3 mm and as broad or about as broad, united 1/2 of length, margin free, deeply and sharply dentate, narrowed at summit, faces smooth or sometimes tuberculate.
bracteoles sessile, obovoid-globular, fused, scarcely compressed, 8–12 mm, of loosely fibrous and spongy consistency, with thin membranous epidermis and thin, inner membrane, opening at summit closed by 2 erect, appressed, entire or 3-toothed valves, apex shortly apiculate, not flattened at top.
Atriplex coulteri
Atriplex holocarpa
Of conservation concern.
Atriplex coulteri is closely allied to the geographically disjunct A. fruticulosa, from which it is said to differ in the compressed, small (2.5–3 mm) versus thickened and larger (3–5 mm) bracts. Specimens of A. fruticulosa, including the type, examined by me have bracteoles compressed-thickened, but hardly “globoid” as stated in the key to the species by H. M. Hall and F. E. Clements (1923). Additional specimens borrowed from California might clarify the situation; otherwise the two species are sufficiently close as to be treated as a single entity.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
I have seen no specimens of this species and therefore it is not mapped. H. M. Hall and F. E. Clements (1923) in discussion of the related Atriplex lindleyi (as A. halimoides) noted that it has “been grown in American gardens with the thought of using them as forage plants, but…has [not] been found suitable for general planting. P. G. Wilson (1984) indicated that the species is relatively widespread in Australia, mainly in southern parts, where it grows “often on flood-plains or sandy flats.”
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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