View source for Lewisia oppositifolia

{{Treatment/ID
|accepted_name=Lewisia oppositifolia
|accepted_authority=(S. Watson) B. L. Robinson in A. Gray et al.
|publications={{Treatment/Publication
|title=in A. Gray et al., Syn. Fl. N. Amer.
|place=1: 268. 1897
|year=1897
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Calandrinia oppositifolia
|authority=S. Watson
|rank=species
|publication_title=Proc. Amer. Acad. Arts
|publication_place=20: 355. 1885
}}
|synonyms={{Treatment/ID/Synonym
|name=Oreobroma oppositifolium
|authority=(S. Watson) Howell
|rank=species
}}
|hierarchy=Portulacaceae;Lewisia;Lewisia oppositifolia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Portulacaceae]]</div><div class="higher-taxon"><small>genus</small>[[Lewisia]]</div><div class="higher-taxon"><small>species</small>[[Lewisia oppositifolia]]</div></div>
|volume=Volume 4
|mention_page=page 477, 482
|treatment_page=page 483
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="taproot architecture"><b>Taproots </b>gradually ramified distally.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;basal node location;basal node atypical some measurement;basal node some measurement"><b>Stems </b>erect, basal nodes underground, 10–20 (–25) cm.</span> <span class="statement" id="st-d0_s2" data-properties="basal leaf life cycle;basal leaf shape;basal leaf some measurement;petiole life cycle;petiole shape;petiole width;petiole shape;blade life cycle;blade shape;blade width;blade shape;margin architecture or shape;apex shape"><b>Leaves:</b> basal leaves withering at or soon after anthesis, abruptly narrowed into broad petiole, blade linear-spatulate to linear-oblanceolate, flattened, 4–11 cm, margins entire, apex obtuse to subacute;</span> <span class="statement" id="st-d0_s3" data-properties="cauline leaf arrangement;pair quantity">cauline leaves opposite, in 1–3 pairs near stem base, smaller than and similar to basal leaves.</span> <span class="statement" id="st-d0_s4" data-properties="inflorescence arrangement;inflorescence architecture;cyme architecture"><b>Inflorescences </b>racemose to subumbellate cymes, (1–) 2–5 (–6) -flowered;</span> <span class="statement" id="st-d0_s5" data-properties="bract arrangement;bract quantity;bract shape;bract some measurement;node life cycle;margin shape;margin shape;apex shape">bracts alternate proximally, 1–many at each flowering node distally, lanceolate, 4–8 mm, margins entire or toothed at apex, apex acute to acuminate.</span> <span class="statement" id="st-d0_s6" data-properties="flower architecture"><b>Flowers </b>pedicellate, not disarticulate in fruit;</span> <span class="statement" id="st-d0_s7" data-properties="sepal quantity;sepal shape;sepal atypical some measurement;sepal some measurement;sepal growth form or texture;margin shape;margin architecture or function or pubescence;apex shape">sepals 2, suborbiculate, 4–8 (–10) mm, herbaceous at anthesis, margins coarsely toothed but not glandular, apex obtuse to rounded;</span> <span class="statement" id="st-d0_s8" data-properties="petal quantity;petal coloration;petal shape;petal some measurement">petals 8–11, pink fading to white, oblanceolate to obovate, 9–15 mm;</span> <span class="statement" id="st-d0_s9" data-properties="stamen quantity">stamens 8–18;</span> <span class="statement" id="st-d0_s10" data-properties="stigma quantity">stigmas 3–5;</span> <span class="statement" id="st-d0_s11" data-properties="pedicel some measurement">pedicel 20–75 mm.</span> <span class="statement" id="st-d0_s12" data-properties="capsule some measurement"><b>Capsules </b>5–6 mm.</span> <span class="statement" id="st-d0_s13" data-properties="seed quantity;seed some measurement;seed reflectance;seed architecture or pubescence or relief"><b>Seeds </b>5–15, 1–1.8 mm, shiny, smooth.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Decomposed serpentine substrates
|elevation=300-1300 m
|distribution=Calif.;Oreg.
|discussion=<p>Lewisia oppositifolia is known only from Del Norte County, California, and Josephine County, Oregon.</p><!--
--><p>The floral symmetry of Lewisia oppositifolia may be somewhat elliptical, the outer two petals alternating with the sepals and the remaining petals imbricate and opposite the sepals, giving the flowers a pinched appearance, a feature also reported for L. nevadensis. The more diminutive, higher-elevation plants of L. oppositifolia possibly represent a distinct taxon that has been informally recognized as “Lewisia richeyi” (B. Mathew 1989b).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Lewisia oppositifolia
|authority=(S. Watson) B. L. Robinson in A. Gray et al.
|rank=species
|parent rank=genus
|synonyms=Oreobroma oppositifolium
|basionyms=Calandrinia oppositifolia
|family=Portulacaceae
|phenology=Flowering spring.
|habitat=Decomposed serpentine substrates
|elevation=300-1300 m
|distribution=Calif.;Oreg.
|reference=None
|publication title=in A. Gray et al., Syn. Fl. N. Amer.
|publication year=1897
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V4/V4_977.xml
|genus=Lewisia
|species=Lewisia oppositifolia
|apex shape=obtuse;rounded
|basal leaf life cycle=withering
|basal leaf shape=flattened
|basal leaf some measurement=4cm;11cm
|basal node atypical some measurement=20cm;25cm
|basal node location=underground
|basal node some measurement=10cm;20cm
|blade life cycle=anthesis
|blade shape=linear-spatulate;linear-oblanceolate
|blade width=broad
|bract arrangement=alternate
|bract quantity=1;many
|bract shape=lanceolate
|bract some measurement=4mm;8mm
|capsule some measurement=5mm;6mm
|cauline leaf arrangement=opposite
|cyme architecture=subumbellate
|flower architecture=pedicellate
|inflorescence architecture=(1-)2-5(-6)-flowered
|inflorescence arrangement=racemose
|margin architecture or function or pubescence=not glandular
|margin architecture or shape=entire
|margin shape=toothed;toothed;entire
|node life cycle=flowering
|pair quantity=1;3
|pedicel some measurement=20mm;75mm
|petal coloration=pink fading;white
|petal quantity=8;11
|petal shape=oblanceolate;obovate
|petal some measurement=9mm;15mm
|petiole life cycle=anthesis
|petiole shape=linear-spatulate;linear-oblanceolate
|petiole width=broad
|seed architecture or pubescence or relief=smooth
|seed quantity=5;15
|seed reflectance=shiny
|seed some measurement=1mm;1.8mm
|sepal atypical some measurement=8mm;10mm
|sepal growth form or texture=herbaceous
|sepal quantity=2
|sepal shape=suborbiculate
|sepal some measurement=4mm;8mm
|stamen quantity=8;18
|stem orientation=erect
|stigma quantity=3;5
|taproot architecture=ramified
}}<!--

-->[[Category:Treatment]][[Category:Lewisia]]