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BRASSICACEAE (Cruciferae) MUSTARD FAMILY

Ihsan A. Al-Shehbaz, except as noted

Annual to shrub; sap pungent, watery. Leaf: generally simple, alternate; generally both basal, cauline; stipules 0. Inflorescence: generally raceme, generally not bracted. Flower: bisexual, generally radial; sepals 4, generally free; petals (0)4, forming a cross, generally white or yellow to purple; stamens generally 6 (2 or 4), 4 long, 2 short (3 pairs of unequal length); ovary 1, superior, generally 2-chambered with septum connecting 2 parietal placentas; style 1, stigma entire or 2-lobed. Fruit: capsule, generally 2-valved, "silique" (length >= 3 × width) or "silicle" (length < 3 × width), dehiscent by 2 valves or indehiscent, cylindric or flat parallel or perpendicular to septum, segmented or not. Seed: 1–many, in 1 or 2 rows per chamber, winged or wingless; embryo strongly curved.
± 330 genera, 3780 species: worldwide, especially temperate. [Al-Shehbaz et al. 2006 Plant Syst Evol 259:89–120] Highest diversity in Mediterranean area, mountains of southwestern Asia, adjacent central Asia, western North America; some Brassica species are oil or vegetable crops; Arabidopsis thaliana used in experimental molecular biology; many species are ornamentals, weeds. Aurinia saxatilis (L.) Desvaux in cultivation only. Aubrieta occasional waif in central North Coast Ranges, Carrichtera annua (L.) DC. in South Coast, Iberis sempervirens L., Iberis umbellata L. in Peninsular Ranges, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern Outer North Coast Ranges, Central Coast. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Brassicaceae

PHYSARIA BLADDERPOD
Perennial herb with caudex (annual or biennial); hairs stellate, ± sessile. Stem: erect to decumbent or prostrate, simple or branched distally. Leaf: basal generally rosetted, simple, entire to wavy or dentate (pinnately lobed); cauline petioled or sessile, entire to wavy or dentate, base not lobed. Flower: sepals oblong to ovate, erect or spreading, sac-like at base; petals yellow (white or ± purple), widely ovate to spoon-shaped, clawed or not. Fruit: silicle, dehiscent, spheric to ovoid, ellipsoid, oblong, or spectacle-shaped, inflated and bladdery or not, unsegmented, generally not flattened (flattened); stigma entire. Seed: 4–28(40), in 2 rows, wingless (narrowly winged).
105 species: western North America, South America. (Greek: bladder, from inflated fruit) [Al-Shehbaz & O'Kane 2002 Novon 12:319–329]
Unabridged references: [Rollins & Shaw 1973 Harvard Univ Press:1–228]

Key to Physaria

P. kingii (S. Watson) O'Kane & Al-Shehbaz
NATIVE
Caudex simple or branched. Stem: prostrate to decumbent or erect, few to numerous, 0.5–2(4) dm. Leaf: basal (1.2)2–6(8) cm, ± round to oblanceolate, wide-elliptic, or rhombic, entire to wavy or dentate; cauline 0.5–2 cm, obovate to elliptic or spoon-shaped, different in shape, width from basal. Flower: sepals 4–6(7) mm; petals 6–13 mm, obovate to oblanceolate. Fruit: 3.2–9 mm, ± spheric to obovoid or ellipsoid, truncate to round-acute, ± compressed, densely hairy outside, glabrous to sparsely hairy inside; septum perforated; style 2–9 mm; pedicel 4.5–10(15) mm. Seed: 4–12(16), flat. [Lesquerella kingii (S. Watson) S. Watson] 7 subspecies total. Highly variable, more study needed. [Online Interchange]

P. kingii subsp. kingii
NATIVE
Fruit: tip truncate or ± notched; valves generally sparsely hairy inside; style to 7(9) mm. Seed: 4(8).
Dry rocky soils, limestone gravel, sagebrush hillsides, pinyon/juniper woodland; 1700–3800 m. East of Sierra Nevada, Desert Mountains; Oregon, Idaho, Nevada. [Lesquerella kingii subsp. kingii (S. Watson) S. Watson] May–Jun [Online Interchange]

Previous taxon: Physaria kingii subsp. bernardina
Next taxon: Physaria kingii subsp. latifolia

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 17 2014
Citation for this treatment: [Author of taxon treatment] 2013. Physaria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=80339, accessed on Sep 17 2014

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Geographic subdivisions indicated for the distribution of Physaria kingii subsp. kingii 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.
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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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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.
Blue line denotes eFlora flowering time.