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.
Near the summit of Mt. Lowe, and in similar places, we find this beautiful vine clambering over the rocks. The flowers measure an inch and a quarter to over two inches across and they vary in tint from almost pure white to a lovely soft shade of pale-yellow, the handsome clusters forming a beautiful contrast to the dark-green foliage. The stamens and pistils are on different plants. The flowers, leaves, and stems are all more or less velvety and the akenes have tails an inch long, forming a head, about two inches across. The flowers are often so numerous as to make conspicuous masses of pale color on canyon sides, in the Coast Range and Sierra Nevada Mountains.

Virgin's Bower- Clematis lasiantha. BUTTERCUP FAMILY. Ranunculaceae.
 
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