Robert W. Freckmann Herbarium


  Sagittaria rigida Pursh image
Photographer: Robert W. Freckmann           

Eric J. Epstein

Paul Skawinski
Family Alismataceae
Sagittaria rigida Pursh
sessile-fruited arrow-head, stiff arrow-head
Sagittaria: from Latin sagitta, "arrow," because of the leaf shape
rigida: from a stiffly erect habit
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect or floating, perennial, emergent aquatic, 4"-24" tall
Flower: white, 3-parted, 1/2"-1" wide; inflorescence of 2-8 whorls of flowers with 1 unbranched stalk usually shorter than the leaves and bending at the lowest node; upper male flowers large and stalked, lower female flowers smaller and stalkless; blooms July-Sept.
Fruit:dry, flattened, winged, stalkless seed with angled, long beak,seed drawing
Leaf:usually broadly lance-shaped, sometimes with small lobes at the base
Habitat: swamps, shallow water
(Glossary)

More Information Natural Communities Herbarium Specimens
All Sagittaria list Google- Images or Text

Flora of North America (off site)
Synonyms 
Sagittaria heterophylla Pursh
Sagittaria heterophylla Pursh f. elliptica (Engelm.) S.F.Blake
Sagittaria heterophylla Pursh f. fluitans (Engelm.) S.F.Blake
Sagittaria heterophylla Pursh f. rigida (Pursh) S.F.Blake
Sagittaria rigida Pursh f. elliptica (Engelm.) Fernald
Sagittaria rigida Pursh f. fluitans (Engelm.) Fernald

         
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