View source for Mesadenus

{{Treatment/ID
|accepted_name=Mesadenus
|accepted_authority=Schlechter
|publications={{Treatment/Publication
|title=Beih. Bot. Centralbl.
|place=37: 367. 1920
|year=1920
}}
|basionyms=
|synonyms=
|hierarchy=Orchidaceae;Orchidaceae subfam. Orchidoideae;Orchidaceae tribe Cranichideae;Orchidaceae (tribe Cranichideae) subtribe Spiranthinae;Mesadenus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orchidaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Orchidaceae subfam. Orchidoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Orchidaceae tribe Cranichideae]]</div><div class="higher-taxon"><small>subtribe</small>[[Orchidaceae (tribe Cranichideae) subtribe Spiranthinae]]</div><div class="higher-taxon"><small>genus</small>[[Mesadenus]]</div></div>
|etymology=Greek (Latinized) meso, middle, and aden, gland
|volume=Volume 26
|mention_page=page 498
|treatment_page=page 525
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form or habitat;whole_organism architecture;whole_organism growth form"><b>Herbs,</b> terrestrial, sympodial.</span> <span class="statement" id="st-d0_s1" data-properties="root architecture or arrangement;root texture;root pubescence"><b>Roots </b>fasciculate, fleshy, villous.</span> <span class="statement" id="st-d0_s2" data-properties="stem orientation;stem architecture;stem height or length or size"><b>Stems </b>erect, rhizomatous, short.</span> <span class="statement" id="st-d0_s3" data-properties="leaf quantity;basal leaf architecture"><b>Leaves </b>several, basal, petiolate;</span> <span class="statement" id="st-d0_s4" data-properties="blade architecture;blade shape or vernation;margin architecture or shape">blade not articulate, involute when immature, margins entire.</span> <span class="statement" id="st-d0_s5" data-properties="inflorescence position or structure subtype;inflorescence orientation;inflorescence architecture;inflorescence size;raceme architecture"><b>Inflorescences </b>terminal, laxly to densely flowered racemes, erect, scapose, slender.</span> <span class="statement" id="st-d0_s6" data-properties="flower orientation"><b>Flowers </b>resupinate;</span> <span class="statement" id="st-d0_s7" data-properties="perianth part fusion;apex orientation">perianth parts partially connate, apices spreading to recurved;</span> <span class="statement" id="st-d0_s8" data-properties="sepal arrangement">sepals subsimilar, subparallel;</span> <span class="statement" id="st-d0_s9" data-properties="dorsal sepal fusion">dorsal sepal adherent to base of column;</span> <span class="statement" id="st-d0_s10" data-properties="lateral sepal fixation">lateral sepals attached to column-foot;</span> <span class="statement" id="st-d0_s11" data-properties="petal fusion;petal shape">petals adnate to dorsal sepal, falcate;</span> <span class="statement" id="st-d0_s12" data-properties="lip shape;lip shape">lip auriculate, canaliculate;</span> <span class="statement" id="st-d0_s13" data-properties="column course or shape;column-foot presence;clinandrium shape">column arcuate, column-foot present, clinandrium inflated;</span> <span class="statement" id="st-d0_s14" data-properties="stigma quantity;stigma arrangement">stigmas 2, confluent;</span> <span class="statement" id="st-d0_s15" data-properties="rostellum size or width;rostellum shape">rostellum narrow, notched;</span> <span class="statement" id="st-d0_s16" data-properties="anther architecture;anther shape;anther course;anther orientation;rostellum life cycle;rostellum position relational">anther stalked, cordate, curved backward during anthesis, surpassing rostellum;</span> <span class="statement" id="st-d0_s17" data-properties="pollinium quantity;pollinium shape;pollinium pubescence or texture;pollinium pubescence or texture">pollinia 4, clavate, soft, mealy;</span> <span class="statement" id="st-d0_s18" data-properties="viscidium shape">viscidium ovate to subelliptic.</span> <span class="statement" id="st-d0_s19" data-properties="fruits capsule orientation;fruits capsule shape"><b>Fruits </b>capsules, erect, obliquely fusiform to ovoid.</span><!--

-->{{Treatment/Body
|distribution=Tropical and subtropical regions;North America;Mexico;West Indies;Central America;South America
|discussion=<p>Species 7 (1 in the flora).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Mesadenus
|author=James D. Ackerman
|authority=Schlechter
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=
|family=Orchidaceae
|distribution=Tropical and subtropical regions;North America;Mexico;West Indies;Central America;South America
|reference=None
|publication title=Beih. Bot. Centralbl.
|publication year=1920
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V26/V26_1071.xml
|subfamily=Orchidaceae subfam. Orchidoideae
|tribe=Orchidaceae tribe Cranichideae
|subtribe=Orchidaceae (tribe Cranichideae) subtribe Spiranthinae
|genus=Mesadenus
|anther architecture=stalked
|anther course=curved
|anther orientation=backward
|anther shape=cordate
|apex orientation=spreading;recurved
|basal leaf architecture=petiolate
|blade architecture=not articulate
|blade shape or vernation=involute
|clinandrium shape=inflated
|column course or shape=arcuate
|column-foot presence=absent
|dorsal sepal fusion=adherent
|flower orientation=resupinate
|fruits capsule orientation=erect
|fruits capsule shape=obliquely fusiform;ovoid
|inflorescence architecture=scapose
|inflorescence orientation=erect
|inflorescence position or structure subtype=terminal
|inflorescence size=slender
|lateral sepal fixation=attached
|leaf quantity=several
|lip shape=canaliculate;auriculate
|margin architecture or shape=entire
|perianth part fusion=connate
|petal fusion=adnate
|petal shape=falcate
|pollinium pubescence or texture=mealy;soft
|pollinium quantity=4
|pollinium shape=clavate
|raceme architecture=flowered
|root architecture or arrangement=fasciculate
|root pubescence=villous
|root texture=fleshy
|rostellum life cycle=anthesis
|rostellum position relational=surpassing
|rostellum shape=notched
|rostellum size or width=narrow
|sepal arrangement=subparallel
|stem architecture=rhizomatous
|stem height or length or size=short
|stem orientation=erect
|stigma arrangement=confluent
|stigma quantity=2
|viscidium shape=ovate;subelliptic
|whole_organism architecture=sympodial
|whole_organism growth form=herb
|whole_organism growth form or habitat=terrestrial
}}<!--

-->[[Category:Treatment]][[Category:Orchidaceae (tribe Cranichideae) subtribe Spiranthinae]]