View source for Poa sect. Dioicopoa

{{Treatment/ID
|accepted_name=Poa sect. Dioicopoa
|accepted_authority=E. Desv.
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Poa;Poa subg. Poa;Poa sect. Dioicopoa
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Poeae]]</div><div class="higher-taxon"><small>genus</small>[[Poa]]</div><div class="higher-taxon"><small>subgenus</small>[[Poa subg. Poa]]</div><div class="higher-taxon"><small>section</small>[[Poa sect. Dioicopoa]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; usually rhizomatous, sometimes tufted or with solitary shoots. <b>Basal</b> branching intra- and extravaginal. <b>Culms</b> 20-85 cm, terete or weakly compressed. <b>Sheaths</b> closed firmly for 1/7 -1/3 their length, sometimes for a longer distance by a hyaline membrane, terete; ligules 1-4 mm (North America); innovation blades sparsely to densely scabrous, mainly over the veins; cauline blades flat or folded, rarely involute, abaxial and adaxial surfaces smooth or sparsely finely scabrous, glabrous, apices narrowly to broadly prow-shaped. <b>Panicles</b> 3-12(18) cm (North America), contracted or infrequently open, congested, branches erect to slightly ascending. <b>Spikelets</b> laterally compressed, sexually dimorphic, not bulbiferous (North America), of different sexes, slightly differentiated in floret number and lemma length, and sharply differentiated in vestiture development; florets normal. <b>Glumes</b> shorter than the adjacent lemmas, distinctly keeled, keels scabrous; lower glumes 1-3-veined; calluses terete or slightly laterally compressed, those of staminate plants often glabrous, those of pistillate plants usually copiously pubescent, hairs arising as a single dorsal tuft and as single tufts from below the marginal veins, long-plicate or rarely closely crimped hairs or a crown of long hairs (in South America); lemmas distinctly keeled, those of pistillate plants pubescent (North America), usually the keels and marginal veins long-villous; paleas scabrous, glabrous, or medially softly puberulent to long-villous over the keels; anthers 3, vestigial (0.1-0.2 mm) or 1.6-2.7 mm.</span><!--

-->{{Treatment/Body
|discussion=<p><i>Poa </i>sect.<i> Dioicopoa</i> includes 29 species; all except the North American <i>P. arachnifera</i> are native to South America. The above description applies to the North American species. They are strictly dioecious. All appear to reproduce sexually; a few species are also bulbiferous. Many, including <i>P. arachnifera</i>, are characterized by having 3 well-developed webs on the calluses of the pistillate florets.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Poa sect. Dioicopoa
|authority=E. Desv.
|rank=section
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Poaceae
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V24/V24_791.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Poeae
|genus=Poa
|subgenus=Poa subg. Poa
|section=Poa sect. Dioicopoa
}}<!--

-->[[Category:Treatment]][[Category:Poa subg. Poa]]