View source for Dichelyma uncinatum

{{Treatment/ID
|accepted_name=Dichelyma uncinatum
|accepted_authority=Mitten
|publications={{Treatment/Publication
|title=J. Linn. Soc., Bot.
|place=8: 44, plate 8 [upper left]. 1864
|year=1864
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Dichelyma cylindricarpum
|authority=Austin
|rank=species
}} {{Treatment/ID/Synonym
|name=D. falcatum var. uncinatum
|authority=(Mitten) E. Lawton
|rank=variety
}} {{Treatment/ID/Synonym
|name=D. uncinatum var. cylindricarpum
|authority=(Austin) Cardot
|rank=variety
}}
|hierarchy=Fontinalaceae;Dichelyma;Dichelyma uncinatum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Fontinalaceae]]</div><div class="higher-taxon"><small>genus</small>[[Dichelyma]]</div><div class="higher-taxon"><small>species</small>[[Dichelyma uncinatum]]</div></div>
|volume=Volume 28
|mention_page=page 492
|treatment_page=page 493
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>to 12 cm, green to yellowish, brownish at base. <b>Stems</b> with axillary hairs 180–220 µm, basal cell 1, quadrate, distal cells 3 or 4, long-cylindric. <b>Leaves</b> weakly 3-ranked, strongly falcate to circinate at stem and branch apices, linear-lanceolate, 4–5 mm, medial stem leaves 0.4–0.8 mm wide; margins plane, entire; apex filiform-acuminate; costa long-excurrent; alar cells not or slightly enlarged; medial laminal cells 60–110 × 4–8 µm. <b>Perichaetia</b> with leaves not or rarely overtopping capsule. <b>Seta</b> 4–12(–20) mm. <b>Capsule</b> emergent or short-exserted, oblong-cylindric to cylindric, 1–3 mm; operculum conic, 1–1.5 mm; exostome teeth spiculose-papillose; endostome yellowish brown to orange-red, spiculose-papillose, trellis perfect. <b>Calyptra</b> 3–5 mm. <b>Spores</b> 10–17 µm.</span><!--

-->{{Treatment/Body
|habitat=Tree trunks and branches (Acer, Alnus, Populus, Quercus, Salix, Toxicodendron), roots, shrubs, rock, swamps, bottom forests, flood plains, pond margins, frequently submerged
|elevation=low to moderate elevations (0-1100 m)
|distribution=B.C.;Ont.;Alaska;Calif.;Idaho;Mont.;Oreg.;Wash.;Wyo.
|discussion=<p><i>Dichelyma uncinatum</i> is corticolous (rarely on rock), and is distinguished by its strongly falcate to circinate leaves at stem and branch apices. <i>Dichelyma capillaceum</i> is similar to <i>D. uncinatum</i> in size, and both species have slender, linear-lanceolate leaves with setaceous apices and long-excurrent costae; in <i>D. capillaceum</i> the leaves at stem and branch apices are erect-spreading to flexuose-spreading and somewhat longer, the capsules are immersed or laterally emergent, and the endostomial trellises are incomplete. <i>Dichelyma</i> falcata has been confused with <i>D. uncinatum</i> because it sometimes has excurrent costae; however, <i>D. falcatum</i> is usually saxicolous and has much broader leaves (0.7–1.4 versus 0.4–0.8 mm wide) that are flexuose-spreading to falcate at the stem and branch apices. The remarkable record of <i>D. uncinatum</i> from southeastern Ontario (Parry Sound District, R. Ireland 22206 MO, NY) occurred mixed with a collection of <i>D. falcatum</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Dichelyma uncinatum
|authority=Mitten
|rank=species
|parent rank=genus
|synonyms=Dichelyma cylindricarpum;D. falcatum var. uncinatum;D. uncinatum var. cylindricarpum
|basionyms=
|family=Fontinalaceae
|habitat=Tree trunks and branches (Acer, Alnus, Populus, Quercus, Salix, Toxicodendron), roots, shrubs, rock, swamps, bottom forests, flood plains, pond margins, frequently submerged
|elevation=low to moderate elevations (0-1100 m)
|distribution=B.C.;Ont.;Alaska;Calif.;Idaho;Mont.;Oreg.;Wash.;Wyo.
|reference=None
|publication title=J. Linn. Soc., Bot.
|publication year=1864
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V28/V28_768.xml
|genus=Dichelyma
|species=Dichelyma uncinatum
}}<!--

-->[[Category:Treatment]][[Category:Dichelyma]]