View source for Halophila

{{Treatment/ID
|accepted_name=Halophila
|accepted_authority=Thouars
|publications={{Treatment/Publication
|title=Genera Nova Madagascariensia
|place=2. 1806
|year=1806
}}
|basionyms=
|synonyms=
|hierarchy=Hydrocharitaceae;Halophila
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hydrocharitaceae]]</div><div class="higher-taxon"><small>genus</small>[[Halophila]]</div></div>
|etymology=Greek halo, sea, and philein, to love
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>of marine waters. <b>Rhizomes</b> present; leaf-bearing branches arising from rhizome at each node; stolons absent. <b>Erect</b> stems, if present, rooted in substrate, unbranched, short; scales 2, midway or higher on stem. <b>Leaves</b> 2–8, terminal pairs or pseudowhorls [distichous], submersed, sessile or petiolate; blade linear to ovate, base tapering to stem; apex obtuse; midvein without lacunae along side(s), blade uniform in color throughout; abaxial surfacely without prickles; intravaginal squamules entire. <b>Inflorescences</b> 1-flowered or cymose, sessile; spathes not winged. <b>Flowers</b> unisexual, staminate and pistillate on same plants or on different plants, submersed, sessile, nearly sessile (pistillate), or pedicellate (staminate); petals absent. <b>Staminate</b> flowers: filaments distinct; anthers linear to fusiform; pollen in moniliform chains. <b>Pistillate</b> flowers: ovary 1-locular; styles 3–5, not 2-fid. <b>Fruits</b> ovoid to spheric, smooth or ridged, not echinate, dehiscing by decay of pericarp. <b>Seeds</b> spheric or nearly so, echinate to reticulate.</span><!--

-->{{Treatment/Body
|distribution=North America;Central America;South America;s Europe;Asia;Africa;Australia.
|discussion=<p><i>Halophila</i> baillonis Ascherson ex Dickie has been listed for the Florida Keys (R. K. Godfrey and J. W. Wooten 1979), but that species is restricted to areas south of the Keys (C. den Hartog 1970; N. J. Eiseman and C. McMillan 1980).</p><!--
--><p>In addition to the three species treated here, three additional ones, <i>Halophila</i> aschersonii Ostenfeld, H. baillonis Ascherson ex Dickie, and H. hawaiiana Doty & Stone, have been credited to North America. These represent two taxa, neither of which approaches North America. <i>Halophila</i> baillonis occurs in the Caribbean Sea, and H. aschersonii is a synonym of that species. <i>Halophila</i> hawaiiana grows in the eastern Pacific Ocean and is known in the United States only from the Hawaiian Islands.</p><!--
--><p>Species 10 (3 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=doty1967a
|text=Doty, M. S. and B. C. Stone. 1967. Typification for the generic name Halophila Thouars. Taxon 16: 414--418.
}}{{Treatment/Reference
|id=eiseman1980a
|text=Eiseman, N. J. and C. McMillan. 1980. A new species of seagrass, Halophila johnsonii, from the Atlantic coast of Florida. Aquatic Bot. 9: 15--19.
}}{{Treatment/Reference
|id=hartog1959a
|text=Hartog, C. den. 1959. A key to the species of Halophila (Hydrocharitaceae), with descriptions of the American species. Acta Bot. Neerl. 8: 484--489.
}}{{Treatment/Reference
|id=sachet1973a
|text=Sachet, M.-H. and F. R. Fosberg. 1973. Remarks on Halophila (Hydrocharitaceae). Taxon 22: 439--443.
}}{{Treatment/Reference
|id=short1984a
|text=Short, F. T. and M. L. Cambridge. 1984. Male flowers of Halophila engelmanii: Description and flowering ecology. Aquatic Bot. 18: 413--416.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Erect stems apparent; rhizome with 2 scales on rhizome at each node, erect stem with 2 scales on erect stem near middle; leaves in pseudowhorl at apex of erect shoot.
|[[Halophila engelmannii|Halophila engelmannii]]
|-id=key-0-1
|1
|Erect stems very short to absent; 2 scales on rhizome at each node; leaves apparently attached to rhizome.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Blade linear-lanceolate, margins entire, glabrous; staminate and pistillate flowers on different plants.
|[[Halophila johnsonii|Halophila johnsonii]]
|-id=key-0-2
|2
|Blade oblong-elliptic, margins serrulate, pubescent; staminate and pistillate flowers on same plants.
|[[Halophila decipiens|Halophila decipiens]]
|}
</div></div><!--

-->{{#Taxon:
name=Halophila
|author=
|authority=Thouars
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Hydrocharitaceae
|distribution=North America;Central America;South America;s Europe;Asia;Africa;Australia.
|reference=doty1967a;eiseman1980a;hartog1959a;sachet1973a;short1984a
|publication title=Genera Nova Madagascariensia
|publication year=1806
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V22/V22_125.xml
|genus=Halophila
}}<!--

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