View source for Hydrilla

{{Treatment/ID
|accepted_name=Hydrilla
|accepted_authority=Richard
|publications={{Treatment/Publication
|title=Memoires de la Classe des Sciences Mathematiques et Physiques de L'Institut National de France
|place=12(2): 9, 61, 73, plate 2a–k. 1814
|year=1814
}}
|basionyms=
|synonyms=
|hierarchy=Hydrocharitaceae;Hydrilla
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hydrocharitaceae]]</div><div class="higher-taxon"><small>genus</small>[[Hydrilla]]</div></div>
|etymology=Greek hydr-, water, and -illa, diminutive
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism growth form"><b>Plants </b>perennial, of fresh or brackish waters.</span> <span class="statement" id="st-d0_s1" data-properties="rhizome presence;stolon presence"><b>Rhizomes </b>present, stolons absent.</span> <span class="statement" id="st-d0_s2" data-properties="stem orientation;stem architecture;stem architecture;stem architecture;stem shape"><b>Erect </b>stems rooted in substrate, branched or unbranched, elongate.</span> <span class="statement" id="st-d0_s3" data-properties="leaf position;leaf arrangement;leaf quantity;leaf location;leaf architecture"><b>Leaves </b>cauline, whorled, 3–8 per node, submersed, sessile;</span> <span class="statement" id="st-d0_s4" data-properties="blade arrangement or course or shape;blade arrangement or shape;base shape;apex shape">blade linear, rarely slightly elliptic, base tapering to stem, apex acute;</span> <span class="statement" id="st-d0_s5" data-properties="blade coloration">midvein without lacunae along side (s), blade uniform in color throughout;</span> <span class="statement" id="st-d0_s6" data-properties="">abaxial surface ly with prickles along midvein, without aerenchyma;</span> <span class="statement" id="st-d0_s7" data-properties="intravaginal squamule shape;hair coloration">intravaginal squamules fringed with orangebrown hairs.</span> <span class="statement" id="st-d0_s8" data-properties="inflorescence architecture;inflorescence architecture"><b>Inflorescences </b>1-flowered, sessile to subsessile;</span> <span class="statement" id="st-d0_s9" data-properties="spathe architecture">spathe not winged.</span> <span class="statement" id="st-d0_s10" data-properties="flower reproduction;flower architecture;flower architecture;plant location;plant architecture"><b>Flowers </b>unisexual, staminate and pistillate on different plants or on same plants, submersed, sessile;</span> <span class="statement" id="st-d0_s11" data-properties="petal coloration">petals whitish to reddish.</span> <span class="statement" id="st-d0_s12" data-properties="flower architecture;filament fusion"><b>Staminate </b>flowers: filaments distinct, released under water, rising to surface;</span> <span class="statement" id="st-d0_s13" data-properties="flower architecture;anther shape">anthers oval;</span> <span class="statement" id="st-d0_s14" data-properties="flower architecture">pollen in monads;.</span> <span class="statement" id="st-d0_s15" data-properties="ovary architecture or structure in adjective form">pPistillate flowers: ovary 1-locular;</span> <span class="statement" id="st-d0_s16" data-properties="floral-tube length or size;style quantity;style shape">floral-tube long, styles 1, not 2-fid.</span> <span class="statement" id="st-d0_s17" data-properties="fruit arrangement or course or shape;fruit shape;fruit architecture or pubescence or relief;fruit architecture or pubescence or relief;fruit dehiscence;process architecture;process architecture or shape"><b>Fruits </b>linear, cylindric, smooth or with simple spiny processes, indehiscent.</span> <span class="statement" id="st-d0_s18" data-properties="seed shape;seed pubescence"><b>Seeds </b>cylindric, glabrous.</span><!--

-->{{Treatment/Body
|distribution=North America;Central America;South America;Eurasia;Africa;Australia
|introduced=true
|discussion=<p>Species 1.</p>
|tables=
|references={{Treatment/Reference
|id=allen1976a
|text=Allen, G. E. 1976. Investigations and current status of insect enemies as biological control agents of aquatic weeds. In: C. K. Varshney and J. Rzóska, eds. 1976. Aquatic Weeds in South East Asia. The Hague.
}}{{Treatment/Reference
|id=austin1978a
|text=Austin, D. 1978. Exotic plants and their effects in southeastern Florida. Environm. Conserv. 5: 25--34.
}}{{Treatment/Reference
|id=blackburn1970a
|text=Blackburn, R. D. and L. W. Weldon. 1970. Control of Hydrilla verticillata. Hyacinth Control J. 8: 4--9.
}}{{Treatment/Reference
|id=cook1982a
|text=Cook, C. D. K. and R. Lüönd. 1982b. A revision of the genus Hydrilla (Hydrocharitaceae). Aquatic Bot. 13: 485--504.
}}{{Treatment/Reference
|id=lakshmanan1951a
|text=Lakshmanan, C. 1951. A note on the occurrence of turions in Hydrilla verticillata Presl. J. Bombay Nat. Hist. Soc. 49: 802--804.
}}{{Treatment/Reference
|id=shireman1981a
|text=Shireman, J. V. , and M. J. Maceina. 1981. The utilization of grass carp, Ctenopharyngodon idella Val., for Hydrilla control in Lake Baldwin, Florida. J. Fish Biol. 19: 629--636.
}}{{Treatment/Reference
|id=tarver1978a
|text=Tarver, D. P., J. A. Rodgers, M. J. Mahler, and R. L. Lazor. 1978. Aquatic and Wetland Plants of Florida. Tallahassee.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Hydrilla
|authority=Richard
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Hydrocharitaceae
|distribution=North America;Central America;South America;Eurasia;Africa;Australia
|introduced=true
|reference=allen1976a;austin1978a;blackburn1970a;cook1982a;lakshmanan1951a;shireman1981a;tarver1978a
|publication title=Memoires de la Classe des Sciences Mathematiques et Physiques de L'Institut National de France
|publication year=1814
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22_193.xml
|genus=Hydrilla
|anther shape=oval
|apex shape=acute
|base shape=tapering
|blade arrangement or course or shape=linear
|blade arrangement or shape=elliptic
|blade coloration=uniform
|filament fusion=distinct
|floral-tube length or size=long
|flower architecture=staminate;staminate;staminate;pistillate;staminate
|flower reproduction=unisexual
|fruit architecture or pubescence or relief=with simple spiny processes;smooth
|fruit arrangement or course or shape=linear
|fruit dehiscence=indehiscent
|fruit shape=cylindric
|hair coloration=orangebrown
|inflorescence architecture=sessile;subsessile
|intravaginal squamule shape=fringed
|leaf architecture=sessile
|leaf arrangement=whorled
|leaf location=submersed
|leaf position=cauline
|leaf quantity=3;8
|ovary architecture or structure in adjective form=1-locular
|petal coloration=whitish;reddish
|plant architecture=sessile
|plant location=submersed
|process architecture=simple
|process architecture or shape=spiny
|rhizome presence=absent
|seed pubescence=glabrous
|seed shape=cylindric
|spathe architecture=not winged
|stem architecture=unbranched;branched;rooted
|stem orientation=erect
|stem shape=elongate
|stolon presence=absent
|style quantity=1
|style shape=not 2-fid
|whole_organism duration=perennial
|whole_organism growth form=plant
}}<!--

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