Sagittaria montevidensis subsp. spongiosa

(Engelmann) Bogin

Memoirs of the New York Botanical Garden 9: 198. 1955.

Common names: Tidal arrowhead
Endemic
Basionym: Sagittaria calycina var. spongiosa Engelmann in A. Gray, Manual ed. 5, 493. 1867
Synonyms: Lophotocarpus spongiosus (J. G. Smith) Buchenau Sagittaria spatulata
Treatment appears in FNA Volume 22.

Herbs, annual, often stranded by low tide. Leaves emersed, sessile, phyllodial, lanceolate, or petiolate with blade spatulate, rarely sagittate. Inflorescences of 1–4 whorls, emersed; bracts connate. Flowers: pistillate with ring of sterile stamens; petals without purple spot at base. 2n = 22.


Phenology: Flowering summer–fall (Jul–Oct).
Habitat: Brackish to freshwater tidal mud flats and salt marshes
Elevation: 0–5 m

Distribution

V22 342-distribution-map.jpg

N.B., Conn., Del., Maine, Md., Mass., N.H., N.J., N.Y., Pa.

Discussion

Selected References

None.

Lower Taxa

None.
Robert R. Haynes +  and C. Barre Hellquist +
(Engelmann) Bogin +
Sagittaria calycina var. spongiosa +
Tidal arrowhead +
N.B. +, Conn. +, Del. +, Maine +, Md. +, Mass. +, N.H. +, N.J. +, N.Y. +  and Pa. +
0–5 m +
Brackish to freshwater tidal mud flats and salt marshes +
Flowering summer–fall (Jul–Oct). +
Memoirs of the New York Botanical Garden +
Lophotocarpus spongiosus +  and Sagittaria spatulata +
Sagittaria montevidensis subsp. spongiosa +
Sagittaria montevidensis +
subspecies +