View source for Pecluma

{{Treatment/ID
|accepted_name=Pecluma
|accepted_authority=M. G. Price
|publications={{Treatment/Publication
|title=Amer. Fern J.
|place=73: 109. 1983
|year=1983
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Polypodium subg. Pectinatum
|authority=Lellinger
}}
|hierarchy=Polypodiaceae;Pecluma
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polypodiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pecluma]]</div></div>
|etymology=Latin pectinatus, in the form of a comb, and plumula, feathery, for the leaf blades
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>terrestrial, on rock, or epiphytic. <b>Stems</b> short-creeping, unbranched, 4–8 mm diam., not whitish pruinose; scales concolored, ovate to linear-lanceolate, not clathrate, glabrous or pubescent, margins entire. <b>Leaves</b> monomorphic, crowded, narrowed toward tip, to 90 cm. <b>Petiole</b> dark brown to black, round in cross section except for narrow lateral ridge decurrent from base of blade. <b>Blade</b> narrowly oblong to linear, usually pectinate, with more than (20–)25 pairs of segments, not glaucous, pubescent, scales absent or on midrib only; rachis scaly and/or pubescent or glabrous abaxially, pubescent adaxially, scales basally attached and linear to cordate. <b>Segments</b> usually linear, 1.5–5(–8) mm wide, adnate to costa, closely spaced, margins entire, apex acute. <b>Veins</b> 1–2-forked [simple], occasionally anastomosing. <b>Sori</b> terminal on veins, round; indument of branched glandular hairs. <b>Spores</b> tuberculate. <b>x</b> = 37.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;West Indies;Central America;South America.
|discussion=<p>Within Polypodiaceae, <i>Pecluma</i> is distinctive in its short-creeping stems, pectinate blades (usually with more than 30 pairs of segments), and ungrooved, adaxially pubescent rachises.</p><!--
--><p>Many species of <i>Pecluma</i> are well adapted to dry seasons. As the leaves dry out, the segments curl inwardly, presumably retarding moisture loss. After rains, the segments uncurl, apparently undamaged by the period of dryness.</p><!--
--><p>Species ca. 30 (3 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=evans1969a
|text=Evans, A. M. 1969. Interspecific relationships in the Polypodium pectinatum-plumula complex. Ann. Missouri Bot. Gard. 55: 193--293.
}}{{Treatment/Reference
|id=price1983a
|text=Price, M. G. 1983. Pecluma, a new tropical American fern genus. Amer. Fern J. 73: 109--116.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Plants terrestrial or on logs or tree bases; segments at base of blade gradually reduced to auricles; petiole scales threadlike and inconspicuous or absent; veins 2–3-forked.
|[[Pecluma ptilodon var. caespitosa|Pecluma ptilodon var. caespitosa]]
|-id=key-0-1
|1
|Plants epiphytic or on rock; segments at base of blade abruptly reduced, or base narrowed to truncate; petiole scales cordate and appearing inflated or hastate and flat; veins 1–2-forked.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Leaves linear-elliptic; segments linear, proximal segments not deflexed, reduced abruptly to mere lobes; petiole scales cordate and appearing inflated; veins 1-forked; spores 64 per sporangium.
|[[Pecluma plumula|Pecluma plumula]]
|-id=key-0-2
|2
|Leaves narrowly ovate; segments narrowly ovate to linear, proximal segments deflexed, occasionally reduced to auricles; petiole scales hastate, flat; veins 2-forked; spores 32 per sporangium.
|[[Pecluma dispersa|Pecluma dispersa]]
|}
</div></div><!--

-->{{#Taxon:
name=Pecluma
|author=A. Murray Evans
|authority=M. G. Price
|rank=genus
|parent rank=family
|synonyms=Polypodium subg. Pectinatum
|basionyms=
|family=Polypodiaceae
|distribution=North America;Mexico;West Indies;Central America;South America.
|reference=evans1969a;price1983a
|publication title=Amer. Fern J.
|publication year=1983
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V2/V2_801.xml
|genus=Pecluma
}}<!--

-->[[Category:Treatment]][[Category:Polypodiaceae]]