Compilation
Atriplex confertifolia

33 Images see all

Previous
Next

Name

Identification
Isotype of Atriplex confertifolia (Torr. & Frém.) S. Watson [family AMARANTHACEAE ] (stored under name); Verified by S.L. Welsh,, Atriplex subconferta Rydb. [family AMARANTHACEAE ] Verified by Not on sheet, Atriplex confertifolia (Torr. & Frém.) S. Watson [family AMARANTHACEAE ] Verified by Not on sheet, Isotype of Atriplex subconferta Rydb. [family AMARANTHACEAE ] Verified by Not on sheet,
Related name
  • Atriplex subconferta
  • Atriplex confertifolia
Common name
  • Shadscale, Flora of North America Vol. 4

Flora

Entry for Atriplex confertifolia (Torrey & Frémont) S. Watson [family CHENOPODIACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 4,
Names
Atriplex confertifolia (Torrey & Frémont) S. Watson [family CHENOPODIACEAE], Proc. Amer. Acad. Arts, 9: 119. 1874
Obione confertifolia Torrey & Frémont [family CHENOPODIACEAE], in J. C. Frémont, R ep. Exped. Rocky Mts., 318. 1845
Atriplex collina Wooton & Standley [family CHENOPODIACEAE]
Atriplex subconferta Rydberg [family CHENOPODIACEAE]
Obione rigida Torrey & Frémont [family CHENOPODIACEAE]
Treatment Author(s)
Stanley L. Welsh
Information
Shrubs, dioecious, 3–8 dm, spinescent. Leaves persistent, alternate; petiole 1–4 mm; blade orbiculate to ovate, elliptic, or oval, 9–25(–45) × 4–20(–25) mm, margin entire, apex obtuse. Staminate flowers yellow, in clusters 2–4 mm wide or in spikes to 1 cm, axillary, in foliose-bracteate, divaricately branched panicles 3–15 cm. Pistillate flowers in similar paniculate inflorescences. Fruiting bracteoles sessile or subsessile, suborbiculate to rhombic or elliptic, 4–12 mm and wide, body indurate, terminal teeth distinct, foliaceous, shorter than bracteoles, entire or toothed below, terminal teeth spreading at maturity, faces smooth, lacking appendages. Seeds 1.5–2 mm wide. 2n = 18, 36, 54+.
Phenology
mar-may (spring), jun-aug (summer), sep-nov (fall)
Altitude range
600–2200 m;
Distribution
USA Ariz.USA Calif.USA Colo.USA IdahoUSA Mont.USA Nev.USA N.Mex.USA N.Dak.USA Oreg.USA Tex.USA UtahUSA Wyo.
Discussion
Shadscale forms hybrids with Atriplex canescens, A. garrettii, A. corrugata, and A. gardneri varieties. It is, however, closely allied to A. parryi and A. spinifera. The plants are widely dispersed, typically on saline substrates but less commonly on essentially non-saline ones, through large areas of the western United States and adjacent Canada and Mexico, on both raw and exposed geological strata and on alluvium.

Related Materials