View source for Leskea ← Leskea 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=Leskea |accepted_authority=Hedwig |publications={{Treatment/Publication |title=Sp. Musc. Frond., |place=211, plates 49 – 58, plate 59, figs. 1 – 5. 1801 |year=1801 }} |basionyms= |synonyms= |hierarchy=Leskeaceae;Leskea |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Leskeaceae]]</div><div class="higher-taxon"><small>genus</small>[[Leskea]]</div></div> |etymology=For Nathanael Gottfried Leske, 1751 – 1786, botanist of Lei p zig |volume=Volume 28 |mention_page=page 341, 342, 350, 379, 434, 475, 648 |treatment_page=page 349 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole_organism size;whole_organism coloration;whole_organism coloration;whole_organism coloration;whole_organism coloration;whole_organism coloration;whole_organism growth form"><b>Plants </b>small, in mats, pale green, dark green, or brownish.</span> <span class="statement" id="st-d0_s1" data-properties="stem architecture"><b>Stems </b>freely branched to subpinnate;</span> <span class="statement" id="st-d0_s2" data-properties="paraphyllium quantity;paraphyllium shape">paraphyllia few, linear-lanceolate, cells smooth;</span> <span class="statement" id="st-d0_s3" data-properties="cell architecture or pubescence or relief">sparsely radiculose.</span> <span class="statement" id="st-d0_s4" data-properties="stem variability;branch leaf variability"><b>Stem </b>and branch leaves similar or differentiated.</span> <span class="statement" id="st-d0_s5" data-properties="stem-leaf orientation;stem-leaf orientation;stem-leaf orientation;stem-leaf shape;stem-leaf shape;stem-leaf architecture or arrangement or shape or vernation;stem-leaf shape;stem-leaf shape;stem-leaf shape;stem-leaf shape"><b>Stem-</b>leaves erect or somewhat recurved when dry, erect-spreading when moist, oblong-ovate or ovatelanceolate, plicate on one side, 2-plicate, or plane;</span> <span class="statement" id="st-d0_s6" data-properties="margin shape;margin orientation;margin architecture;limbidium presence">margins plane or ± recurved proximally, entire to subserrulate distally, limbidium absent;</span> <span class="statement" id="st-d0_s7" data-properties="apex shape;apex shape;apex shape;apex shape;apex shape;hairpoint presence">apex acute, acuminate, or obtuse, hairpoint absent;</span> <span class="statement" id="st-d0_s8" data-properties="">costa single, subpercurrent or ending before apex, opaque, often flexuose-curved distally;</span> <span class="statement" id="st-d0_s9" data-properties="costa quantity;costa position;costa position;costa coloration;costa course;cell variability;cell shape">alar cells weakly differentiated, subquadrate;</span> <span class="statement" id="st-d0_s10" data-properties="medial and distal laminal cell shape;medial and distal laminal cell relief;surface position;wall width">medial and distal laminal cells irregularly quadrate-hexagonal, ± 1-papillose on abaxial or both surfaces, walls thick;</span> <span class="statement" id="st-d0_s11" data-properties="">apical cells ± quadrate except at very tip.</span> <span class="statement" id="st-d0_s12" data-properties=""><b>Specialized </b>asexual reproduction absent.</span> <span class="statement" id="st-d0_s13" data-properties="apical cell shape;apical cell development;apical cell reproduction;apical cell presence;apical cell reproduction;apical cell reproduction"><b>Sexual </b>condition autoicous;</span> <span class="statement" id="st-d0_s14" data-properties="perichaetial leaf coloration;perichaetial leaf orientation;perichaetial leaf shape;apex shape">perichaetial leaves pale-brown, erect, elongate, apex acuminate.</span> <span class="statement" id="st-d0_s15" data-properties="seta some measurement"><b>Seta </b>0.4–1.2 cm.</span> <span class="statement" id="st-d0_s16" data-properties="capsule orientation;capsule shape;capsule architecture or shape;capsule course"><b>Capsule </b>erect, cylindric to oblong-cylindric, symmetric to distinctly curved;</span> <span class="statement" id="st-d0_s17" data-properties="annulus size or width;annulus presence">annulus narrow or absent;</span> <span class="statement" id="st-d0_s18" data-properties="operculum shape">operculum conic;</span> <span class="statement" id="st-d0_s19" data-properties="peristome size">peristome reduced;</span> <span class="statement" id="st-d0_s20" data-properties="exostome tooth shape;exostome tooth pubescence;exostome tooth relief">exostome teeth linear-lanceolate, usually cross-striolate near base, sometimes densely papillose throughout;</span> <span class="statement" id="st-d0_s21" data-properties="basal membrane position;segment arrangement or course or shape;cilium presence;cilium prominence">endostome basal membrane low, segments long-linear, cilia absent or rudimentary.