Page author: Hattie Palmer
Sagittaria graminea ssp. graminea
Specimens
Photos

Origin: Introduced from eastern North America

Conservation Status: Not of concern

Description:
General:

Herbaceous perennials to 100 cm, with coarse rhizomes, stolons and corms absent.

Leaves:

Submersed or emersed, margins entire; leaves under water phyllodial, angled beneath and flattened above, 6.4-35 cm long and 0.5-4 cm broad; leaves above water petiolate, petioles triangular and 6.5-17 cm long, blade linear to linear-oblanceolate, 2.5-17.5 cm long and 0.2-4 cm broad.

Flowers:

Inflorescences bracteate racemes or panicles with 1-12 whorls, above water, 2.5-21 cm long and 1-8 cm broad; peduncles 6.5-29.7 cm long; bracts connate greater than or equal to ΒΌ total length, broadly subulate to lanceolate, 20-50 mm, not papillose; fruiting pedicels spreading and cylindric to 5 cm; flowers imperfect, to 2.3 cm in diameter; sepals 3, curving backward to spreading, not encasing the flower; petals 3, white, deciduous; filaments widened, shorter than anthers, pubescent; anthers 2 chambered, splitting longitudinally; pistillate flowers pedicellate, sterile stamens absent.

Fruits:

Fruiting heads 0.6-1.5 cm in diameter; achenes oblanceoloid with no abaxial keel, 1.5-2.8 mm long and 1.1-1.5 mm broad, beaked; faces not forming any projections or protuberances, abaxial wings absent or 1, entire, glands 1 or 2; beak lateral and erect, 0.2 mm.

Accepted Name:
Sagittaria graminea Michx. ssp. graminea
Publication: Flora Boreali-Americana. 2: 190. 1803.

Synonyms & Misapplications:
Sagittaria cycloptera (J.G. Sm.) C. Mohr
Sagittaria eatonii J.G. Sm.
Sagittaria graminea Michx. var. graminea [KZ99]
Sagittaria macrocarpa J.G. Sm.
Additional Resources:

PNW Herbaria: Specimen records of Sagittaria graminea ssp. graminea in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Sagittaria graminea ssp. graminea checklist entry.

E-Flora BC: Sagittaria graminea ssp. graminea atlas page.

CalPhotos: Sagittaria graminea ssp. graminea photos.

USDA Plants: Sagittaria graminea ssp. graminea information.

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