Sagittaria latifolia Willd.
Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)
Pertinent Common Names (particularly those used in California; go to GRIN for other common names)
broadleaf arrowhead, duck potato
Primary Disseminule Type
Description (diagnostics are in brown)
Fruit a winged achene, oblanceolate in outline (outline is of the laterally compressed fruit), 2.3–3.5(4) mm long x 1.5–2.5(3) mm wide x ca. 0.3 mm thick, with a horizontally-pointing (often curved down at tip) beak (stylar remnant) measuring 0.5–1(2) mm long near the apex of the ventral wing. Surface light to medium brown, with 0–1 elongated resin-filled glands on each face, smooth to rough (striate to mildly wrinkled).
Fruit attachment scar at base, ca. 2 mm long, same color as rest of fruit body or darker.
Embryo upside-down U-shaped, its form visible on fruit's surface, endosperm absent.
Risk Assessment (codes in yellow or red indicate cause for concern; assessments are current as of mid-2011; click AUQP, NZBORIC, or NZBPI for access to the most recent versions of these databases and possible assessment changes)
AUQP, NZBORIC, NZBPI