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Vascular Plants of California
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Polanisia dodecandra subsp. trachysperma
WESTERN CLAMMYWEED


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, distal simple, 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: 13 genera, +- 150 species: widespread tropics to arid temperate. Note: Treated as Capparaceae in TJM (1993); species of Carsonia, Oxystylis, Peritoma, and Wislizenia moved to Cleomella (Roalson et al. 2015).
eFlora Treatment Author: Robert E. Preston & Staria S. Vanderpool
Scientific Editor: Bruce G. Baldwin & 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.
Etymology: (Greek: many, unequal, from stamens) Note: Taxonomic position problematic.
eFlora Treatment Author: Robert E. Preston & Staria S. Vanderpool
Reference: Inda et al. 2008 Pl Syst Evol 274:111--126
Polanisia dodecandra (L.) DC. subsp. trachysperma (Torr. & A. Gray) H.H. Iltis
NATIVE
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.
Jepson eFlora Author: Robert E. Preston & Staria S. Vanderpool
Reference: Inda et al. 2008 Pl Syst Evol 274:111--126
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Polanisia dodecandra subsp. trachysperma

botanical illustration including Polanisia dodecandra subsp. trachysperma

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Citation for this treatment: Robert E. Preston & Staria S. Vanderpool 2012, Polanisia dodecandra subsp. trachysperma, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=52394, accessed on April 17, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 17, 2024.

Polanisia dodecandra subsp. trachysperma
click for enlargement
©2009 Barry Breckling
Polanisia dodecandra subsp. trachysperma
click for enlargement
©2020 Neal Kramer
Polanisia dodecandra subsp. trachysperma
click for enlargement
©2020 Neal Kramer
Polanisia dodecandra subsp. trachysperma
click for enlargement
©2020 Neal Kramer
Polanisia dodecandra subsp. trachysperma
click for enlargement
©2020 Neal Kramer

More photos of Polanisia dodecandra subsp. trachysperma
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Geographic subdivisions for Polanisia dodecandra subsp. trachysperma:
NCoRI, CaR, n&c SNF, ScV, MP
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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).





 

Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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 (fruiting time in some monocot genera).