View source for Chryso-hypnum diminutivum

{{Treatment/ID
|accepted_name=Chryso-hypnum diminutivum
|accepted_authority=(Hampe) W. R. Buck
|publications={{Treatment/Publication
|title=Brittonia
|place=36: 182. 1984
|year=1984
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Hypnum diminutivum
|authority=Hampe
|rank=species
|publication_title=Linnaea
|publication_place=20: 86. 1847
}}
|synonyms={{Treatment/ID/Synonym
|name=Ctenidium diminutivum
|authority=(Hampe) M. Fleischer
|rank=species
}} {{Treatment/ID/Synonym
|name=Microthamnium diminutivum
|authority=(Hampe) A. Jaeger
|rank=species
}} {{Treatment/ID/Synonym
|name=Mittenothamnium diminutivum
|authority=(Hampe) E. Britton
|rank=species
}} {{Treatment/ID/Synonym
|name=M. thelistegum
|authority=(Müller Hal.) Cardot
|rank=species
}}
|hierarchy=Hypnaceae;Chryso-hypnum;Chryso-hypnum diminutivum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hypnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Chryso-hypnum]]</div><div class="higher-taxon"><small>species</small>[[Chryso-hypnum diminutivum]]</div></div>
|volume=Volume 28
|mention_page=
|treatment_page=page 521
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem some measurement;branch architecture;branch height or length or size;branch shape;branch architecture"><b>Stems </b>4 cm, branches usually simple, short, blunt, densely foliate;</span> <span class="statement" id="st-d0_s1" data-properties="epidermal-cell size;wall width;larger quantity;larger position relational;thinner cell architecture;central strand size">epidermal-cells small, walls thick, in 2 or 3 rows, surrounding larger, thinner walled cells, central strand small;</span> <span class="statement" id="st-d0_s2" data-properties="">rhizoids along underside;</span> <span class="statement" id="st-d0_s3" data-properties="hair basal-cell quantity;distal cell quantity;distal cell height or length or size">axillary hair basal-cell 1, distal cell 1, relatively short.</span> <span class="statement" id="st-d0_s4" data-properties="leaf-stem distance"><b>Stem-</b>leaves 0.8–1.2 mm;</span> <span class="statement" id="st-d0_s5" data-properties="apex shape">apex gradually and narrowly acuminate;</span> <span class="statement" id="st-d0_s6" data-properties="costa size;leaf quantity">costa unequal, one fork often ending 1/3–1/2 leaf length;</span> <span class="statement" id="st-d0_s7" data-properties="row quantity">alar cells in 6–12 rows in extreme basal angles;</span> <span class="statement" id="st-d0_s8" data-properties="laminal cell arrangement or course or shape;wall texture">laminal cells linear to oblong-linear, walls firm;</span> <span class="statement" id="st-d0_s9" data-properties="basal-cell height or length or size;basal-cell width">basal-cells shorter, broader.</span> <span class="statement" id="st-d0_s10" data-properties="branch leaf orientation;branch leaf arrangement;branch leaf shape;branch leaf shape;branch leaf some measurement"><b>Branch </b>leaves usually widespreading, sometimes more imbricate, lanceolate to ovatelanceolate, concave, 0.6–0.9 mm;</span> <span class="statement" id="st-d0_s11" data-properties="costa size;leaf quantity">costa unequal, one fork often ending 1/4–1/3 leaf length;</span> <span class="statement" id="st-d0_s12" data-properties="row quantity">alar cells in 4–10 rows in extreme basal angles.</span> <span class="statement" id="st-d0_s13" data-properties="perichaetial leaf some measurement;margin shape;margin architecture or shape;costa development;cell variability;laminal cell architecture or pubescence or relief;laminal cell architecture or pubescence or relief"><b>Perichaetial </b>leaves 0.7–1.4 mm, margins plane, sparsely serrulate, costa often well developed, sometimes ecostate, alar cells not differentiated, laminal cells smooth or low-prorulose at distal ends abaxially.</span> <span class="statement" id="st-d0_s14" data-properties="seta architecture"><b>Seta </b>twisted.</span> <span class="statement" id="st-d0_s15" data-properties="capsule some measurement;neck variability"><b>Capsule </b>0.7–1.1 mm, neck usually differentiated;</span> <span class="statement" id="st-d0_s16" data-properties="exothecial cell shape;wall orientation;wall texture;cross-wall width;cross-wall shape">exothecial cells quadrate to short-rectangular, vertical walls firm, cross-walls thin and wavy;</span> <span class="statement" id="st-d0_s17" data-properties="annulus architecture or arrangement;annulus life cycle;cell shape;wall width">annulus 1–3-seriate, falling early, cells elongate, walls thick;</span> <span class="statement" id="st-d0_s18" data-properties="exostome tooth architecture;exostome tooth architecture;internal surface architecture">exostome teeth shouldered, bordered, internal surface trabeculate;</span> <span class="statement" id="st-d0_s19" data-properties="basal membrane relief;basal membrane relief;segment relief;segment architecture;cilium relief">endostome basal membrane smooth or obscurely roughened, segments finely papillose, perforate, cilia finely papillose.</span> <span class="statement" id="st-d0_s20" data-properties="spore some measurement"><b>Spores </b>11–19 µm.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature winter.
