6.
Limnanthes alba
Hartweg ex Bentham, Pl. Hartw. 301. 1849.
Plants
8-40 cm; herbage glabrous or sparsely to densely hairy.
Stems
erect.
Leaves
2-10 cm; leaflets 5-9, blade oblong, ovate, lanceolate, or linear-lanceolate, margins entire or shallowly 2-lobed to deeply 3-lobed.
Flowers
bowl- to bell-shaped; sepals accrescent or not, lanceolate, ovate, or lanceolate-ovate, 4-8 mm; petals white or cream (sometimes cream basally, aging or drying pink or lilac), obovate, obovate-cuneate, or obcordate, 8-16 mm, 1-1.5 times as long as wide, 1.25-2.1 times longer than sepals, apex usually emarginate, sometimes truncate; filaments 3-6 mm; anthers 1-2 mm; style 2-6 mm.
Nutlets
gray or dark brown, 3-4 mm, tuberculate or not, sometimes ridged, tubercles gray or dark brown, relatively low and wide.
2
n
= 10.
Subspecies 4 (4 in the flora): w United States.
SELECTED REFERENCE Ritland, K. and S. K. Jain. 1984. A comparative study of floral and electrophoretic variation with life history variation in
Limnanthes alba
(Limnanthaceae). Oecologia 63: 243-251.
