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Vascular Plants of California
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Cleomella obtusifolia
MOJAVE STINKWEED


Higher Taxonomy
Family: CleomaceaeView DescriptionDichotomous Key
Common Name: SPIDERFLOWER FAMILY
Habit: Annual, perennial herb, shrub, often ill-smelling. Leaf: generally 1-palmate, generally alternate, generally petioled; stipules generally minute, often bristle-like or hairy; leaflets 0 or 3--7. Inflorescence: raceme, head, or flowers 1, expanded in fruit; bracts generally 3-parted below, simple above, or 0. Flower: generally bisexual, radial to +- bilateral; sepals generally 4, free or fused, generally persistent; petals generally 4, free, +- clawed; stamens generally 6, free, exserted, anthers generally coiling at dehiscence; ovary superior, generally on stalk-like receptacle, chamber generally 1, placentas generally 2, parietal, style 1, persistent, stigma generally minute, +- head-like. Fruit: 2 nutlets or generally capsule, septicidal; valves generally 2, deciduous, leaving septum (frame-like placentas) behind; pedicel generally +- reflexed to spreading.
Genera In Family: 17 genera, +- 150 species: widespread tropics to arid temperate. Note: Treated as Capparaceae in TJM (1993).
eFlora Treatment Author: Robert E. Preston & Staria S. Vanderpool
Scientific Editor: Thomas J. Rosatti.
Genus: CleomellaView DescriptionDichotomous Key


Habit: Annual, generally glabrous. Stem: generally ascending to erect, sometimes prostrate when older, generally branched from base, often red-tinged. Leaf: generally many; petiole generally 7--20 mm; leaflets generally 3. Inflorescence: raceme, +- terminal, flowers 1 in leaf axils, or both; pedicel generally 4--25 mm. Flower: parts generally yellow; sepals fused in basal 1/3, generally entire; petals +- sessile, upper 2 often recurved. Fruit: 2--6 mm, often wider than long; septum elliptic to round; receptacle stalk-like. Seed: < 10.
Species In Genus: +- 10 species: arid western North America. Etymology: (Diminutive of Cleome)
Reference: Holmgren 2004 Brittonia 56:103--106
Cleomella obtusifolia Torr. & Frém.
NATIVE
Habit: Plant hairy. Stem: 1--9 dm, rough, younger ascending to erect, older prostrate, in +- round mat. Leaf: leaflets 5--15 mm, obovate. Inflorescence: on older stems raceme, 1--10 cm, dense, on younger stems flowers 1 in leaf axils. Flower: sepals 1--1.5 mm, ovate, green, hairy, margin long-hairy; petals 4--6(9) mm, dark yellow, abaxially hairy; stamens 8--14 mm, anthers 1.5--2.3 mm; style 1.5--5 mm. Fruit: 3--4 mm, hairy, striate; valves conic to horn-shaped; receptacle 6--8 mm, reflexed.
Ecology: Desert scrub, sandy, rocky alkaline flats; Elevation: < 1800 m. Bioregional Distribution: SNE, D; Distribution Outside California: western Nevada. Flowering Time: Apr--Oct Note: Variable; needs study.
Synonyms: Cleomella obtusifolia var. pubescens A. Nelson
Jepson eFlora Author: Robert E. Preston & Staria S. Vanderpool
Reference: Holmgren 2004 Brittonia 56:103--106
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Botanical illustration including Cleomella obtusifolia

botanical illustration including Cleomella obtusifolia

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Citation for this treatment: Robert E. Preston & Staria S. Vanderpool 2012, Cleomella obtusifolia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=19753, accessed on August 18, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on August 18, 2019.

Cleomella obtusifolia
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© 2011 Steve Matson
Cleomella obtusifolia
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© 2009 Gary A. Monroe
Cleomella obtusifolia
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© 2009 Gary A. Monroe
Cleomella obtusifolia
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© 2016 Steve Matson
Cleomella obtusifolia
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© 2009 Steve Matson
Cleomella obtusifolia
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© 2017 Neal Kramer

More photos of Cleomella obtusifolia in CalPhotos



Geographic subdivisions for Cleomella obtusifolia:
SNE, D
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.