Atriplex obovata |
Atriplex phyllostegia |
|
---|---|---|
broadscale, mound saltbush, New Mexico saltbush, silver saltbush |
leafcover saltweed, Truckee orach |
|
Habit | Subshrubs, dioecious, clump forming, mainly 2–8 dm and as wide, woody at base. | Herbs monoecious (or entirely pistillate), erect, much-branched, rounded, bushy, 0.5–6 dm. |
Stems | stiffly erect; branchlets terete. |
mostly ascending, terete. |
Leaves | tardily deciduous, alternate or proximal-most subopposite, shortly petiolate; blade gray green, oblong-ovate to elliptic or orbiculate, 8–30(–35) × 6–20 mm, margin entire or rarely dentate, apex rounded to retuse or obtuse. |
petiole 0.3–2 cm; blade 10–50 × 5–25 mm, base varying from shortly hastate to truncate or cuneate. |
Staminate flowers | yellow, in clusters 2–3 mm wide, borne in panicles 6–30 cm. |
in small to moderate, axillary glomerules near ends of branches, or in bracteate terminal spikes. |
Pistillate flowers | in small, very numerous glomerules in axils of elongated, terminal leafy-bracteate spikes or finally paniculate. |
in axillary clusters. |
Seeds | brown, 2.4–2.8 mm. |
brown, 1.2 mm. |
Fruiting | bracteoles sessile or substipitate, 4–5 × 5–9 mm, base broadly cuneate, margin sharply toothed, apical tooth subtended by 2–6 equal or smaller teeth, faces smooth or rarely tuberculate. |
bracteoles lanceolate or oblong, 5–14(–20) mm, sharply lobed to tuberculate at base, also often sharply cristate below usually attenuate apical lobe; tips widely recurved-spreading. |
Atriplex obovata |
Atriplex phyllostegia |
|
Phenology | Flowering summer–fall. | Flowering Apr–Aug. |
Habitat | Fine-textured substrates, with salt desert shrub and lower pinyon-juniper communities | Valley bottoms, silty or clay, less commonly, sandy alluvium with greasewood |
Elevation | 1500-2000 m (4900-6600 ft) | 1200-1500 m (3900-4900 ft) |
Distribution |
AZ; CO; NM; TX; UT; Mexico
|
NV
|
Source | FNA vol. 4, p. 371. | FNA vol. 4, p. 368. |
Parent taxa | Chenopodiaceae > Atriplex > subg. Pterochiton | Chenopodiaceae > Atriplex > subg. Obione > sect. Phyllostegiae |
Sibling taxa | ||
Synonyms | A. greggii, A. jonesii, A. obovata var. tuberata | Obione phyllostegia, A. draconis, A. phyllostegia var. draconis |
Name authority | Moquin-Tandon: Chenop. Monogr. Enum., 61. (1840) | (Torrey ex S. Watson) S. Watson: Proc. Amer. Acad. Arts 9: 108. (1874) |
Web links |