Flora of North America species comparison

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Atriplex semibaccata

Atriplex spinifera

Australian saltbush, berry saltbush, creeping saltbush

spinescale saltbush, spiny saltbush
Habit Herbs or subshrubs, perennial, decumbent-prostrate, unarmed, mainly 0.5–8 dm and spreading to 15+ dm wide, unarmed, white scurfy when young; branches not angled. Shrubs, dioecious, erect, intricately much branched, mainly 3–15 dm; branchlets terete, becoming rigid and spinose.
Leaves

many, alternate, subsessile or short petiolate;

blade 1-veined, spatulate or obovate to oblong or elliptic, mainly 5–30(–40) × 2–9(–12) mm, base attenuate, margin remotely dentate to subentire, apex obtuse.

short petiolate to sessile;

blade ovate-deltate to elliptic or spatulate, (5–)10–27 mm, entire or subhastate.
Staminate flowers

in small, terminal, leaf-bracteate glomerules 1.5 mm wide.

borne in small axillary glomerules.
Pistillate flowers

solitary or in few-flowered clusters in almost all but distalmost leaves.

borne solitary or few in bract axils on short, spinose, lateral branchlets of a paniculate inflorescence.
Seeds

dimorphic: black, 1.5–1.7 mm, or brown, 2 mm.

reddish brown, 2–2.8 mm.
Fruiting

bracteoles red-fleshy at maturity, sessile or short stipitate, strongly veined, rhombic, convex, 3–6.6 × 2.8–4.5 mm, united at base, margin toothed, apex obtuse to acute.

bracteoles sessile or nearly so, body globose, connate, constricted below oblong to orbicular wings, 7–15 ×3.5–10 mm, entire or obscurely dentate, faces smooth to sparingly cristate.
2n

= 18.

Atriplex semibaccata

Atriplex spinifera
Phenology Flowering spring–early winter. Flowering summer–fall.
Habitat Saline waste places, along roads and sidewalks, in marshes, in various plant communities Xeric saline substrates, with mixed salt desert shrubs
Elevation 10-1000 m (0-3300 ft) 30-1300 m (100-4300 ft)
Distribution
from FNA
AZ; CA; DC; NM; NV; TX; UT; WA; Australia [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

The red-fleshy fruiting bracteoles are diagnostic of this introduced perennial, which is multi-stemmed from an often buried woody caudex.

The Australian species Atriplex muelleri Bentham is somewhat similar. It has been has reported, but not verified, in the North American flora.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Spiny saltbush apparently forms occasional hybrids with phases of Atriplex canescens, as indicated by the presence of wings on some of the fruiting bracteoles.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 4, p. 343. FNA vol. 4, p. 377.
Parent taxa Chenopodiaceae > Atriplex > subg. Atriplex > sect. Semibaccata Chenopodiaceae > Atriplex > subg. Pterochiton
Sibling taxa
A. acanthocarpa, A. amnicola, A. argentea, A. californica, A. canescens, A. confertifolia, A. cordulata, A. coronata, A. corrugata, A. coulteri, A. covillei, A. dioica, A. elegans, A. fruticulosa, A. gardneri, A. garrettii, A. glabriuscula, A. gmelinii, A. graciliflora, A. heterosperma, A. holocarpa, A. hortensis, A. hymenelytra, A. joaquiniana, A. klebergorum, A. laciniata, A. lentiformis, A. leucophylla, A. lindleyi, A. linearis, A. littoralis, A. matamorensis, A. mucronata, A. nudicaulis, A. nummularia, A. oblongifolia, A. obovata, A. pacifica, A. parishii, A. parryi, A. patula, A. pentandra, A. phyllostegia, A. pleiantha, A. polycarpa, A. powellii, A. prostrata, A. pusilla, A. rosea, A. saccaria, A. serenana, A. spinifera, A. suberecta, A. suckleyi, A. tatarica, A. torreyi, A. truncata, A. tularensis, A. watsonii, A. wolfii, A. wrightii
A. acanthocarpa, A. amnicola, A. argentea, A. californica, A. canescens, A. confertifolia, A. cordulata, A. coronata, A. corrugata, A. coulteri, A. covillei, A. dioica, A. elegans, A. fruticulosa, A. gardneri, A. garrettii, A. glabriuscula, A. gmelinii, A. graciliflora, A. heterosperma, A. holocarpa, A. hortensis, A. hymenelytra, A. joaquiniana, A. klebergorum, A. laciniata, A. lentiformis, A. leucophylla, A. lindleyi, A. linearis, A. littoralis, A. matamorensis, A. mucronata, A. nudicaulis, A. nummularia, A. oblongifolia, A. obovata, A. pacifica, A. parishii, A. parryi, A. patula, A. pentandra, A. phyllostegia, A. pleiantha, A. polycarpa, A. powellii, A. prostrata, A. pusilla, A. rosea, A. saccaria, A. semibaccata, A. serenana, A. suberecta, A. suckleyi, A. tatarica, A. torreyi, A. truncata, A. tularensis, A. watsonii, A. wolfii, A. wrightii
Synonyms A. flagellaris
Name authority R. Brown: Prodr., 406. (1810) J. F. Macbride: Contr. Gray Herb. 53: 11. (1918)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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