View source for Didymodon eckeliae

{{Treatment/ID
|accepted_name=Didymodon eckeliae
|accepted_authority=R. H. Zander
|publications={{Treatment/Publication
|title=Madroño
|place=48: 298, fig. 1. 2002,
}}
|basionyms=
|synonyms=
|hierarchy=Pottiaceae;Pottiaceae subfam. Barbuloideae;Didymodon;Didymodon eckeliae
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pottiaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Pottiaceae subfam. Barbuloideae]]</div><div class="higher-taxon"><small>genus</small>[[Didymodon]]</div><div class="higher-taxon"><small>species</small>[[Didymodon eckeliae]]</div></div>
|volume=Volume 27
|mention_page=page 540, 542
|treatment_page=page 552
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism coloration;whole_organism growth form"><b>Plants </b>dark green to tan.</span> <span class="statement" id="st-d0_s1" data-properties="stem some measurement;central strand presence"><b>Stems </b>to 1.5 cm, central strand present.</span> <span class="statement" id="st-d0_s2" data-properties="leaf-stem fixation or orientation;leaf-stem orientation;leaf-stem orientation;leaf-stem shape;leaf-stem architecture;leaf-stem architecture;leaf-stem distance;base variability;base shape;margin orientation;margin shape;margin architecture;margin shape;apex shape;apex shape;apex shape;apex fragility"><b>Stem-</b>leaves appressed and incurved when dry, patent to spreading-recurved and not keeled when moist, monomorphic, longlanceolate, grooved adaxially along the costa, especially near leaf apex, 2–3 mm, base scarcely differentiated or short-oblong, margins narrowly recurved in proximal 1/3–1/2 of leaf, often broadly crenate (ca. 8–10 cells across), sinuose or weakly notched in distal 2/3–3/4 of leaf, apex narrowly acute or narrowly blunt and long-acuminate, somewhat fragile;</span> <span class="statement" id="st-d0_s3" data-properties="costa architecture;costa architecture;costa architecture or shape;costa width;costa shape;adaxial pad quantity;costal adaxial cell shape;costal adaxial cell quantity;cell width;layer quantity">costa percurrent or short-excurrent, not strongly spurred, not much widened or tapering, lacking an adaxial pad of cells, adaxial costal cells quadrate, ca. 4 cells wide at mid leaf, guide cells in 2 layers;</span> <span class="statement" id="st-d0_s4" data-properties="basal laminal cell variability;wall width;wall shape;wall architecture">basal laminal cells very weakly differentiated medially, walls thin to weakly thickened, quadrate to shortrectangular, not perforated;</span> <span class="statement" id="st-d0_s5" data-properties="distal laminal cell width;distal laminal cell quantity;distal laminal cell quantity;distal laminal cell architecture or pubescence or relief;papilla architecture;papilla shape;papilla quantity;lumen shape;leaf margin architecture;row quantity">distal laminal cells 7–9 µm wide, 1: 1, nearly smooth or papillae simple or 2-fid, 2–3 per lumen, lumens roundedquadrate, walls thin or evenly thickened, weakly convex on both sides of lamina, distal 2/3–3/4 of the leaf margins 2-stratose with 1–2 rows of cells similar to the medial cells of the lamina.</span> <span class="statement" id="st-d0_s6" data-properties="leaf reproduction;leaf fragility"><b>Specialized </b>asexual reproduction apparently by fragile leaves.</span> <span class="statement" id="st-d0_s7" data-properties="wall width;wall width;wall shape;wall position or shape;wall quantity;wall development;wall reproduction;wall reproduction"><b>Sexual </b>condition apparently dioicous;</span> <span class="statement" id="st-d0_s8" data-properties="">perigonia not seen;</span> <span class="statement" id="st-d0_s9" data-properties="">perichaetial leaves little different from the cauline or with wider bases.</span> <span class="statement" id="st-d0_s10" data-properties="seta some measurement"><b>Seta </b>0.8–1.2 cm.</span> <span class="statement" id="st-d0_s11" data-properties="capsule some measurement"><b>Capsule </b>2–2.4 mm;</span> <span class="statement" id="st-d0_s12" data-properties="peristome tooth quantity;peristome tooth arrangement or course or shape;peristome tooth architecture;peristome tooth architecture;peristome tooth size or quantity;peristome tooth position or shape;peristome tooth structure in adjective form;peristome tooth coloration">peristome teeth 32, linear, weakly twisted or to 1/2 times, ca. 700–1000 µm. <b>Spores</b> 8–10 (–13) µm. <b>Distal</b> laminal KOH reaction yellow-red.</span><!--

