Flora of North America species comparison

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Atriplex semibaccata

Atriplex holocarpa

Australian saltbush, berry saltbush, creeping saltbush

pop 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. Herbs, annual or short-lived perennial, 1.5–3 dm, with a hard subligneous base.
Stems

branching, diffuse or procumbent, softly scurfy-tomentose.
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.

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.
Flowers

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.
Staminate flowers

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

Pistillate flowers

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

Seeds

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

broadly elliptic;

radical lateral, erect.
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, 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.
2n

= 18.

Atriplex semibaccata

Atriplex holocarpa
Phenology Flowering spring–early winter. Flowering summer.
Habitat Saline waste places, along roads and sidewalks, in marshes, in various plant communities Cultivated or weedy
Elevation 10-1000 m (0-3300 ft)
Distribution
from FNA
AZ; CA; DC; NM; NV; TX; UT; WA; Australia [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
TX; WY; Australia [Introduced in North America]
[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.)

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.)
Source FNA vol. 4, p. 343. FNA vol. 4, p. 342.
Parent taxa Chenopodiaceae > Atriplex > subg. Atriplex > sect. Semibaccata Chenopodiaceae > Atriplex > subg. Atriplex > sect. Spongiocarpus
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. 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. spinifera, 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) F. Mueller: Rep. Pl. Babbage’s Exped., 19. (1859)
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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