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• Taxonomy
• Physical Description
• Similar Species
• Bibliography
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Taxonomy

Physical Description

Family Alismataceae:

Herbs, annual or perennial, rhizomatous, stoloniferous, or cormose, caulescent, glabrous to stellate-pubescent; sap milky. Roots septate or not septate. Leaves 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. Inflorescences scapose racemes or panicles, rarely umbels, erect, rarely floating or decumbent, whorled (forming racemes) or whorls branching (forming panicles), bracteolate. Flowers 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. Fruits achenes or follicles. Seeds: embryo U-shaped; endosperm absent in mature seed.

Genera 12, species ca. 80 (4 genera, 34 species in the flora) : nearly worldwide, primarily tropical and subtropical regions.^[1]

Genus x:

When placed before a specific epithet, indicates the taxon is of known hybrid origin. The basic number of chromosomes in a polyploid series.

Similar Species

Members of the genus x:

There are approximately 328 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them: x. Ackersteinia dodsonii · x. Aeonichryson aizoides · x. Aeoniogreenovia lambii · x. Aglaonaria robertsii · x. Agroelymus adamsii · x. Agroelymus bergrothii · x. Agroelymus bowdenii · x. Agroelymus cayouetteorum · x. Agroelymus colvillensis · x. Agroelymus dorei · x. Agroelymus hirtiflorus · x. Agroelymus hodgsonii · x. Agroelymus hultenii · x. Agroelymus jamesensis · x. Agroelymus mossii · x. Agroelymus ontariensis · x. Agroelymus palmerensis · x. Agroelymus pamiricus · x. Agroelymus piettei · x. Agroelymus strictus · x. Agroelymus turneri · x. Agroelymus ungavensis · x. Alcalthaea suffrutescens · x. aleuticus (Aleutian Wildrye) · x. Alismodorus muretii · x. Amarcrinum memoria-corsii (Amarcrinum) · x. Amarine tubergenii · x. Amarygia bidwellii · x. Amarygia parkeri · x. Anacamptorchis duquesnei · x. Anacamptorchis durandii · x. Anacamptorchis fallax. · x. Anacamptorchis guetroti · x. Anacamptorchis kelleri · x. Anacamptorchis klingei · x. Anacamptorchis la-niccae · x. Anacamptorchis laniccae · x. Anacamptorchis laniccae nothosubsp. galloprovinciana · x. Anacamptorchis larzacensis · x. Anacamptorchis lesbiensis · x. Anacamptorchis simorrensis · x. Anacamptorchis simorrensis nothovar. ticinensis · x. Anacamptorchis ticinensis · x. Anacamptorchis vanlookenii · x. Anacamptorchis weberi · x. Anoectomaria dominii · x. Aporberocereus innesii · x. arcuatum (Arcuate Barley) · x. aristatus (Purple Wildrye) · x. Asplenicystopteris blindii · x. Asplenicystopteris payotii · x. Asplenoceterach badense · x. Asplenoceterach barrancense · x. Asplenoceterach newmanii · x. Asplenophyllitis claphamii · x. Asplenophyllitis confluens · x. Asplenophyllitis hendersonii · x. Asplenophyllitis jacksonii · x. Asplenophyllitis kummerlei · x. Asplenophyllitis lobata · x. Asplenophyllitis microdon · x. Asplenosorus akaishiensis · x. Asplenosorus boydstoniae · x. Asplenosorus castaneoviridis · x. Asplenosorus ebenoides · x. Asplenosorus gravesii · x. Asplenosorus herb-wagneri · x. Asplenosorus inex.pectatus · x. Asplenosorus kentuckiensis · x. Asplenosorus kitazawae · x. Asplenosorus pinnatifidus · x. Asplenosorus shawneensis · x. Asplenosorus tosaensis · x. Asplenosorus trudellii · x. Astroworthia bicarinata · x. Astroworthia bicarinata nm. skinneri · x. Astroworthia skinneri · x. Attabignya minarum · x. Bolboschoenoplectus mariqueter · x. Bonstedtia lilacina · x. Bonstedtia youngiana · x. Borkersia soniae · x. Brachystemon nolae-carriae · x. braunii (Braun's Festulolium) · x. Brunsdonna parkeri · x. Brunserine tubergenii · x. Butyagrus nabonnandii · x. caduca (Mandan Ricegrass) · x. Calicharis butcheri · x. Carapelia tarantuloides · x. carduus font-queri · x. Carruanthophyllum hybridum · x. carthamus battandieri · x. carthamus doumerguei · x. carthamus faurei · x. centaurea bourlieri · x. centaurea impura · x. centaurea serresii · x. Ceterophyllitis hybrida · x. Chamaebivia francescae

Bibliography

• Argue, C. L. 1974. Pollen studies in the Alismataceae (Alismaceae). Bot. Gaz. 135: 338--344.
• Argue, C. L. 1976. Pollen studies in the Alismataceae with special reference to taxonomy. Pollen & Spores 18: 161--173.
• Beal, E. O. 1960b. The Alismataceae of the Carolinas. J. Elisha Mitchell Sci. Soc. 76: 68--79.
• Charlton, W. A. 1973. Studies in the Alismataceae. II. Inflorescences of Alismataceae. Canad. J. Bot. 51: 775--789.
• Correll, D. S. and H. B. Correll. 1972. Aquatic and Wetland Plants of Southwestern United States. Washington.
• Godfrey, R. K. and J. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States: Monocotyledons. Athens, Ga.
• 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.
• Haynes, R. R. and L. B. Holm-Nielsen. 1985. A generic treatment of Alismatidae in the Neotropics. Acta Amazôn. 15(suppl.): 153--193.
• Rogers, G. K. 1983. The genera of Alismataceae in the southeastern United States. J. Arnold Arbor. 64: 387--424.

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Notes

Identifiers:

• Zipcode Zoo Species Identifier: 3786991

Footnotes:

1. Robert R. Haynes ,C. Barre Hellquist "Alismataceae". in Flora of North America Vol. 22. Oxford University Press. Online at EFloras.org.