View source for Pyxidanthera brevifolia

{{Treatment/ID
|accepted_name=Pyxidanthera brevifolia
|accepted_authority=Wells
|publications={{Treatment/Publication
|title=J. Elisha Mitchell Sci. Soc.
|place=44: 238, plate 9. 1929 ,
}}
|common_names=Sandhills or Wells’s pyxie-moss;little pyxie
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Pyxidanthera barbulata var. brevifolia
|authority=(Wells) H. E. Ahles
|rank=variety
}}
|hierarchy=Diapensiaceae;Pyxidanthera;Pyxidanthera brevifolia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Diapensiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pyxidanthera]]</div><div class="higher-taxon"><small>species</small>[[Pyxidanthera brevifolia]]</div></div>
|volume=Volume 8
|mention_page=page 336
|treatment_page=page 337
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>commonly compact and not creeping or short-creeping, sometimes elongate and creeping, hairy; internodes usually to 1 mm. <b>Leaf</b> blades ovate-lanceolate to obovate-lanceolate, usually 2–4 mm, slightly succulent, those of fertile shoots eciliate, adaxial surface white-pilose throughout. <b>Flowers</b>: calyx pinkish; corolla lobes 2–3.5 mm. <b>2n</b> = 12.</span><!--

-->{{Treatment/Body
|phenology=Flowering Dec–Mar.
|habitat=Xeric sandhills, usually over deep sand or sand-clay mixtures near ridgetops or on upper slopes of sandhills, usually with Pinus palustris, Quercus laevis, Q. margarettiae, Q. marilandica, and Aristida stricta
|elevation=50-200 m
|distribution=N.C.;S.C.
|discussion=<p><i>Pyxidanthera brevifolia</i> is known only from a six-county area in the sandhills of North Carolina and South Carolina, where it is sympatric with <i>P. barbulata</i>. It occurs in xeric sites upslope; <i>P. barbulata</i> occurs in moist sites (seepage areas or streamhead ecotones). R. B. Primack and R. Wyatt (1975) concluded that recognition of only a single taxon is justified, based on a study of seven populations in the area where the two taxa are sympatric; they found that variation in leaf length and corolla lobe length is “clinal and associated with differences in soil moisture retaining capacity and other environmental parameters.” Recent intensive surveys in this area (Nature Conservancy 1993), in contrast, indicate that putative morphological intermediates are primarily phenotypic responses of <i>P. brevifolia</i> to shading by leaf litter and of <i>P. barbulata</i> to disturbance and/or canopy removal. The two taxa are morphologically and ecologically distinct, and ecologically intermediate sites usually are rarely occupied by <i>Pyxidanthera</i>. The sharp divide in habitat apparently provides reproductive isolation, and the taxa are appropriately recognized at specific rank. The key features consistently separate them, essentially returning to distinctions made by A. E. Radford et al. (1968).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Pyxidanthera brevifolia
|authority=Wells
|rank=species
|parent rank=genus
|synonyms=Pyxidanthera barbulata var. brevifolia
|basionyms=
|family=Diapensiaceae
|phenology=Flowering Dec–Mar.
|habitat=Xeric sandhills, usually over deep sand or sand-clay mixtures near ridgetops or on upper slopes of sandhills, usually with Pinus palustris, Quercus laevis, Q. margarettiae, Q. marilandica, and Aristida stricta
|elevation=50-200 m
|distribution=N.C.;S.C.
|reference=None
|publication title=J. Elisha Mitchell Sci. Soc.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V8/V8_665.xml
|genus=Pyxidanthera
|species=Pyxidanthera brevifolia
}}<!--

-->[[Category:Treatment]][[Category:Pyxidanthera]]