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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. 2n = 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.
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| 1 |
Herbage sparsely to densely hairy; sepals densely hairy; petals 10.5-16 mm. |
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6a Limnanthes alba subsp. alba |
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Herbage glabrous; sepals glabrous or sparsely hairy; petals 8-15 mm |
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(2) |
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| 2 (1) |
Petals 8-10 mm, 1 times as long as wide, obovate; styles 2-3 mm; San Diego County. |
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6c Limnanthes alba subsp. parishii |
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Petals (8-)12-15 mm, 1-1.3 times as long as wide, obcordate or obovate; styles 3-4 mm; central Sierra Nevada to southern Oregon |
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(3) |
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| 3 (2) |
Leaflet blade narrowly oblong; petals cream, aging or drying lilac, obcordate, sparsely hairy (hairs long). |
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6b Limnanthes alba subsp. versicolor |
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Leaflet blade ovate to linear-lanceolate; petals usually white, sometimes cream basally, aging or drying pink, obovate, glabrous. |
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6d Limnanthes alba subsp. gracilis |
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Lower Taxa
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