View source for Axonopus ← Axonopus 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=Axonopus |accepted_authority=P. Beauv. |publications= |basionyms= |synonyms= |hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Axonopus |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Panicoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Paniceae]]</div><div class="higher-taxon"><small>genus</small>[[Axonopus]]</div></div> |volume=Volume 25 |mention_page= |treatment_page=page 565 }}<!-- --><span class="statement" id="st-d0_s0" data-properties=""><b>Plants </b>perennial, rarely annual;</span> <span class="statement" id="st-d0_s1" data-properties="whole_organism duration;whole_organism duration;whole_organism growth form;whole_organism arrangement or pubescence;whole_organism growth form;whole_organism architecture;whole_organism architecture;whole_organism growth form">cespitose, loosely tufted, or mat-forming, sometimes rhizomatous or stoloniferous.</span> <span class="statement" id="st-d0_s2" data-properties="culm some measurement;culm texture;culm growth form or orientation;culm orientation"><b>Culms </b>7-300 cm, not woody, often decumbent at the base, erect to ascending.</span> <span class="statement" id="st-d0_s3" data-properties="sheath architecture"><b>Sheaths </b>open;</span> <span class="statement" id="st-d0_s4" data-properties="ligule texture;ligule architecture or shape;ligule architecture or pubescence or shape">ligules membranous, truncate, ciliate;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade shape;blade shape">blades flat or convolute, usually obtuse.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence position or structure subtype;inflorescence position;branch arrangement;branch shape"><b>Inflorescences </b>terminal, sometimes also axillary, panicles of 2-many, digitately, subdigitately, or racemosely arranged spikelike branches;</span> <span class="statement" id="st-d0_s7" data-properties="branch shape;spikelet architecture;spikelet architecture;spikelet architecture or arrangement or growth form;row quantity">branches triquetrous, spikelets subsessile or sessile, solitary, in 2 rows, lower lemmas appressed to the branch axes;</span> <span class="statement" id="st-d0_s8" data-properties="lower lemma fixation or orientation">disarticulation below the glumes.</span> <span class="statement" id="st-d0_s9" data-properties="spikelet shape;floret quantity"><b>Spikelets </b>dorsally compressed, with 2 florets;</span> <span class="statement" id="st-d0_s10" data-properties="lower floret reproduction;lower floret architecture">lower florets sterile or staminate;</span> <span class="statement" id="st-d0_s11" data-properties="upper floret architecture;upper floret reproduction">upper florets sessile, bisexual.</span> <span class="statement" id="st-d0_s12" data-properties="lower glume presence"><b>Lower </b>glumes absent;</span> <span class="statement" id="st-d0_s13" data-properties="upper glume variability;upper glume texture;upper lower lemma variability;upper lower lemma texture">upper glumes and lower lemmas equal, membranous;</span> <span class="statement" id="st-d0_s14" data-properties="lower palea presence">lower paleas absent;</span> <span class="statement" id="st-d0_s15" data-properties="upper lemma texture;upper lemma pubescence;margin shape or vernation;paleum architecture or fixation;apex shape">upper lemmas indurate, usually glabrous, sometimes with an apical tuft of hairs, margins slightly involute, clasping the palea, apices acute to obtuse;</span> <span class="statement" id="st-d0_s16" data-properties="">upper paleas similar to the upper lemmas in texture.</span> <span class="statement" id="st-d0_s17" data-properties="caryopsis shape;x chromosome quantity"><b>Caryopses </b>ellipsoid, x = 10.</span><!-- -->{{Treatment/Body |distribution=Puerto Rico;Md.;Del.;Miss.;Tex.;La.;Calif.;Virgin Islands;Ala.;N.C.;S.C.;Va.;Ark.;Pacific Islands (Hawaii);Ga.;Okla.;Fla. |discussion=<p>Axonopus is a genus of approximately 100 tropical and subtropical species, most of which are native to the Western Hemisphere. Three species are native to the Flora region; one additional species has been grown experimentally in Florida.