Difference between revisions of "Hydrocharis"
Sp. Pl. 2: 1036. 1753; Gen. Pl. ed. 5; 458, 1754.
imported>Volume Importer |
imported>Volume Importer |
||
| Line 50: | Line 50: | ||
|publication year=1754 | |publication year=1754 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V22/V22_620.xml |
|genus=Hydrocharis | |genus=Hydrocharis | ||
}}<!-- | }}<!-- | ||
-->[[Category:Treatment]][[Category:Hydrocharitaceae]] | -->[[Category:Treatment]][[Category:Hydrocharitaceae]] | ||
Latest revision as of 21:32, 5 November 2020
Plants perennial, of fresh waters. Rhizomes absent; stolons present. Stems floating on or suspended in water, rooted or not, unbranched, short. Leaves basal, emergent or floating, petiolate; blade cordate to reniform or orbiculate, base reniform or cordate, apex obtuse to almost truncate; midvein without rows of lacunae along sides, uniform in color throughout, abaxial surface without prickles, smooth on emergent leaves or with aerenchymous tissue on floating leaves; intravaginal squamules entire. Inflorescences 1-flowered or cymose, sessile or short-pedunculate; spathe not winged. Flowers unisexual, staminate and pistillate on different plants [on same plants], emersed, pedicellate; petals white to pinkish. Staminate flowers: filaments distinct or basally connate, distinct portion longer than connate; anthers oval; pollen in monads. Pistillate flowers: ovary 1-locular; styles 6, 2-fid less than ½ length. Fruits spheric, smooth to ridged, dehiscing irregularly. Seeds ellipsoid, minutely tuberculate or muricate.
Distribution
Introduced; North America, Eurasia, Africa, Australia.
Discussion
Species 3 (1 in the flora).