View source for Cheilanthes covillei

{{Treatment/ID
|accepted_name=Cheilanthes covillei
|accepted_authority=Maxon
|publications={{Treatment/Publication
|title=Proc. Biol. Soc. Wash.
|place=31: 147. 1918
|year=1918
}}
|common_names=Coville's lip fern
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Myriopteris covillei
|authority=(Maxon) A. Löve & D. Löve
|rank=species
}}
|hierarchy=Pteridaceae;Cheilanthes;Cheilanthes covillei
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pteridaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cheilanthes]]</div><div class="higher-taxon"><small>species</small>[[Cheilanthes covillei]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>short-creeping, usually 2–4 mm diam.; scales usually uniformly dark brown to black or rarely with narrow, light brown margins, linear-lanceolate, straight to slightly contorted, strongly appressed, persistent. <b>Leaves</b> clustered, 5–30 cm; vernation noncircinate. <b>Petiole</b> dark brown, rounded adaxially. <b>Blade</b> lanceolate to ovate-deltate, 3–4-pinnate at base, 1.5–5 cm wide; rachis rounded adaxially, somewhat scaly, not pubescent. <b>Pinnae</b> not articulate, dark color of stalk continuing into pinna base, basal pair not conspicuously larger than adjacent pair, usually equilateral, appearing glabrous (or somewhat scaly) adaxially. <b>Costae</b> green adaxially for most of length; abaxial scales multiseriate, ovate-lanceolate, deeply cordate at base, with overlapping basal lobes, conspicuous, the largest 0.4–1.5 mm wide, strongly imbricate, usually concealing ultimate segments, ciliate only on basal lobes. <b>Ultimate</b> segments round to oblong, beadlike, the largest 1–3 mm, abaxially glabrous or with a few small scales near base, adaxially glabrous. <b>False</b> indusia marginal, weakly differentiated, 0.05–0.25 mm wide. <b>Sori</b> ± continuous around segment margins. <b>Sporangia</b> containing 64 spores. <b>2n</b> = 60.</span><!--

-->{{Treatment/Body
|phenology=Sporulating late spring–fall.
|habitat=Rocky slopes, cliffs, and ledges, usually on igneous substrates
|elevation=100–2500 m
|distribution=Ariz.;Calif.;Nev.;Utah;Mexico in Baja California.
|discussion=<p><i>Cheilanthes covillei</i> can be difficult to distinguish from the closely related <i>C. intertexta</i> and <i>C. clevelandii</i>; it differs from these two species in having glabrous blades and costal scales ciliate only on the basal lobes. <i>Cheilanthes covillei</i> is occasionally misidentified as <i>C. fendleri</i> because the cilia of the scales are often obscure; it is distinguished from the latter species by having rigid, dark brown stem scales that are strongly appressed. <i>Cheilanthes covillei</i> hybridizes with <i>C. parryi</i> and <i>C. newberryi</i> to form rare, sterile diploids known as C. × parishii Davenport and C. × fibrillosa (Davenport) Davenport ex Underwood, respectively. A third sterile diploid hybrid with <i>C. fendleri</i> has recently been discovered in central Arizona (M. D. Windham, unpublished).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cheilanthes covillei
|authority=Maxon
|rank=species
|parent rank=genus
|synonyms=Myriopteris covillei
|basionyms=
|family=Pteridaceae
|phenology=Sporulating late spring–fall.
|habitat=Rocky slopes, cliffs, and ledges, usually on igneous substrates
|elevation=100–2500 m
|distribution=Ariz.;Calif.;Nev.;Utah;Mexico in Baja California.
|reference=None
|publication title=Proc. Biol. Soc. Wash.
|publication year=1918
|special status=Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V2/V2_724.xml
|genus=Cheilanthes
|species=Cheilanthes covillei
}}<!--

-->[[Category:Treatment]][[Category:Cheilanthes]]