View source for Thuidium delicatulum

{{Treatment/ID
|accepted_name=Thuidium delicatulum
|accepted_authority=(Hedwig) Schimper in P. Bruch and W. P. Schimper
|publications={{Treatment/Publication
|title=in P. Bruch and W. P. Schimper, Bryol. Europ.
|place=5: 164. 1852
|year=1852
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Hypnum delicatulum
|authority=Hedwig
|rank=species
|publication_title=Sp. Musc. Frond.,
|publication_place=260. 1801
}}
|synonyms={{Treatment/ID/Synonym
|name=Thuidium recognitum var. delicatulum
|authority=(Hedwig) Warnstorf
|rank=variety
}}
|hierarchy=Thuidiaceae;Thuidium;Thuidium delicatulum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Thuidiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Thuidium]]</div><div class="higher-taxon"><small>species</small>[[Thuidium delicatulum]]</div></div>
|volume=Volume 28
|mention_page=page 380, 381
|treatment_page=page 382
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>green or yellowish brown. <b>Stems</b> 3–8 cm, 2- or 3-pinnate, ± frondose; paraphyllia usually papillose at cell ends. <b>Stem</b> leaves ± erect, appressed when dry, erect-spreading when moist, triangular-ovate, not plicate, 0.6–1.5 mm; margins revolute throughout, papillose-serrulate; apex acuminate; costa ending well before apex; distal laminal cells irregularly oblong-hexagonal or rhombic, 6–10 × 8–12 µm, papillae sometimes 2-fid, not appearing multipapillose. <b>Branch</b> leaves apical cell truncate, multipapillose. <b>Primary</b> branch leaves to 0.5 mm; costa 1/2–2/3 leaf length. <b>Secondary</b> branch leaves 0.3 mm; apex acute; costa to 1/2 leaf length. <b>Perichaetial</b> leaves to 5 mm, margins not ciliate to ciliate proximally, often denticulate distally. <b>Seta</b> 1.5–4.5 cm. <b>Capsule</b> 1.8–4 mm; operculum 0.7–2 mm, long-rostrate; endostome cilia in groups of 2 or 3. <b>Spores</b> 12–24 µm, smooth.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;Central America;n South America;Europe;Asia.
|discussion=<p>Varieties 10 (2 in the flora).</p><!--
--><p><i>Thuidium delicatulum</i>, if confused with <i>T. recognitum</i>, can be recognized by the stem leaves erect or erect-spreading when moist, not plicate and rather gradually acuminate, with margins recurved to the base of the acumen and costa ending well before the apex. The paraphyllia have small papillae along the cell midpoints. The laminal cells are stoutly 1-papillose, but often, especially in the South, the papillae are 2-fid. The branch leaf laminal cells are rhombic, 6–8 × 8–12 µm, with curved papillae. The operculum is long-rostrate.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Stem leaf apices not ending in hyaline point of 1-seriate cells; perichaetial leaf margins ciliate proximally.
|[[Thuidium delicatulum var. delicatulum|Thuidium delicatulum var. delicatulum]]
|-id=key-0-1
|1
|Stem leaf apices ending in hyaline point of 1-seriate cells; perichaetial leaf margins usually not ciliate, sometimes sparsely so.
|[[Thuidium delicatulum var. radicans|Thuidium delicatulum var. radicans]]
|}
</div></div><!--

-->{{#Taxon:
name=Thuidium delicatulum
|authority=(Hedwig) Schimper in P. Bruch and W. P. Schimper
|rank=species
|parent rank=genus
|synonyms=Thuidium recognitum var. delicatulum
|basionyms=Hypnum delicatulum
|family=Thuidiaceae
|distribution=North America;Mexico;Central America;n South America;Europe;Asia.
|reference=None
|publication title=in P. Bruch and W. P. Schimper, Bryol. Europ.
|publication year=1852
|special status=Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V28/V28_601.xml
|genus=Thuidium
|species=Thuidium delicatulum
}}<!--

-->[[Category:Treatment]][[Category:Thuidium]]