View source for Crumia ← Crumia You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Crumia |accepted_authority=W. B. Schofield |publications={{Treatment/Publication |title=Canad. J. Bot. |place=44: 609, figs. 1–15. 1966 , }} |basionyms= |synonyms= |hierarchy=Pottiaceae;Pottiaceae subfam. Pottioideae;Crumia |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pottiaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Pottiaceae subfam. Pottioideae]]</div><div class="higher-taxon"><small>genus</small>[[Crumia]]</div></div> |etymology=For H. A. Crum, 1922–2002, American bryologist |volume=Volume 27 |mention_page=page 481, 484, 640 |treatment_page=page 639 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole_organism coloration;whole_organism growth form"><b>Plants </b>forming cushions, green to reddish distally, blackish green to iridescent tan proximally.</span> <span class="statement" id="st-d0_s1" data-properties="stem some measurement;stem architecture"><b>Stems </b>to 3 mm, branching often;</span> <span class="statement" id="st-d0_s2" data-properties="hyalodermi presence;scleroderm presence;central strand presence;central strand fragility">hyalodermis absent, sclerodermis absent, central strand absent or very weak;</span> <span class="statement" id="st-d0_s3" data-properties="axillary hair quantity;proximal cell quantity;cell coloration">axillary hairs ca. 6 cells in length, proximal 1–2 cells yellowish.</span> <span class="statement" id="st-d0_s4" data-properties=""><b>Leaves </b>appressed, weakly contorted when dry, spreading when moist;</span> <span class="statement" id="st-d0_s5" data-properties="leaf fixation or orientation;leaf arrangement or shape;leaf orientation;leaf shape;adaxial surface prominence or shape;adaxial surface shape;adaxial surface some measurement">spathulate, adaxial surface flat, shallowly channeled along costa, to 4 mm;</span> <span class="statement" id="st-d0_s6" data-properties="base shape;proximal margin architecture;row quantity;cell shape">base scarcely differentiated in shape, proximal margins bordered by a few rows of long-rectangular cells;</span> <span class="statement" id="st-d0_s7" data-properties="margin orientation;margin architecture or shape;margin architecture;margin quantity;row quantity;cell size;cell shape;cell shape">margins recurved along 1 or both margins in the proximal 1/2, entire, bordered by ca. 6 rows of enlarged, rounded rhomboid to rectangular cells, except the marginal row;</span> <span class="statement" id="st-d0_s8" data-properties="apex shape;apex architecture or shape">apex broadly acute to rounded-acute, usually broadly apiculate;</span> <span class="statement" id="st-d0_s9" data-properties="costa architecture;costa architecture;adaxial outgrowth presence;adaxial cell shape;row quantity;transverse-section arrangement or shape;adaxial epidermis presence;band presence;guide cell quantity;layer quantity;hydroid strand presence;band presence;band fragility;band arrangement or shape;abaxial epidermis development">costa percurrent or ending 1–2 cells below the apex, adaxial outgrowths absent, adaxial cells elongate in 5–6 rows, transverse-section semicircular, adaxial epidermis present, adaxial stereid band absent, guide cells 3–4 in 1 layer, hydroid strand absent, abaxial stereid band present, strong, semicircular in section, abaxial epidermis weakly developed;</span> <span class="statement" id="st-d0_s10" data-properties="basal-cell variability;basal-cell shape;basal-cell width;basal-cell quantity;basal-cell quantity;wall width;wall coloration">basal-cells differentiated medially, inflated-rectangular, slightly wider than the distal cells, 3–5: 1, walls of basal-cells thin, brown;</span> <span class="statement" id="st-d0_s11" data-properties="distal medial cell shape;distal medial cell width;distal medial cell quantity;distal medial cell quantity;distal medial cell architecture">distal medial cells hexagonal to shortly rectangular, 13–20 µm wide, 1–2: 1, 1-stratose;</span> <span class="statement" id="st-d0_s12" data-properties="distal medial cell shape;distal medial cell width;distal medial cell quantity;papilla size;papilla architecture;papilla shape;papilla quantity;papilla arrangement">papillae small, simple to 2-fid, 8–12 per lumen, scattered, cell-walls thin, weakly convex on both sides.</span> <span class="statement" id="st-d0_s13" data-properties=""><b>Specialized </b>asexual reproduction absent.</span> <span class="statement" id="st-d0_s14" data-properties="cell-wall width;cell-wall shape;cell-wall development;cell-wall reproduction;cell-wall presence;cell-wall reproduction;cell-wall reproduction"><b>Sexual </b>condition dioicous.</span> <span class="statement" id="st-d0_s15" data-properties="perichaetium position or structure subtype;interior leaf architecture or shape"><b>Perichaetia </b>terminal, interior leaves not sheathing, little different from cauline leaves.</span> <span class="statement" id="st-d0_s16" data-properties="seta some measurement"><b>Seta </b>ca. 1.4 mm.