(see purslane, n. 2).

the European aquatic plant Hydrocharis morsus-ranae (family Hydrocharitaceae), having kidney-shaped leaves and white and green flowers, now widely…

= heart mint n. at heart, n. int.adv. compounds 3b. Obsolete. rare.

A halophytic coastal plant, Glaux maritima (family Primulaceae), having small pink axillary flowers. More fully sea milkwort or †black milkwort.

Either of two aquatic plants with a spikelike inflorescence: (in early use) wild calla or bog arum, Calla palustris (family Araceae) (now rare)…

†(a) the water crowfoot, Ranunculus aquatilis (obsolete); (b) any of various liverworts (bryophytes) of damp or aquatic habitats; (in later use) spec.…

Any of various aquatic plants of other genera and families, mostly having finely divided submerged leaves; esp. (in full water milfoil) any of…

Any of various aquatic plants with finely divided submerged leaves, as (a) water violet, Huttonia palustris; (b) a water crowfoot (genus Ranunculus…

a yellow cress (genus Rorippa) growing in or near water; esp. marsh yellow cress, R. palustris, and great yellow cress, R. amphibia.

An aquatic or marsh plant of the genus Sagittaria, having white flowers, arrowhead-shaped leaves, and edible tubers. Frequently with distinguishing…

Black Saltwort, Glaux maritima. = milkwort, n. 3.

an arrowhead (genus Sagittaria), esp. S. sagittifolia of Eurasia.

Originally: a plant of the family Araceae, esp. one belonging to the genus Calla or formerly included in it; also (in form Calla) the genus itself…

Any of various aquatic or semiaquatic plants of the genus Rorippa (family Brassicaceae (Cruciferae)), as creeping yellow cress, R. sylvestris…

(see quots.).

obsolete name of the Arrowhead (Sagittaria sagittifolia).

(originally) any of various small, often straggling or decumbent herbaceous plants of wet or damp habitats; (in later use) spec. Myosoton aquaticum…

(a) a small creeping plant of pond margins, Lythrum portula (family Lythraceae), with inconspicuous axillary flowers; (b) U.S. a water primrose, Lud…

Any of several other related or similar plants; esp. (more fully dead arsesmart or spotted arsesmart) redshank, Persicaria maculosa, which is…

†(a) hedge hyssop, Gratiola officinalis (obsolete); (b) any of various plants related to this; esp. any of the aquatic or wetland plants of warm…

An aquatic plant (not identified) thought to smell like thyme. Obsolete.

A tree or plant native to tropical America which supplies lignum nephriticum (see lignum nephriticum, n.). Obsolete. rare.

A genus of aquatic plants (family Haloragaceae) having whorls of submerged feathery leaves and emergent flower spikes, some species being cultivated…

Any of several aquatic plants of other families; spec. (a) the water hyacinth, Eichhornia azurea; (b) (as least water plantain) a mudwort, Limosell…

(a) mudwort, Limosella aquatica; †(b) lesser marshwort, Apium inundatum (obsolete).

Botany. A genus of aquatic herbaceous plants, N.O. Marantaceæ, natives of tropical America.

Any plant of the North American genus Hydrophyllum (family Boraginaceae or Hydrophyllaceae), which comprises several small shade-loving, herbaceous…

a plant of the cosmopolitan genus Riccia (family Ricciaceae), comprising thallose liverworts occurring in moist soils or aquatic habitats; cf. live…

†(a) the mudwort Limosella aquatica (obsolete); (b) balisier, Heliconia bihai (now rare).

any species of Eriocaulon (pipewort).

A plant of the genus Ruppia, the sole member of the family Ruppiaceae (formerly included in the pondweed family, Potamogetonaceae), comprising…

A salt-tolerant creeping vine, Ipomoea pes-caprae (family Convolvulaceae), growing on beaches and dunes along the tropical coasts of the Atlantic…

The aquatic monocotyledonous plant Eriocaulon aquaticum (family Eriocaulaceae), native to North America, western Ireland, and the Hebrides, with…

= blinks, n. 2.

Any of several dwarf annual creeping plants of the genus Limosella (family Scrophulariaceae), which bear tiny white or pinkish flowers in the axil of…

North American. Arrowhead (genus Sagittaria).

= water shield n.

Chiefly North American. Either of two herbaceous perennials that typically grow in shallow water at stream or pond margins: (a) (more fully American w…

Swertia perennis.

a widely distributed aquatic plant having oval floating leaves, submerged stems coated in mucilage, and small purple flowers, Brasenia schreberi…

any of several small creeping North American or Caribbean swamp plants of the genus Proserpinaca (family Haloragaceae), esp. P. palustris, having…

Any of several chiefly tropical and subtropical aquatic plants constituting the genus Heteranthera (family Pontederiaceae), which have…

A freshwater plant with heavily branching stems, small transparent flowers, and whorls of narrow leaves, Hydrilla verticillata (family Hydrocharit…

Herbalism. The Water Chickweed, or Blinking Chickweed, Montia fontana.

Any of numerous liverworts of the family Ricciaceae, which comprises thallose liverworts found worldwide in moist soils and aquatic habitats; (in…

Botany. Originally, J. Lindley's name for: a plant of the family Najadaceae, comprising various aquatic monocotyledonous plants. Now: spec. any…

J. Lindley's name for: any plant of the small family Philydraceae, native to Australia and tropical east Asia. rare (now disused).

(a) arrowhead (genus Sagittaria); (b) U.S. an evergreen shrub native to southwestern United States and northern Mexico, Pluchea sericea (family Aster…

sea-buckthorn, Hippophaë rhamnoides.

the Ouvirandra fenestralis or lace-leaf of Madagascar.

any of various plants of the genus Nymphoides and several related genera of the family Menyanthaceae.

Chiefly U.S. Any of several aquatic plants native to eastern North and Central America; esp. spatterdock, Nuphar advena. Also: a leaf of such a…

Xanthoxylon Clava-Herculis or carolinianum.

an aquatic plant, Alternanthera philoxeroides, with small white flowers on long stems, native to South America but introduced elsewhere and often…

Any of various umbelliferous plants of damp or wet habitats, as (in early use) water parsnip (Sium latifolium) and wild celery (Apium graveolens)…

A plant. In modern use, the English name of the genus Hyacinthus (family Liliaceæ), consisting of bulbous plants with bell-shaped six-parted…

The American Spanish name for the water hyacinth, Eichhornia crassipes.

The golden-club, Orontium aquaticum (family Araceae), an aquatic plant of swamps and wetlands in the south-eastern U.S.