|habitat=Dead wood, mesic forests
|elevation=low elevations (0-100 m)
|distribution=Ala.;Fla.;Ga.;Mexico;West Indies;Central America;n;c South America
|discussion=<p>Chryso-hypnum diminutivum is distinguished by often dense, soft mats of smallish, prostrate, subcomplanate-foliate stems with ovate leaves whose laminal cells are prorulose at both ends; the plants are common lowland weeds. The species is extremely common throughout the West Indies and northern South America at all but the highest elevations, but barely makes it into North America. The species is widespread in tropical America, with many synonyms.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Chryso-hypnum diminutivum
|authority=(Hampe) W. R. Buck
|rank=species
|parent rank=genus
|synonyms=Ctenidium diminutivum;Microthamnium diminutivum;Mittenothamnium diminutivum;M. thelistegum
|basionyms=Hypnum diminutivum
|family=Hypnaceae
|phenology=Capsules mature winter.
|habitat=Dead wood, mesic forests
|elevation=low elevations (0-100 m)
|distribution=Ala.;Fla.;Ga.;Mexico;West Indies;Central America;n;c South America
|reference=None
|publication title=Brittonia
|publication year=1984
|special status=Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V28/V28_807.xml
|genus=Chryso-hypnum
|species=Chryso-hypnum diminutivum
|annulus architecture or arrangement=1-3-seriate
|annulus life cycle=falling
|apex shape=acuminate
|basal membrane relief=roughened;smooth
|basal-cell height or length or size=shorter
|basal-cell width=broader
|branch architecture=foliate;simple
|branch height or length or size=short
|branch leaf arrangement=imbricate
|branch leaf orientation=widespreading
|branch leaf shape=concave;lanceolate;ovatelanceolate
|branch leaf some measurement=0.6mm;0.9mm
|branch shape=blunt
|capsule some measurement=0.7mm;1.1mm
|cell shape=elongate
|cell variability=differentiated
|central strand size=small
|cilium relief=papillose
|costa development=developed
|costa size=unequal;unequal
|cross-wall shape=wavy
|cross-wall width=thin
|distal cell height or length or size=short
|distal cell quantity=1
|epidermal-cell size=small
|exostome tooth architecture=bordered;shouldered
|exothecial cell shape=quadrate;short-rectangular
|hair basal-cell quantity=1
|internal surface architecture=trabeculate
|laminal cell architecture or pubescence or relief=low-prorulose;smooth
|laminal cell arrangement or course or shape=linear;oblong-linear
|larger position relational=surrounding
|larger quantity=2
|leaf quantity=1/4;1/3
|leaf-stem distance=0.8mm;1.2mm
|margin architecture or shape=serrulate
|margin shape=plane
|neck variability=differentiated
|perichaetial leaf some measurement=0.7mm;1.4mm
|row quantity=4;10
|segment architecture=perforate
|segment relief=papillose
|seta architecture=twisted
|spore some measurement=11um;19um
|stem some measurement=4
|thinner cell architecture=walled
|wall orientation=vertical
|wall texture=firm;firm
|wall width=thick;thick
}}<!--

-->[[Category:Treatment]][[Category:Chryso-hypnum]]