This section is from the book "Field Book Of Western Wild Flowers", by Margaret Armstrong. Also available from Amazon: Field Book Of Western Wild Flowers.
A common kind, very variable in its manner of growth, being tall and erect in moist, shady places and spreading flat on the ground in dry, sunny spots. The leaves are dull green, more or less downy and more or less toothed, and the flowers are three-quarters of an inch across, clear yellow, usually with a speck, or blotch, of reddish-brown at the base of each petal; the stamens and pistil also yellow; the pods reddish and very much twisted. Gravelly washes are often thickly sprinkled with these gay and charming flowers.
Evenlng Primrose S-bisiorta. EVENING PRIMROSE FAMILY. Onagraceae.
 
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