Intermediate Arrowhead

Sagittaria intermedia Micheli, in DC. Monog
Phan. 3 : 80. 1881.
Sagittaria acutifolia Griseb. Cat. Pi. Cuba 218. 1866. Not 5. acutifolia I,. 1753.
Plants emersed or partially submerged, 2-5 dm. tall; leaves erect or nearly so, the blades sagittate, hastate or triangular-hastate, 5-15 cm. long, the terminal lobe lanceolate to deltoid, acute or obtusish, the basal lobes narrower and longer than the terminal lobe, except in cases of imperfectly developed blades, acute or acuminate; scapes erect, commonly shorter than the leaves, simple or branched; whorls of the inflorescence few or many ; bracts ovate, obtuse, partially united ; pedicels 5-15 mm. long, those of the pistillate flowers shorter and much thicker than those of the staminate flowers ; sepals ovate to orbicular-ovate, becoming 6-8 mm. long ; filaments not dilated, glabrous ; anthers about as long as the filaments; fruit-heads 11-15 mm. in diameter; achenes 1.5-2 mm. long, obovate-cuneate, with the rather broad dorsal wing crest-like and the faces tuberculate, the beak minute, horizontal.
Type locality : Not given [Cuba] .
Distribution : Cuba and Jamaica.