View source for Physaria chambersii

{{Treatment/ID
|accepted_name=Physaria chambersii
|accepted_authority=Rollins
|publications={{Treatment/Publication
|title=Rhodora
|place=41: 403, plate 556, figs. 15–18. 1939
|year=1939
}}
|common_names=Chambers’s twinpod
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Physaria chambersii var. canaani
|authority=S. L. Welsh
}}{{Treatment/ID/Synonym
|name=Physaria chambersii var. sobolifera
|authority=S. L. Welsh
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Physarieae;Physaria;Physaria chambersii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Physarieae]]</div><div class="higher-taxon"><small>genus</small>[[Physaria]]</div><div class="higher-taxon"><small>species</small>[[Physaria chambersii]]</div></div>
|volume=Volume 7
|mention_page=page 618, 653
|treatment_page=page 631
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; caudex usually simple, sometimes branched, (thick, cespitose); (silvery) pubescent throughout, trichomes few-rayed, rays furcate, sometimes slightly fused at base, (umbonate, lightly tuberculate to nearly smooth). <b>Stems</b> several from base, erect or decumbent (arising laterally, unbranched), 0.5–1.5 mm. <b>Basal</b> leaves: (petiole slender); blade obovate to orbicular, 3–6 cm (width 10–20 mm), margins entire or dentate. <b>Cauline</b> leaves: blade spatulate, 1–2 cm (width 3–6 mm), margins entire, (apex often acute). <b>Racemes</b> congested. <b>Fruiting</b> pedicels (divaricate, slightly sigmoid), 8–15 mm. <b>Flowers</b>: sepals narrowly lanceolate, 5–8(–9) mm; petals narrowly oblanceolate, 9–12 mm, (claw undifferentiated from blade). <b>Fruits</b> (often purplish in age), didymous, subreniform, strongly inflated, 9–18 × 11–21(–30) mm, (papery, base obtuse to slightly cordate, apical sinus V-shaped or convex, open crests rounded); valves (2-keeled on side away from replum, each 3-sided, keels rounded, sides flat or slightly convex, retaining seeds after dehiscence), evenly and densely pubescent; replum oblong, as wide as or wider than fruits, apex obtuse; ovules 4–12 per ovary; style (4–)6–8 mm (exceeding sinus). <b>Seeds</b> flattened. <b>2n</b> = 8, 10, 16, 24.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–Jul.
|habitat=Clay hillsides, limestone gravel, dolomite ridges, roadbanks, loose gravel, reddish clay, sagebrush and pinyon-juniper areas
|elevation=1500-3200 m
|distribution=Ariz.;Calif.;Idaho;Nev.;Oreg.;Utah.
|discussion=<p>Physaria chambersii has been divided into three varieties based on whether the fruit is stipitate (var. canaani) or not, and whether the caudex elongates (var. sobolifera) or not (var. chambersii). In this species and in some others, e.g., P. newberryi, the latter character often depends on substrate and microclimate. Shifting substrates, such as moving sand and talus, often cause caudices to elongate. The species can be confused with 57. P. newberryi.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Physaria chambersii
|author=
|authority=Rollins
|rank=species
|parent rank=genus
|synonyms=Physaria chambersii var. canaani;Physaria chambersii var. sobolifera
|basionyms=
|family=Brassicaceae
|phenology=Flowering Apr–Jul.
|habitat=Clay hillsides, limestone gravel, dolomite ridges, roadbanks, loose gravel, reddish clay, sagebrush and pinyon-juniper areas
|elevation=1500-3200 m
|distribution=Ariz.;Calif.;Idaho;Nev.;Oreg.;Utah.
|reference=None
|publication title=Rhodora
|publication year=1939
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V7/V7_1032.xml
|tribe=Brassicaceae tribe Physarieae
|genus=Physaria
|species=Physaria chambersii
}}<!--

-->[[Category:Treatment]][[Category:Physaria]]