Allenrolfea occidentalis

(S. Watson) Kuntze

Revis. Gen. Pl. 2: 546. 1891

Basionyms: Halostachys occidentalis S. Watson Botany (Fortieth Parallel), 293. 1871
Treatment appears in FNA Volume 4. Treatment on page 321. Mentioned on page 322, 335.
Plants 3–15 dm, ± glaucous. Stems woody proximally, fleshy distally; articulations (joints) (2–)3–5(–10) × 1–4.5 mm. Leaves deciduous; blade 2–4 × 2–3 mm. Inflorescences 6–25 × 2.5–4 mm. Utricles enclosed by perianth. Seeds ca. 0.6 mm.

Phenology: Flowering mid summer–late fall.
Habitat: Alkaline soils, mostly on raised sandy hummocks in salt playas and mud flats
Elevation: 1000-1700 m


V4 623-distribution-map.gif

Ariz., Calif., Idaho, N.Mex., Nev., Oreg., Tex., Utah, Mexico.


A dominant shrub of salt playas and mudflats in the American Southwest, iodine bush is easily distinguished from great distances by the dark hue of its stems. The blackish-colored shrubs stand in stark contrast to surrounding vegetation and on close examination can be easily distinguished from the opposite-branched, but vegetatively similar members of Sarcocornia.

Selected References


Lower Taxa


AuthorLeila M. Shultz +
Authority(S. Watson) Kuntze +
BasionymsHalostachys occidentalis +
DistributionAriz. +, Calif. +, Idaho +, N.Mex. +, Nev. +, Oreg. +, Tex. +, Utah + and Mexico. +
Elevation1000-1700 m +
HabitatAlkaline soils, mostly on raised sandy hummocks in salt playas and mud flats +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering mid summer–late fall. +
Publication titleRevis. Gen. Pl. +
Publication year1891 +
ReferenceNone +
Source xml grained fna xml/V4/V4 623.xml +
Taxon familyChenopodiaceae +
Taxon nameAllenrolfea occidentalis +
Taxon parentAllenrolfea +
Taxon rankspecies +
VolumeVolume 4 +