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
}}{{Treatment/ID/Synonym
|name=D. falcatum var. uncinatum
|authority=(Mitten) E. Lawton
}}{{Treatment/ID/Synonym
|name=D. uncinatum var. cylindricarpum
|authority=(Austin) Cardot
}}
|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>Dichelyma uncinatum is corticolous (rarely on rock), and is distinguished by its strongly falcate to circinate leaves at stem and branch apices. Dichelyma capillaceum is similar to D. uncinatum in size, and both species have slender, linear-lanceolate leaves with setaceous apices and long-excurrent costae; in D. capillaceum 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. Dichelyma falcata has been confused with D. uncinatum because it sometimes has excurrent costae; however, D. falcatum 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 D. uncinatum from southeastern Ontario (Parry Sound District, R. Ireland 22206 MO, NY) occurred mixed with a collection of D. falcatum.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Dichelyma uncinatum
|author=
|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://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V28/V28_768.xml
|genus=Dichelyma
|species=Dichelyma uncinatum
}}<!--

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