unequal glumes; prominent veins on longer glume
unequal glumes; prominent veins on longer glume
lens-shaped, light to dark brown or olive, shiny, 1-1.5 mm long; tubercle (cap on top of seed) flattened-triangular, abou...
brown, 3 angled. 0.5-1 mm long
lanceolate, thin and scalelike with wings, 3-5.5 mm long, 1-1.5 mm wide; inner face distinctly veined; wings narrowed bel...
trigonous, 1.1-1.4 mm long, style base persistent
common species with broad range and variable morphology; 1-2 mm long, yellow to brown; tubercle (cap on top of seed) flat...
brown, 3 angled, 1-2 mm long, up to 0.5 mm wide at broad end
ellipsoid to obovoid, 3-5 mm long, 2-3 mm wide; rounded on one side and compressed-angled on other; circular hole at base...
obovate, flat on one side, convex on other, 2-3 mm long, beak (on broad end of seed) up to 5 mm long, bristles (hairs) no...
flat on one side, convex on other, 2-3 mm long, beak (on broad end of seed) up to 0.2 mm long, bristles (hairs) not alway...
tan to white, 3 angled; ~ 1mm long, beak (on broad end of seed) ~0.2 mm long, bristles (hairs) not always present
ellipsoid trigonous with sinous, persistent style; 2.2-3 mm long, 2.5 times as long as wide
spindle shaped, 5-7 mm long; abruptly contracted to a beak 1-3 mm long
obovate, flat on one side, 2-4 mm long; conspicuously ribbed
obovate, 2-4 mm long; beak projecting vertically, 1-1.5 mm; narrowly winged relative to other Sagittaria spp.
flattened trigonous, 0.5-1 mm long; short beak; very long bristles easily attach/tangle
spindle shaped, 5-7 mm long; abruptly contracted to a beak 1-3 mm long
obovate, 6-8 mm long, 4-7 mm wide; flattened top; beak 2-4 mm long
floret awl-shaped, 1-2 cm long, tapering to an awn 3-6 cm long; seed cylyndric, 1-2 cm long
floret awl-shaped, 1-2 cm long, tapering to an awn 3-6 cm long; seed cylyndric, 1-2 cm long
oblong-elliptic, elongate, 0.8-1 mm long; whorled white pappus may be present; small, conical nipple on truncate end
oblong capsule, 3-5 mm long; may contain 1 or 2 seeds; capsules containing only 1 seed are tapered as seen in top left sp...
