View source for Oxalis pilosa

{{Treatment/ID
|accepted_name=Oxalis pilosa
|accepted_authority=Nuttall in J. Torrey and A. Gray
|publications={{Treatment/Publication
|title=Fl. N. Amer.
|place=1: 212. 1838
|year=1838
}}
|common_names=Hairy western wood-sorrel
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Oxalis albicans subsp. pilosa
|authority=(Nuttall) G. Eiten
}} {{Treatment/ID/Synonym
|name=O. corniculata subsp. pilosa
|authority=(Nuttall) Lourteig
}} {{Treatment/ID/Synonym
|name=O. corniculata var. pilosa
|authority=(Nuttall) B. L. Turner
}} {{Treatment/ID/Synonym
|name=O. wrightii var. pilosa
|authority=(Nuttall) Wiegand
}} {{Treatment/ID/Synonym
|name=Xanthoxalis pilosa
|authority=(Nuttall) Small
}}
|hierarchy=Oxalidaceae;Oxalis;Oxalis pilosa
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Oxalidaceae]]</div><div class="higher-taxon"><small>genus</small>[[Oxalis]]</div><div class="higher-taxon"><small>species</small>[[Oxalis pilosa]]</div></div>
|volume=Volume 12
|mention_page=page 137
|treatment_page=page 143
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs </b>perennial, caulescent, rhizomes and stolons absent, bulbs absent. <b>Aerial</b> stems usually 2–8 from base, decumbent to ascending, 10–40 cm, becoming woody proximally, sparsely to densely pilose, hairs spreading irregularly to ± deflexed, nonseptate, longer hairs 0.6–1.2 mm. <b>Leaves</b> basal and cauline; stipules oblong, margins narrowly flanged, apical auricles absent; petiole (1–)2–6 cm, hairs nonseptate; leaflets 3, glaucous and gray-green to yellowish green, obcordate, 5–12 mm, lobed 1/5–1/3 length, surfaces glabrous to loosely strigose to hirsute-villous, oxalate deposits absent. <b>Inflorescences</b> umbelliform cymes, 1–2(–3)-flowered; peduncles 1.5–5 cm. <b>Flowers</b> semihomostylous or distylous, within level of leaves; sepal apices without tubercles, surfaces strigose to hirsute-strigose; petals yellow, rarely with red lines proximally, 8–12 mm. <b>Capsules</b> angular-cylindric, abruptly tapering to apex, 12–17(–20) mm, strigose-hirsute. <b>Seeds</b> brown to blackish brown, transverse ridges rarely with whitish lines or spots.</span><!--

-->{{Treatment/Body
|phenology=Flowering (Feb–)Mar–Jun(–Oct).
|habitat=Juniper-grasslands, pinyon-juniper, oak-juniper, oak, oak-pine, rocky and grassy hillsides, riparian woods (sycamore-walnut, cottonwood-willow), canyons, stream banks, washes, gravel bars.
|elevation=(700–)900–1900(–2000) m.
|distribution=Ariz.;Calif.;Nev.;N.Mex.;Oreg.;Utah;Mexico (Baja California;Chihuahua;Coahuila;Durango;Nuevo León;Sonora).
|discussion=<p><i>Oxalis pilosa</i> has been treated as an infraspecific entity within <i>O. albicans</i>, but the two are sympatric in the southwestern United States and although each is variable, there appear to be relatively few unequivocal intermediates. Reports of <i>O. pilosa</i> from Texas apparently were based on misidentifications of <i>O. albicans</i> and perhaps also of <i>O. dillenii</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Oxalis pilosa
|author=
|authority=Nuttall in J. Torrey and A. Gray
|rank=species
|parent rank=genus
|synonyms=Oxalis albicans subsp. pilosa;O. corniculata subsp. pilosa;O. corniculata var. pilosa;O. wrightii var. pilosa;Xanthoxalis pilosa
|basionyms=
|family=Oxalidaceae
|phenology=Flowering (Feb–)Mar–Jun(–Oct).
|habitat=Juniper-grasslands, pinyon-juniper, oak-juniper, oak, oak-pine, rocky and grassy hillsides, riparian woods (sycamore-walnut, cottonwood-willow), canyons, stream banks, washes, gravel bars.
|elevation=(700–)900–1900(–2000) m.
|distribution=Ariz.;Calif.;Nev.;N.Mex.;Oreg.;Utah;Mexico (Baja California;Chihuahua;Coahuila;Durango;Nuevo León;Sonora).
|reference=None
|publication title=Fl. N. Amer.
|publication year=1838
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V12/V12_10.xml
|genus=Oxalis
|species=Oxalis pilosa
}}<!--

-->[[Category:Treatment]][[Category:Oxalis]]