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Polanisia dodecandra subsp. trachysperma

Higher Taxonomy
Family: CleomaceaeView DescriptionDichotomous Key

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: PolanisiaView Description 

Habit: Annual, sticky, glandular-hairy. Leaf: leaflets 3--5, oblanceolate to ovate. Inflorescence: raceme, terminal, dense. Flower: bilateral; sepals +- free, deciduous; petals generally unequal, obovate, clawed, notched at tip; stamens 8--32, unequal, anthers not coiling; ovary +- sessile, subtended on 1 side by a prominent nectary. Fruit: dehiscent in upper 1/2; valves persistent; receptacle not stalk-like. Seed: many.
Species In Genus: 5 species: North America. Etymology: (Greek: many, unequal, from stamens) Note: Taxonomic position problematic.
Reference: Inda et al. 2008 Pl Syst Evol 274:111--126

Polanisia dodecandra (L.) DC. subsp. trachysperma (Torr. & A. Gray) H.H. Iltis
Leaf: many; petiole 1.5--4.5 cm; leaflets 1.6--4.5 cm. Inflorescence: appearing after leaves, 5--30 cm; pedicels 1--2.5 cm, green to purple. Flower: sepals 4--7 mm, purple; petals 6--13 mm, white, claw 4--5 mm; stamens 10--20, 5--40 mm, filaments purple, anthers 1--1.3 mm; nectary bright orange, spheric, concave at top, 2--2.3 mm; style 5--17 mm, deciduous, stigma purple. Fruit: 4--7 cm, 5--9 mm wide, green. Chromosomes: 2n=20.
Ecology: Gravel bars, roadsides, disturbed areas; Elevation: 30--1680 m. Bioregional Distribution: NCoRI, CaR, n&c SNF, ScV, MP; Distribution Outside California: to eastern Canada, southeastern United States. Flowering Time: Jun--Sep
Synonyms: Polanisia trachysperma Torr. & A. Gray;
Unabridged Note: Reports of Polanisia dodecandra subsp. dodecandra from California evidently in error.
eFlora Treatment Author: Robert E. Preston & Staria S. Vanderpool
Reference: Inda et al. 2008 Pl Syst Evol 274:111--126
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botanical illustration including Polanisia dodecandra subsp. trachysperma


Citation for this treatment: Robert E. Preston & Staria S. Vanderpool 2012, Polanisia dodecandra subsp. trachysperma, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 21, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on September 21, 2018.

Polanisia dodecandra subsp. trachysperma
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© 2009 Barry Breckling
Polanisia dodecandra subsp. trachysperma
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© 2016 Keir Morse
Polanisia dodecandra subsp. trachysperma
click for enlargement
© 2016 Keir Morse

More photos of Polanisia dodecandra subsp. trachysperma in CalPhotos

Geographic subdivisions for Polanisia dodecandra subsp. trachysperma:
NCoRI, CaR, n&c SNF, ScV, MP;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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Data provided by the participants of the Consortium of California Herbaria.
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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.