</span> <span class="statement" id="st-d0_s17" data-properties="capsule dehiscence;theca shape;theca some measurement;row quantity;cell architecture"><b>Capsule </b>stegocarpous, theca cylindric, 2.5–3 mm, annulus of ca. 2 rows vesiculose cells;</span> <span class="statement" id="st-d0_s18" data-properties="operculum shape;operculum some measurement">operculum conic, 0.8–1.1 mm;</span> <span class="statement" id="st-d0_s19" data-properties="peristome tooth quantity;peristome tooth architecture or shape;peristome tooth arrangement or course or shape;branch quantity;ramus architecture;ramus architecture;ramus architecture;tooth some measurement;calyptra shape">peristome teeth 16, cleft to near base into two branches, linear, rami much perforated and anastomosing, twisted very weakly counterclockwise, teeth ca. 200 µm. <b>Calyptra</b> cucullate.</span> <span class="statement" id="st-d0_s20" data-properties="spore some measurement;spore coloration;spore coloration"><b>Spores </b>ca. 15–18 µm. <b>Laminal</b> KOH color reaction reddish orange.</span><!-- -->{{Treatment/Body |distribution=w North America |discussion=<p>Species 1.</p><!-- --><p>Crumia is a robust moss similar to Scopelophila in the often black or deep brown coloration of the plants, the lack of either a sclerodermis or a hyalodermis in the stem, the spathulate leaf shape and single costal stereid band, but differs in the presence of a stem central strand (though small or occasionally absent), a more strongly differentiated, intramarginal leaf border, and presence of a peristome (though rarely fruiting). Hennediella has bordered leaves but is red in KOH, not reddish orange, and has plane leaf margins with marginal cells not larger than the medial as seen in section. A second species, Crumia deciduidentata, was referred to Tortula by R. H. Zander (1993) on the basis of differences in the peristome, the awned perichaetial leaves, strong stem central strand, and presence of a hydroid strand in the costa.</p> |tables= |references= }}<!-- --><!-- -->{{#Taxon: name=Crumia |author=Richard H. Zander |authority=W. B. Schofield |rank=genus |parent rank=subfamily |synonyms= |basionyms= |family=Pottiaceae |distribution=w North America |reference=None |publication title=Canad. J. Bot. |publication year= |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V27/V27_945.xml |subfamily=Pottiaceae subfam. Pottioideae |genus=Crumia |abaxial epidermis development=developed |adaxial cell shape=elongate |adaxial epidermis presence=absent |adaxial outgrowth presence=absent |adaxial surface prominence or shape=flat |adaxial surface shape=channeled |adaxial surface some measurement=0mm;4mm |apex architecture or shape=apiculate |apex shape=broadly acute;rounded-acute |axillary hair quantity=6 |band arrangement or shape=semicircular |band fragility=strong |band presence=absent;absent |basal-cell quantity=1;3;5 |basal-cell shape=inflated-rectangular |basal-cell variability=differentiated |basal-cell width=slightly wider |base shape=differentiated |branch quantity=2 |calyptra shape=cucullate |capsule dehiscence=stegocarpous |cell architecture=vesiculose |cell coloration=yellowish |cell shape=rhomboid;rectangular |cell size=enlarged |cell-wall development=specialized |cell-wall presence=absent |cell-wall reproduction=dioicous;sexual;asexual |cell-wall shape=convex |cell-wall width=thin |central strand fragility=weak |central strand presence=absent |costa architecture=ending 1-2 cells;percurrent |distal medial cell architecture=1-stratose |distal medial cell quantity=1;2 |distal medial cell shape=hexagonal;shortly rectangular |distal medial cell width=13um;20um |guide cell quantity=3;4 |hyalodermi presence=absent |hydroid strand presence=absent |interior leaf architecture or shape=not sheathing |layer quantity=1 |leaf arrangement or shape=contorted |leaf fixation or orientation=appressed |leaf orientation=spreading |leaf shape=spathulate |margin architecture=bordered |margin architecture or shape=entire |margin orientation=recurved |margin quantity=1 |operculum shape=conic |operculum some measurement=0.8mm;1.1mm |papilla architecture=simple |papilla arrangement=scattered |papilla quantity=8;12 |papilla shape=2-fid |papilla size=small |perichaetium position or structure subtype=terminal |peristome tooth architecture or shape=cleft |peristome tooth arrangement or course or shape=linear |peristome tooth quantity=16 |proximal cell quantity=1;2 |proximal margin architecture=bordered |ramus architecture=twisted;anastomosing;perforated |row quantity=2;5;6 |scleroderm presence=absent |seta some measurement=1.4 |spore coloration=reddish orange;laminal |spore some measurement=15um;18um |stem architecture=branching |stem some measurement=0mm;3mm |theca shape=cylindric |theca some measurement=2.5mm;3mm |tooth some measurement=200 |transverse-section arrangement or shape=semicircular |wall coloration=brown |wall width=thin |whole_organism coloration=green;reddish distally |whole_organism growth form=plant }}<!-- -->[[Category:Treatment]][[Category:Pottiaceae subfam. 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