</span> <span class="statement" id="st-d0_s22" data-properties="spore some measurement;spore relief;spore relief"><b>Spores </b>9–18 µm, smooth to very finely papillose.</span><!-- -->{{Treatment/Body |distribution=North America;Central America;South America;Europe;Asia;Africa |discussion=<p>Species 24 (4 in the flora).</p><!-- --><p>Leskea occurs in terrestrial habitats in temperate, subtropical, and tropical regions. The leaves are somewhat asymmetric with proximal laminal cells somewhat longer than the more distal cells, which are obscure; the exostome teeth are incurved when dry; and the endostome is erect, pale, and papillose.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Branch leaves 0.2-0.5 mm; distal laminal cells 4-7 µm. |[[Leskea australis|Leskea australis]] |-id=key-0-1 |1 |Branch leaves 0.4-0.8 mm; distal laminal cells 6-11 µm |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Stem and branch leaves differentiated, stem leaves longer than broad; apices ± obliquely acuminate and subsecund; branches somewhat curved at apices; capsules subcylindric, curved. |[[Leskea polycarpa|Leskea polycarpa]] |-id=key-0-2 |2 |Stem and branch leaves similar, not much longer than broad; apices not oblique or subsecund; branches not curved at apices; capsules oblong-cylindric, straight or slightly curved |[[#key-0-3| > 3]] |-id=key-0-3 |3 |Branches ± tightly foliate; leaf apices acute or sometimes narrowly blunt; leaves ± 2-plicate; margins irregularly revolute proximally, especially when dry; endostome segments as long as exostome teeth; operculum ± pointed. |[[Leskea gracilescens|Leskea gracilescens]] |-id=key-0-3 |3 |Branches loosely foliate; leaf apices rounded-obtuse to sometimes acute or acuminate; leaves not plicate (stem leaves occasionally slightly plicate); margins not revolute; endostome segments less than 1/3 exostome teeth length; operculum blunt. |[[Leskea obscura|Leskea obscura]] |} </div></div><!-- -->{{#Taxon: name=Leskea |author=Paul L. Redfearn Jr. |authority=Hedwig |rank=genus |parent rank=family |synonyms= |basionyms= |family=Leskeaceae |distribution=North America;Central America;South America;Europe;Asia;Africa |reference=None |publication title=Sp. Musc. Frond., |publication year=1801 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V28/V28_543.xml |genus=Leskea |annulus presence=absent |annulus size or width=narrow |apex shape=acuminate;obtuse;acuminate;obtuse;acuminate;acute |apical cell development=specialized |apical cell presence=absent |apical cell reproduction=autoicous;sexual;asexual |apical cell shape=quadrate |basal membrane position=low |branch leaf variability=differentiated |capsule architecture or shape=symmetric |capsule course=curved |capsule orientation=erect |capsule shape=cylindric;oblong-cylindric |cell architecture or pubescence or relief=smooth |cell shape=subquadrate |cell variability=differentiated |cilium presence=absent |cilium prominence=rudimentary |costa coloration=opaque |costa course=flexuose-curved |costa position=ending before apex;subpercurrent |costa quantity=single |exostome tooth pubescence=cross-striolate |exostome tooth relief=papillose |exostome tooth shape=linear-lanceolate |hairpoint presence=absent |limbidium presence=absent |margin architecture=entire;subserrulate |margin orientation=recurved |margin shape=plane |medial and distal laminal cell relief=1-papillose |medial and distal laminal cell shape=quadrate-hexagonal |operculum shape=conic |paraphyllium quantity=few |paraphyllium shape=linear-lanceolate |perichaetial leaf coloration=pale-brown |perichaetial leaf orientation=erect |perichaetial leaf shape=elongate |peristome size=reduced |segment arrangement or course or shape=long-linear |seta some measurement=0.4cm;1.2cm |spore relief=papillose;smooth to very |spore some measurement=9um;18um |stem architecture=freely branched;subpinnate |stem variability=differentiated |stem-leaf architecture or arrangement or shape or vernation=plicate |stem-leaf orientation=erect-spreading;recurved;erect |stem-leaf shape=plane;2-plicate;plane;2-plicate;ovatelanceolate;oblong-ovate |surface position=abaxial |wall width=thick |whole_organism coloration=brownish;dark green;brownish;dark green;pale green |whole_organism growth form=plant |whole_organism size=small }}<!-- -->[[Category:Treatment]][[Category:Leskeaceae]] Templates used on this page: Template:Leskeaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Leskea.