View source for Alismataceae

{{Treatment/ID
|accepted_name=Alismataceae
|accepted_authority=Ventenat
|publications=
|common_names=Water-plantain or Arrowhead Family
|basionyms=
|synonyms=
|hierarchy=Alismataceae
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Alismataceae]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=page 7
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual or perennial, rhizomatous, stoloniferous, or cormose, caulescent, glabrous to stellate-pubescent; sap milky. <b>Roots</b> septate or not septate. <b>Leaves</b> basal, submersed, floating, or emersed, sessile or petiolate, sheathing proximally; blade with translucent markings of dots or lines present or absent, basal lobes present or absent; venation reticulate, primary veins parallel from base of blade to apex, secondary veins reticulate. <b>Inflorescences</b> scapose racemes or panicles, rarely umbels, erect, rarely floating or decumbent, whorled (forming racemes) or whorls branching (forming panicles), bracteolate. <b>Flowers</b> bisexual or unisexual, if unisexual, staminate and pistillate on same or different plants, hypogynous, subsessile to long-pedicellate; sepals persistent, 3; petals deciduous, 3, delicate; stamens 0, 6, 9, or to 30, distinct; anthers 2-loculed, dehiscing longitudinally; pistils 0 or 6–1500 or more, distinct or coherent proximally, 1-loculed; placentation basal; ovules1–2. <b>Fruits</b> achenes or follicles. <b>Seeds</b>: embryo U-shaped; endosperm absent in mature seed.</span><!--

-->{{Treatment/Body
|distribution=Nearly worldwide;primarily tropical and subtropical regions.
|discussion=<p>Genera 12, species ca. 80 (4 genera, 34 species in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=argue1974a
|text=Argue, C. L. 1974. Pollen studies in the Alismataceae (Alismaceae). Bot. Gaz. 135: 338--344.
}}{{Treatment/Reference
|id=argue1976a
|text=Argue, C. L. 1976. Pollen studies in the Alismataceae with special reference to taxonomy. Pollen & Spores 18: 161--173.
}}{{Treatment/Reference
|id=beal1960a
|text=Beal, E. O. 1960b. The Alismataceae of the Carolinas. J. Elisha Mitchell Sci. Soc. 76: 68--79.
}}{{Treatment/Reference
|id=charlton1973a
|text=Charlton, W. A. 1973. Studies in the Alismataceae. II. Inflorescences of Alismataceae. Canad. J. Bot. 51: 775--789.
}}{{Treatment/Reference
|id=correll1972a
|text=Correll, D. S. and H. B. Correll. 1972. Aquatic and Wetland Plants of Southwestern United States. Washington.
}}{{Treatment/Reference
|id=godfrey1979a
|text=Godfrey, R. K. and J. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States: Monocotyledons. Athens, Ga.
}}{{Treatment/Reference
|id=haynes1985c
|text=Haynes, R. R. and L. B. Holm-Nielsen. 1985. A generic treatment of Alismatidae in the Neotropics. Acta Amazôn. 15(suppl.): 153--193.
}}{{Treatment/Reference
|id=haynes1994a
|text=Haynes, R. R. and L. B. Holm-Nielsen. 1994. The Alismataceae. In: Organization for Flora Neotropica. 1968+. Flora Neotropica. 75+ nos. New York. No. 64, pp. 1--112.
}}{{Treatment/Reference
|id=rogers1983a
|text=Rogers, G. K. 1983. The genera of Alismataceae in the southeastern United States. J. Arnold Arbor. 64: 387--424.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Pistils weakly coherent proximally into starlike aggregation; petals erose
|[[Damasonium|Damasonium]]
|-id=key-0-1
|1
|Pistils distinct, forming heads or rings; petals entire.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Pistils arranged in ring around margin of flattened receptacle.
|[[Alisma|Alisma]]
|-id=key-0-2
|2
|Pistils spirally arranged on convex receptacle.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Flowers all bisexual; fruits mostly plump, longitudinally ribbed, lateral wings absent.
|[[Echinodorus|Echinodorus]]
|-id=key-0-3
|3
|Flowers unisexual (at least the proximal); fruits compressed, lateral wing often present, 1, curved.
|[[Sagittaria|Sagittaria]]
|}
</div></div><!--

-->{{#Taxon:
name=Alismataceae
|author=Robert R. Haynes;C. Barre Hellquist
|authority=Ventenat
|rank=family
|parent rank=
|synonyms=
|basionyms=
|family=Alismataceae
|illustrator=John Myers
|distribution=Nearly worldwide;primarily tropical and subtropical regions.
|reference=argue1974a;argue1976a;beal1960a;charlton1973a;correll1972a;godfrey1979a;haynes1985c;haynes1994a;rogers1983a
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V22/V22_414.xml
}}<!--

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