Hygrophila

Contains 4 accepted taxa overall.

Characteristics
Hygrophila R.Br.
ACANTHACEAE
SWAMPWEED
View USF Herbarium specimens of this family
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Classification
LAMIALES
Hygrophila
Citation
HYGROPHILA R. Brown, Prodr. 479. 1810.
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TYPE: Hygrophila ringens (Linnaeus) Steudel (Ruellia ringens Linnaeus)
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Hygrophila corymbosa STARHORN Not Native OBL (NWPL) OBL (DEP)
Hygrophila costata GULF SWAMPWEED Native OBL (NWPL) OBL (DEP)
Hygrophila difformis WILD WISTERIA; BLUE HYGROPHILA Not Native OBL (NWPL) OBL (DEP)
Hygrophila polysperma INDIAN SWAMPWEED Not Native OBL (NWPL) Y OBL (DEP)
[Family identification key]
1.  Emergent leaves coarsely dentate, the submerged leaves pinnately dissected
H. difformis
1.  Emergent and submerged leaves entire to subtly undulate
2
2.  Petiole usually distinct from the blade, 1-6 cm long; inflorescence pedunculate; flowers pedicellate
H. corymbosa
2.  Petiole absent or grading into the blade, 0-1 cm long; inflorescence and flowers sessile to subsessile
3
3.  Larger leaves 6-20 cm long, mostly lanceolate to oblanceolate and the apex subacute to acuminate; stamens 4 per flower
H. costata
3.  Larger leaves 1-6 cm long, mostly elliptic to elliptic-oblanceolate and the apex rounded to obtuse; stamens 2 per flower
H. polysperma
Genus Synonyms
Synonym Full Citation Basionym Type
Asteracantha Asteracantha Nees von Esenbeck, in Wallich, Pl. Asiat. Rar. 3: 75, 90. 1832. TYPE: Asteracantha longifolia (Linnaeus) Nees von Esenbeck (Barleria longifolia Linnaeus)
Hemiadelphis Hemiadelphis Nees von Esenbeck, in Wallich, Pl. Asiat. Rar. 3: 75, 80. 1832. TYPE: Hemiadelphis polysperma (Heyne ex Roth) Nees von Esenbeck (Ruellia polysperma Heyne ex Roth)
Nomaphila Nomaphila Blume, Bijdr. 804. 1826. TYPE: Nomaphila corymbosa Blume
Physichilus Physichilus Nees von Esenbeck, Companion Bot. Mag. 2: 310. 1836. TYPE: Physichilus serpyllum Nees von Esenbeck
Polyechma Polyechma Hochstetter, Flora 24: 376. 1841. TYPE: Polyechma coeruleum Hochstetter
Tenoria Tenoria Dehnhardt & Giordano ex Dehnhardt, Cat. Horti Camuld., ed. 2. 24. 1832, non Tenoria Sprengel 1813, nec Tenorea Rafinesque 1814, nec Tenorea Colla 1824. TYPE: Non designatus.