View source for Tripsacum ← Tripsacum 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=Tripsacum |accepted_authority=L. |publications= |basionyms= |synonyms= |hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Andropogoneae;Tripsacum |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 Andropogoneae]]</div><div class="higher-taxon"><small>genus</small>[[Tripsacum]]</div></div> |volume=Volume 25 |mention_page= |treatment_page=page 693 }}<!-- --><span class="statement" id="st-d0_s0" data-properties=""><b>Plants </b>perennial;</span> <span class="statement" id="st-d0_s1" data-properties="whole_organism duration;whole_organism reproduction;whole_organism architecture;whole_organism growth form;spikelet architecture;spikelet fusion;spikelet architecture;spikelet architecture">monoecious, staminate and pistillate spikelets evidently distinct, located in the same inflorescences, pistillate spikelets below the staminate spikelets.</span> <span class="statement" id="st-d0_s2" data-properties="culm some measurement"><b>Culms </b>0.7-5 m.</span> <span class="statement" id="st-d0_s3" data-properties="leaf odor"><b>Leaves </b>not aromatic;</span> <span class="statement" id="st-d0_s4" data-properties="sheath architecture">sheaths open;</span> <span class="statement" id="st-d0_s5" data-properties="ligule texture;ligule architecture">ligules membranous, erose to ciliate.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence position or structure subtype;inflorescence position;rame quantity;rame architecture;rame arrangement"><b>Inflorescences </b>terminal and axillary, panicles of 1-several subdigitate to racemose rames;</span> <span class="statement" id="st-d0_s7" data-properties="spikelet architecture">rames with pistillate spikelets proximally and staminate spikelets distally.</span> <span class="statement" id="st-d0_s8" data-properties="spikelet architecture"><b>Disarticulation </b>in the rames, beneath the pistillate spikelets and at the base of the staminate portions.</span> <span class="statement" id="st-d0_s9" data-properties="spikelet architecture;spikelet prominence;spikelet architecture or arrangement or growth form;axis texture"><b>Pistillate </b>spikelets exposed, solitary, embedded in the indurate rame axes;</span> <span class="statement" id="st-d0_s10" data-properties="lower glume texture;hollow condition;floret position">lower glumes coriaceous, closing the hollows in the rachises and concealing the florets;</span> <span class="statement" id="st-d0_s11" data-properties="upper glume size">upper glumes similar but smaller;</span> <span class="statement" id="st-d0_s12" data-properties="lower floret reproduction">lower florets sterile;</span> <span class="statement" id="st-d0_s13" data-properties="upper floret architecture">upper florets pistillate;</span> <span class="statement" id="st-d0_s14" data-properties="lemma coloration;palea coloration">lemmas and paleas hyaline, unawned;</span> <span class="statement" id="st-d0_s15" data-properties="style quantity;style fusion">styles 2, not fused.</span> <span class="statement" id="st-d0_s16" data-properties="spikelet architecture;spikelet arrangement;spikelet architecture;spikelet architecture;spikelet architecture;spikelet quantity;spikelet architecture;spikelet architecture"><b>Staminate </b>spikelets paired, both sessile or both subsessile, or 1 sessile and the other pedicellate;</span> <span class="statement" id="st-d0_s17" data-properties="glume texture;glume texture;glume texture;glume texture;glume texture">glumes coriaceous, chartaceous, or membranous;</span> <span class="statement" id="st-d0_s18" data-properties="lemma coloration;palea coloration">lemmas and paleas hyaline, unawned.</span> <span class="statement" id="st-d0_s19" data-properties="pedicel fusion;x chromosome quantity"><b>Pedicels </b>(when present) not fused to the rame axes, x = 9.</span><!-- -->{{Treatment/Body |distribution=Conn.;N.J.;N.Y.;Del.;D.C;W.Va.;Fla.;Puerto Rico;N.Mex.;Mass.;R.I.