Heteranthera dubia (Jacq.) MacMill.
water star-grass
Pontederiaceae (Water-Hyacinth family)
Introduction to Vascular Plants
water star-grass
Pontederiaceae (Water-Hyacinth family)
Introduction to Vascular Plants
Species Information
General:
Perennial, aquatic herb from slender roots, rooting at the nodes; stems flaccid, usually submerged, 30-100 cm long.
Leaves:
Stem leaves linear, alternate, 7-15 cm long, (1) 2-5 mm wide, the tips rounded; stipules membranous.
Flowers:
Inflorescence of solitary, terminal, pale yellow flowers emerging from an axillary tubular bract (spathe); perianth tubes slender, 2-4 cm long; perianth segments (tepals) linear, about 5 mm long; stamens 3, slightly shorter than the perianth segments.
Fruits:
Capsules; seeds numerous, many-ribbed.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Habitat and Range
Ponds, lakeshores and slow-moving streams in the steppe and montane zones; infrequent in SW and SC BC; disjunct to MB and E to PQ and S to ME, MA, PA, NC, FL, MS, LA, TX, NM, AZ, MX and CA; S America.Status Information
Synonyms
Synonyms and Alternate Names:
Zosterella dubia (Jacq.) Small