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Treebeard: Galled flower of Canyon Sunflower (Venegasia carpesioides, Asteraceae)
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Treebeard: Unknown gall on Canyon Live Oak (Fagaceae chryolepis, Fagaceae)
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Treebeard: Gall of Live Oak Apple Gall Wasp (Callirhytis quercuspomiformis, Cynipidae) on Coast Live Oak
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Treebeard: Gall of California Gall Wasp (Andricus quercuscalifornicus, Cynipidae) on Scrub Oak
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Treebeard: Tiny polished gall on vein of a leaf of Coast Live Oak (Quercus agrifolia, Fagaceae)
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Treebeard: This native Wild Blackberry (Rubus ursinus, Rosaceae) has a fungus infection
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Treebeard: Tiny bisexual winter galls of Cynipidae wasps (Hymenoptera) on Scrub Oak (Quercus berberidifolia, Fagaceae)
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Treebeard: Fang-like gall on Goldencup Oak (Fagaceae chryolepis)
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Treebeard: Odd furry gall on a branch of Goldencup Oak (Quercus chrysolepis)
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Treebeard: New furry gall of the Round Gall Wasp (Besbicus conspicuus, Cynipidae, Hymenoptera)
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Treebeard: Gall of Beaked Twig Gall Wasp (Disholcaspis plumbella)
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Treebeard: Succulent new gall on a twig of Scrub Oak (Quercus berberidifolia, Fagaceae) - maybe Beaked Twig Gall Wasp (Disholcaspis plumbella)?
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Treebeard: New furry galls of the Round Gall Wasp (Besbicus conspicuus, Cynipidae, Hymenoptera) on Scrub Oak (Quercus berberidifolia, Fagaceae)
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Treebeard: Beautiful gall of a Beaked Twig Gall Wasp (Disholcaspis plumbella, Cynipidae, Hymenoptera) on Scrub Oak (Quercus berberidifolia, Fagaceae)
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Treebeard: New integral stem gall of the Tapered Stem Gall Wasp (Andricus spectabilis, Cynipidae, Hymenoptera)
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Treebeard: New leaf gall on new leaves of deciduous Blue Oak (Quercus douglasii, Fagaceae)
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Treebeard: Odd "foliose gall" on Greenbark Ceanothus (Ceanothus spinosus, Rhamnaceae) - maybe a Gall Midge (Cecidomyiidae, Diptera)?
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Treebeard: New gall forming on a stem of Coyote Bush (Baccharis pilularis, Asteraceae) - a Gelechiid moth gall?
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Treebeard: Gall on catkin of Coast Live Oak (Quercus agrifolia, Fagaceae) - maybe the Two-horned Gall Wasp (Dryocosmus dubiosus, Cynipidae, Hymenoptera)?
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Treebeard: Bumblebee (Bombus, Hymenoptera) on a "witches' broom" gall of native Toyon (Heteromeles arbutifolia, Rosaceae)
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Treebeard: Galled leaves of native Nuttall's Snowberry (Symphoricarpos mollis, Caprifoliaceae)
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Treebeard: Unknown leaf gall on Coast Live Oak (Quercus agrifolia, Fagaceae)
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Treebeard: Red leaves on Bigberry Manzanita (Arctostaphylos glauca, Ericaceae) maybe a fungus - Exobasidium vacinii?
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Treebeard: Leaf galls of the Manzanita Leaf Gall Aphid (Tamalia coweni, Aphididae, Homoptera) on Bigberry Manzanita (Arctostaphylos glauca, Ericaceae)
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Treebeard: Tiny wasp galls on staminate catkin of Coast Live Oak (Quercus agrifolia, Fagaceae) - maybe the Two-horned Gall Wasp (Dryocosmus dubiosus, Cynipidae, Hymenoptera)?
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Treebeard: Developing wasp galls on Scrub Oak (Quercus berberidifolia, Fagaceae)
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Treebeard: Interesting galls on flowers of Common Fiddleneck (Amsinkia menziesii var. intermedia) caused by the Fiddleneck Gall Nematode (Anguina amsinckia)
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Treebeard: Not a mushroom, but the spring gall of the Live Oak Apple Gall Wasp (Callirhytis quercuspomiformis, Cynipidae, Hymenoptera)
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Treebeard: Unknown galls on new leaves of Scrub Oak (Quercus wislizenii var. frutescens, Fagaceae) - looks like the Succulent Gall Wasp (Neuroterus fragilis, Cynipidae, Hymenoptera)
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Treebeard: Tiny galls on a catkin of Coast Live Oak (Quercus agrifolia, Fagaceae) - maybe Dryocosmus dubiosus (Cynipidae, Hymenoptera)?