Bogs and Acidic Peatlands of Southern New England by Marsha C. Salett
Taxonomy
Sagittaria engelmanniana J.G.Smith
ALISMATACEAE (Water-Plantain Family)
EtymologySagittaria is derived from the Latin sagitta = arrow, because of its arrow-shaped leaves; Engelmanniana is named for Georg Engelmann (1844-1930), an American physician and botanist who studied oaks, conifers, Cactaceae and Cuscuta.
Synonyms (Common Name)Engelmann's Arrowhead
DescriptionLike other arrowhead species, narrow-leaved arrowhead is a stemless, aquatic, perennial herb. Small and slender, it is an emergent plant of shallow, acidic waters. Narrow-leaved arrowhead is found chiefly along the coastal plain in Massachusetts, Connecticut, and Rhode Island, which are the northern limits of its range.
Wetland indicator statusOBL
Plant Height10-30 inches
LeavesSimple, entire, narrowly arrow-shaped with narrow-linear basal lobes; 2-4" long, blade less than 1" wide; parallel veins emanating from single point on the leaf.
Flower/InflorescenceWhite with bright yellow center, 1-1 1/2" wide, showy, 3 sepals, 3 petals; 2-4 whorls of 3 flowers; female flowers below male flowers.
Flowering PeriodJuly-September
FruitAchene tiny, flat with 1-2 wings on each face; in seedpod up to 1/2" wide; seedpods usually in whorls of 3.
HabitatAcidic waters of bogs, ponds and streams.
RangeMassachusetts to Florida and Mississippi, mainly on coastal plain.
(c) 1998-2006 Marsha C. Salett