Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
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.

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
Jepson Online Interchange

Previous taxon: Polanisia
Next taxon: Wislizenia

Name Search
botanical illustration including Polanisia dodecandra subsp. trachysperma


Citation for this treatment: Robert E. Preston & Staria S. Vanderpool 2016. Polanisia dodecandra subsp. trachysperma, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 02, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 02, 2016.

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

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. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.