</p><!-- --><p>All the species tend to grow in open habitats, often where the soil is somewhat impermeable and slightly flooded in the rainy season. Axonopus fissifolius and A. compressus are cultivated for forage in many countries; A. compressus is also used as a lawn grass. Both species are inclined to be weedy. The presence of rhizomes or stolons is affected by environmental condi¬tions, with plants growing in crowded conditions, e.g., lawns, rarely producing them.</p> |tables= |references={{Treatment/Reference |id=black1963a |text=Black, G.A. 1963. Grasses of the genus Axonopus (a taxonomic treatment) (ed. L.B. Smith). Advancing Frontiers PI Sci. 5:1-186. }} }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Panicles with 30-100+ branches; lower branches 10-24 cm long; culms (50)100-300 cm tall |[[Axonopus scoparius|Axonopus scoparius]] |-id=key-0-1 |1 |Panicles with 2-7 branches; lower branches 1-15 cm long; culms 7-100 cm tall. |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Spikelets 3.5-5.5 mm long; upper glumes glabrous; lower lemmas glabrous or sparsely pilose over the veins |[[Axonopus furcatus|Axonopus furcatus]] |-id=key-0-2 |2 |Spikelets 1.6-3.5 mm long; upper glumes and lower lemmas sparsely pilose on the margins or marginal veins. |[[#key-0-3| > 3]] |-id=key-0-3 |3 |Upper glumes and lower lemmas extending beyond the upper florets, forming acute to acuminate apices; blades 3-20 mm wide |[[Axonopus compressus|Axonopus compressus]] |-id=key-0-3 |3 |Upper glumes and lower lemmas not or scarcely extending beyond the upper florets, forming obtuse to subacute apices; blades 1.5-6 mm wide |[[Axonopus fissifolius|Axonopus fissifolius]] |} </div></div><!-- -->{{#Taxon: name=Axonopus |author=Mary E. Barkworth; |authority=P. Beauv. |rank=genus |parent rank=tribe |synonyms= |basionyms= |family=Poaceae |distribution=Puerto Rico;Md.;Del.;Miss.;Tex.;La.;Calif.;Virgin Islands;Ala.;N.C.;S.C.;Va.;Ark.;Pacific Islands (Hawaii);Ga.;Okla.;Fla. |reference=black1963a |publication title= |publication year= |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25_1436.xml |subfamily=Poaceae subfam. Panicoideae |tribe=Poaceae tribe Paniceae |genus=Axonopus |apex shape=acute;obtuse |blade shape=obtuse;convolute;flat |branch arrangement=arranged |branch shape=triquetrous;spikelike |caryopsis shape=ellipsoid |culm growth form or orientation=decumbent |culm orientation=erect;ascending |culm some measurement=7cm;300cm |culm texture=not woody |floret quantity=2 |inflorescence position=axillary |inflorescence position or structure subtype=terminal |ligule architecture or pubescence or shape=ciliate |ligule architecture or shape=truncate |ligule texture=membranous |lower floret architecture=staminate |lower floret reproduction=sterile |lower glume presence=absent |lower lemma fixation or orientation=appressed |lower palea presence=absent |margin shape or vernation=involute |paleum architecture or fixation=clasping |row quantity=2 |sheath architecture=open |spikelet architecture=sessile;subsessile |spikelet architecture or arrangement or growth form=solitary |spikelet shape=compressed |upper floret architecture=sessile |upper floret reproduction=bisexual |upper glume texture=membranous |upper glume variability=equal |upper lemma pubescence=glabrous |upper lemma texture=indurate |upper lower lemma texture=membranous |upper lower lemma variability=equal |whole_organism architecture=stoloniferous;rhizomatous |whole_organism arrangement or pubescence=tufted |whole_organism duration=annual;perennial |whole_organism growth form=plant;mat-forming;cespitose |x chromosome quantity=10 }}<!-- -->[[Category:Treatment]][[Category:Poaceae tribe Paniceae]] Templates used on this page: Template:Poaceae (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/Reference (view source) Return to Axonopus.