Cleomella obtusifolia

Torrey & Frémont

in J. C. Frémont, Rep. Exped. Rocky Mts., 311. 1845.

Common names: Mojave stinkweed
Synonyms: Cleomella obtusifolia var. florifera Crum ex Jepson Cleomella obtusifolia var. jonesii Crum ex Jepson Cleomella obtusifolia var. pubescens A. Nelson Cleomella taurocranos
Treatment appears in FNA Volume 7. Treatment on page 212. Mentioned on page 209.

Plants 10–40(–120) cm. Stems profusely branched at base (usually spreading or mat-like, sometimes erect); moderately to densely hairy (sometimes spreading-hispidulous). Leaves: stipules finely divided into crinkled threads, 5–7 mm; petiole 0.7–0.8(–2) cm; leaflet blade elliptic to obovate, 0.5–1.5 × 0.2–0.8 cm, thin, margins entire, apex obtuse to rounded, mucronulate, surfaces spreading-hispidulous. Inflorescences racemes, terminating stems and branches (solitary flowers in leaf axils of distal stems), 0.5–1.2 cm (0.5–1 cm in fruit); bracts unifoliate, 2–7 mm. Pedicels ascending in fruit, 4–10 mm (3–12 mm in fruit). Flowers: sepals green, ovate-deltate, 1–1.5(–2.3) × 0.9–1.2 mm, sparsely hairy; petals yellow or orange, oblong, 3.5–6 × 1.2–2 mm, sparsely hairy abaxially; stamens yellow, 8–14 mm; anthers 1.5–2.2 mm; gynophore reflexed, 4–5 mm in fruit; ovary ± rhomboidal, 1–1.5 mm; style 2–3(–5) mm. Capsules rhomboidal, 3.5–4 × 7–10 mm (striate), strigose. Seeds (1–)2–6, light brown to gray with black mottling, globose, 1.5 mm, smooth.

Phenology: Flowering late winter–fall.
Habitat: Sandy, often alkaline flats and desert playas
Elevation: 300-1300(-2000) m


Cleomella obtusifolia is variable in degree of pubescence, elaboration of stipules, and fruit shape. Four varieties have been recognized; additional taxonomic investigation is desirable.

Selected References


Lower Taxa

... more about "Cleomella obtusifolia"
Staria S. Vanderpool +
Torrey & Frémont +
Mojave stinkweed +
Calif. +, Nev. +  and N.Mex. +
300-1300(-2000) m +
Sandy, often alkaline flats and desert playas +
Flowering late winter–fall. +
in J. C. Frémont, Rep. Exped. Rocky Mts., +
Cleomella obtusifolia var. florifera +, Cleomella obtusifolia var. jonesii +, Cleomella obtusifolia var. pubescens +  and Cleomella taurocranos +
Cleomella obtusifolia +
Cleomella +
species +