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-undefined" data-properties=""><b>Plants </b>perennial, of fresh or brackish waters. <b>Rhizomes</b> present, stolons absent. <b>Erect</b> stems rooted in substrate, branched or unbranched, elongate. <b>Leaves</b> cauline, whorled, 3–8 per node, submersed, sessile; blade linear, rarely slightly elliptic, base tapering to stem, apex acute; midvein without lacunae along side(s), blade uniform in color throughout; abaxial surface ly with prickles along midvein, without aerenchyma; intravaginal squamules fringed with orange-brown hairs. <b>Inflorescences</b> 1-flowered, sessile to subsessile; spathe not winged. <b>Flowers</b> unisexual, staminate and pistillate on different plants or on same plants, submersed, sessile; petals whitish to reddish. <b>Staminate</b> flowers: filaments distinct, released under water, rising to surface; anthers oval; pollen in monads; . pPistillate flowers: ovary 1-locular; floral tube long, styles 1, not 2-fid. <b>Fruits</b> linear, cylindric, smooth or with simple spiny processes, indehiscent. <b>Seeds</b> cylindric, glabrous.</span><!--

-->{{Treatment/Body
|distribution=North America;Central America;South America;Eurasia;Africa;Australia.
|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
|author=
|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://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V22/V22_193.xml
|genus=Hydrilla
}}<!--

-->[[Category:Treatment]][[Category:Hydrocharitaceae]]