The lance-shaped 4 in. x 3/4 " leaves are shiny, dark green, and veiny above; margins smooth or fine-toothed. Leaves slightly wider in the middle or gradually widening towards the tip. El Moro Canyon, Crystal Cove State Park, Orange County, CA. 1-18-12. © Peter J. Bryant |
Arroyo Willow Salix lasiolepisSalicaceae The most common willow species in Southern California. A short-lived, fast-growing multi-stemmed shrub or small tree growing 10-30 ft. with smooth bark and yellowish to dark brown twigs. It can form dense thickets along streams, washes and pond margins. Willows are dependent on occasional flooding for regeneration. This allows seedlings to grow and dislodged limbs and trunks to reestablish themselves, when partially buried. Catkins on short leafy stems appear before the leaves. Winter bud scales are blunt-tipped. The fruit is a 2-valved capsule. Bloom time Jan.-Apr. When pruned, willows readily sprout new branches called wands, a process called coppicing. The wands have long been used for making boats, baskets and furniture, and as fodder. Willow wood is also used for making boxes, cricket bats and pulp. More on Uses. Back to Salicaceae of Orange County, California |
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With rosette galls. Upper Newport Bay, Newport Beach, CA. 10-07-11. © Joan Avise. |
Leaf underside has a waxy silvery-blue bloom. Mason Regional Park, Irvine, CA. 9-29-11. © Joan Avise. |
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Either very small remant stipules or none at all. Arroyo Trabuco GC, Mission Viejo, 9-20-12. © Ron Vanderhoff |
No stipules. Arroyo Trabuco GC, Mission Viejo, 9-20-12. © Ron Vanderhoff |
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The staminate flowers (male catkins) have two stamens with filaments smooth and united below. San Onofre State Beach, San Diego Co., CA. 1-7-12. © Joan Avise. |
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Male catkins. Huntington Central Park, Huntington Beach, CA. 2-23-08. © Joan Avise. |
Male catkin, Huntington Central Park, Huntington Beach, CA. 2-23-08. © Joan Avise. |
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Female catkins, Mason Regional Park, Irvine, CA. 2-17-08. © Joan Avise. |
Female catkin and developing fruit. Mason Regional Park, Irvine, CA. 2-17-08. © Joan Avise. |
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Associations with Insects | |||
Larval foodplant for the following butterflies: | |||
Western Tiger Swallowtail, Papilio rutulus |
Mourning Cloak, Nymphalis antiopa |
Lorquin's Admiral, Limenitis lorquini |
Viceroy, Limenitis archippus |
Sylvan Hairstreak, Satyrium sylvinus |
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Galls induced by insects |
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Willow Rosette Gall Midge, Rabdophaga salicisbrassicoides |
Willow Leaf Gall Sawfly, Pontania pacifica |
Willow Leaf Gall Sawfly, Pontania sp. |
Euura sp. |