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
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=O. corniculata subsp. pilosa
|authority=(Nuttall) Lourteig
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=O. corniculata var. pilosa
|authority=(Nuttall) B. L. Turner
|rank=variety
}} {{Treatment/ID/Synonym
|name=O. wrightii var. pilosa
|authority=(Nuttall) Wiegand
|rank=variety
}} {{Treatment/ID/Synonym
|name=Xanthoxalis pilosa
|authority=(Nuttall) Small
|rank=species
}}
|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-d0_s0" data-properties="whole_organism duration;whole_organism growth form;rhizome architecture;rhizome presence;stolon architecture;stolon presence;bulb presence"><b>Herbs </b>perennial, caulescent, rhizomes and stolons absent, bulbs absent.</span> <span class="statement" id="st-d0_s1" data-properties="stem location;stem quantity;stem orientation;stem some measurement;stem texture;stem pubescence;hair orientation;longer hair orientation;longer hair some measurement"><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.</span> <span class="statement" id="st-d0_s2" data-properties="leaf position;leaf position"><b>Leaves </b>basal and cauline;</span> <span class="statement" id="st-d0_s3" data-properties="stipule shape;margin shape;apical auricle presence">stipules oblong, margins narrowly flanged, apical auricles absent;</span> <span class="statement" id="st-d0_s4" data-properties="petiole atypical some measurement;petiole some measurement">petiole (1–) 2–6 cm, hairs nonseptate;</span> <span class="statement" id="st-d0_s5" data-properties="leaflet quantity;leaflet pubescence;leaflet coloration;leaflet shape;leaflet some measurement;leaflet shape;leaflet length;surface pubescence;oxalate deposit presence">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.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence architecture;cyme architecture"><b>Inflorescences </b>umbelliform cymes, 1–2 (–3) -flowered;</span> <span class="statement" id="st-d0_s7" data-properties="peduncle some measurement">peduncles 1.5–5 cm.</span> <span class="statement" id="st-d0_s8" data-properties="flower architecture"><b>Flowers </b>semihomostylous or distylous, within level of leaves;</span> <span class="statement" id="st-d0_s9" data-properties="surface pubescence">sepal apices without tubercles, surfaces strigose to hirsute-strigose;</span> <span class="statement" id="st-d0_s10" data-properties="petal coloration;petal some measurement;line coloration">petals yellow, rarely with red lines proximally, 8–12 mm.</span> <span class="statement" id="st-d0_s11" data-properties="capsule shape;capsule shape;capsule atypical some measurement;capsule some measurement;capsule pubescence"><b>Capsules </b>angular-cylindric, abruptly tapering to apex, 12–17 (–20) mm, strigose-hirsute.</span> <span class="statement" id="st-d0_s12" data-properties="seed coloration;ridge dehiscence or orientation;line coloration"><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);Mexico (Chihuahua);Mexico (Coahuila);Mexico (Durango);Mexico (Nuevo León);Mexico (Sonora)
|discussion=<p>Oxalis pilosa has been treated as an infraspecific entity within O. albicans, 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 O. pilosa from Texas apparently were based on misidentifications of O. albicans and perhaps also of O. dillenii.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Oxalis pilosa
|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);Mexico (Chihuahua);Mexico (Coahuila);Mexico (Durango);Mexico (Nuevo León);Mexico (Sonora)
|reference=None
|publication title=Fl. N. Amer.
|publication year=1838
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V12/V12_10.xml
|genus=Oxalis
|species=Oxalis pilosa
|apical auricle presence=absent
|bulb presence=absent
|capsule atypical some measurement=17mm;20mm
|capsule pubescence=strigose-hirsute
|capsule shape=tapering;angular-cylindric
|capsule some measurement=12mm;17mm
|cyme architecture=umbelliform
|flower architecture=distylous
|hair orientation=spreading
|inflorescence architecture=1-2(-3)-flowered
|leaf position=cauline;basal
|leaflet coloration=gray-green;yellowish green
|leaflet length=1/5;1/3
|leaflet pubescence=glaucous
|leaflet quantity=3
|leaflet shape=lobed;obcordate
|leaflet some measurement=5mm;12mm
|line coloration=whitish;red
|longer hair orientation=deflexed
|longer hair some measurement=0.6mm;1.2mm
|margin shape=flanged
|oxalate deposit presence=absent
|peduncle some measurement=1.5cm;5cm
|petal coloration=yellow
|petal some measurement=8mm;12mm
|petiole atypical some measurement=1cm;2cm
|petiole some measurement=2cm;6cm
|rhizome architecture=caulescent
|rhizome presence=absent
|ridge dehiscence or orientation=transverse
|seed coloration=brown;blackish brown
|stem location=aerial
|stem orientation=decumbent;ascending
|stem pubescence=pilose
|stem quantity=2;8
|stem some measurement=10cm;40cm
|stem texture=woody
|stipule shape=oblong
|stolon architecture=caulescent
|stolon presence=absent
|surface pubescence=strigose;hirsute-strigose
|whole_organism duration=perennial
|whole_organism growth form=herb
}}<!--

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