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Md.;Ala.;Ark.;Ill.;Ga.;Ind.;Iowa;Ariz.;Kans.;Nebr.;Okla.;Tex.;Ohio;Mo.;Mich.;Miss.;Ky. |discussion=<p>Tripsacum is a genus of 12 species, all of which are native to tropical and subtropical regions of the Western Hemisphere; three are native to the Flora region. They are good forage grasses, but are rarely sufficiently abundant in the Flora region to be important in this regard. The genus is of interest to plant breeders because of its relationship to Zea. Measurements of the pistillate spikelets are based on measurements of the lower glumes of the sessile spikelets, the remainder of the spikelet being concealed between the rachis and the lower glume.</p> |tables= |references={{Treatment/Reference |id=de1982a |text=de Wet, J.M.J., J.R. Harlan, and D.E. Brink. 1982. Systematics of Tripsacum dactyloides. Amer. J. Bot. 69:1251-1257 }}{{Treatment/Reference |id=de1983a |text=de Wet, J.M.J., D.E. Brink, and C.E. Cohen. 1983. Systematics of Tripsacum section Fasciculata (Gramineae). Amer. J. Bot. 70:1139-1146 }}{{Treatment/Reference |id=gray1974a |text=Gray, J.R. 1974. The genus Tripsacum L. (Gramineae): Taxonomy and chemosystematics. Ph.D. dissertation, University of Illinois at Urbana-Champaign, Urbana, Illinois, U.S.A. 191 pp. }}{{Treatment/Reference |id=li2000a |text=Li, Y.G., C.L. Dewald, and V.A. Sokolov. 2000. Sectional delineation of sexual Tripsacum dactyloides-T. mai.ar allotriploids. Ann. Bot. (London), n.s., 85:845-850. }} }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Staminate spikelets in sessile-pedicellate pairs, the pedicels almost flat to plano-convex in cross section, 2-5 mm long, less than 0.3 mm wide; glumes usually membranous (sect. Fasciculata) |[[Tripsacum lanceolatum|Tripsacum lanceolatum]] |-id=key-0-1 |1 |Staminate spikelets sessile, subsessile, or in sessile-pedicellate pairs, the pedicels triangular in cross section, to 2 mm long and about 0.5-0.8 mm wide; glumes somewhat coriaceous (sect. Tripsacum). |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Blades 9-35(45) mm wide, flat; culms 1-2(4) m tall |[[Tripsacum dactyloides|Tripsacum dactyloides]] |-id=key-0-2 |2 |Blades 1-7(15) mm wide, involute or folded; culms to 1 m tall |[[Tripsacum floridanum|Tripsacum floridanum]] |} </div></div><!-- -->{{#Taxon: name=Tripsacum |author=Mary E. Barkworth; |authority=L. |rank=genus |parent rank=tribe |synonyms= |basionyms= |family=Poaceae |distribution=Conn.;N.J.;N.Y.;Del.;D.C;W.Va.;Fla.;Puerto Rico;N.Mex.;Mass.;R.I.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Md.;Ala.;Ark.;Ill.;Ga.;Ind.;Iowa;Ariz.;Kans.;Nebr.;Okla.;Tex.;Ohio;Mo.;Mich.;Miss.;Ky. |reference=de1982a;de1983a;gray1974a;li2000a |publication title= |publication year= |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25_1654.xml |subfamily=Poaceae subfam. Panicoideae |tribe=Poaceae tribe Andropogoneae |genus=Tripsacum |axis texture=indurate |culm some measurement=0.7m;5m |floret position=concealing |glume texture=membranous;chartaceous;membranous;chartaceous;coriaceous |hollow condition=closing |inflorescence position=axillary |inflorescence position or structure subtype=terminal |leaf odor=not aromatic |lemma coloration=hyaline;hyaline |ligule architecture=erose;ciliate |ligule texture=membranous |lower floret reproduction=sterile |lower glume texture=coriaceous |palea coloration=hyaline;hyaline |pedicel fusion=not fused |rame architecture=subdigitate |rame arrangement=racemose |rame quantity=1;several |sheath architecture=open |spikelet architecture=pedicellate;sessile;subsessile;both;sessile;staminate;pistillate;staminate;pistillate;staminate;pistillate;pistillate |spikelet architecture or arrangement or growth form=solitary |spikelet arrangement=paired |spikelet fusion=distinct |spikelet prominence=exposed |spikelet quantity=1 |style fusion=not fused |style quantity=2 |upper floret architecture=pistillate |upper glume size=smaller |whole_organism architecture=staminate |whole_organism duration=perennial |whole_organism growth form=plant |whole_organism reproduction=monoecious |x chromosome quantity=9 }}<!-- -->[[Category:Treatment]][[Category:Poaceae tribe Andropogoneae]] 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 Tripsacum.