-->{{Treatment/Body
|phenology=Sporophyte maturity undetermined.
|habitat=Trunk and bases of trees, soil over rock
|elevation=moderate elevations
|distribution=B.C.;Calif.;Europe (Spain)
|discussion=<p>Didymodon eckeliae is an uncommon species known from a few collections in southern and central California, and very recently in coastal British Columbia. F. Puche has collected it in Spain (Alicante, Font Rojas). It is closely related to D. vinealis, sharing the weakly differentiated leaf base, transverse section of the costa deeply convex, and the presence of a short, deep groove with the appearance of a long-elliptical window on the adaxial surface of the costa near the apex, but is immediately distinguished by distal leaf margins 2-stratose in a narrow band extending to the broadened base and often scalloped to weakly notched, at least in leaves of sterile plants. Didymodon vinealis may occasionally have distal leaf margins 2-stratose in small patches, but never evenly so (though sometimes, apparently, completely 2-stratose in distal portion of leaf); D. nicholsonii has a much broader, long-ovate leaf outline. Didymodon sinuosus (Mitten) Delongne of Europe is similar but its immature leaves have denticulate apices, and the distal marginal leaf cells are minutely crenulate (as in Trichostomum tenuirostre) and not 2-stratose.</p>
|tables=
|references=
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-->{{#Taxon:
name=Didymodon eckeliae
|authority=R. H. Zander
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Pottiaceae
|phenology=Sporophyte maturity undetermined.
|habitat=Trunk and bases of trees, soil over rock
|elevation=moderate elevations
|distribution=B.C.;Calif.;Europe (Spain)
|reference=None
|publication title=Madroño
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V27/V27_793.xml
|subfamily=Pottiaceae subfam. Barbuloideae
|genus=Didymodon
|species=Didymodon eckeliae
|adaxial pad quantity=lacking
|apex fragility=fragile
|apex shape=long-acuminate;blunt;acute
|basal laminal cell variability=differentiated
|base shape=short-oblong
|base variability=differentiated
|capsule some measurement=2mm;2.4mm
|cell width=wide
|central strand presence=absent
|costa architecture=short-excurrent;percurrent
|costa architecture or shape=spurred
|costa shape=tapering
|costa width=widened
|costal adaxial cell quantity=4
|costal adaxial cell shape=quadrate
|distal laminal cell architecture or pubescence or relief=smooth
|distal laminal cell quantity=1;1
|distal laminal cell width=7um;9um
|layer quantity=2
|leaf fragility=fragile
|leaf margin architecture=2-stratose
|leaf reproduction=asexual
|leaf-stem architecture=grooved;monomorphic
|leaf-stem distance=2mm;3mm
|leaf-stem fixation or orientation=appressed
|leaf-stem orientation=patent;spreading-recurved
|leaf-stem shape=keeled
|lumen shape=roundedquadrate
|margin architecture=sinuose
|margin orientation=recurved
|margin shape=notched;crenate
|papilla architecture=simple
|papilla quantity=2;3
|papilla shape=2-fid
|peristome tooth architecture=0-1/2 times 700-1000 um . spores;twisted
|peristome tooth arrangement or course or shape=linear
|peristome tooth coloration=yellow-red
|peristome tooth position or shape=distal
|peristome tooth quantity=32
|peristome tooth size or quantity=0-1/2 times 700-1000 um . spores
|peristome tooth structure in adjective form=laminal
|row quantity=1;2
|seta some measurement=0.8cm;1.2cm
|stem some measurement=0cm;1.5cm
|wall architecture=not perforated
|wall development=specialized
|wall position or shape=distal
|wall quantity=2/3;3/4
|wall reproduction=dioicous;sexual
|wall shape=convex;quadrate
|wall width=thickened;thin;thin;weakly thickened
|whole_organism coloration=dark green;tan
|whole_organism growth form=plant
}}<!--

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