galls
Taxons that create galls are listed in their normal taxonomic locations, but I’ve also collected them here for easier browsing based on the host plant. Although some galls are restricted to certain plant species, in most cases here I’ve organized them by host plant genus since the gall species are often more easily distinguished than the plant species.
This page also includes lerps, which look similar to galls.
The most popular references for galls are
Ron Russo’s Field Guide to Plant Galls of California and Other Western States (2007) and
his Plant Galls of the Western States (2021).
An up-to-date internet resource for galls is gallformers.org.
A good online reference is Joyce Gross’s web pages for
oak calls and
non-oak galls.
The Bioblitz Club also has PDF brochures for
spring galls and
fall galls.
Nancy Asquith has tons of additional links on iNaturalist.
beech family
rose family
sunflower family
other hosts
57 observed taxons / 9 unobserved taxons / 22 keys
Chris’s observations: 222 (121 are research grade)
Locations:
- Edgewood Park & Natural Preserve: 25
- Bear Creek Redwoods OSP: 15
- Murray Ranch SP: 14
- Santa Teresa CP: 11
- Mt. Diablo SP: 9
- Coal Creek OSP: 7
- Ansel Adams Wilderness: 6
- Windy Hill OSP: 6
- Almaden Quicksilver CP: 5
- Calero CP: 5
- Coyote Valley OSP: 5
- Lake Chabot RP: 5
- Sibley Volcanic RP: 5
- Sweeney Ridge National Recreation Area: 5
- Waterdog Lake & Open Space: 5
- Castle Rock SP: 4
- Coyote Hills RP: 4
- Fremont Older OSP: 4
- Henry Cowell Redwoods SP: 4
- Jacks Peak CP: 4
- Purisima Creek Redwoods OSP: 4
- Skyline Ridge OSP: 4
- Alum Rock Park, San Jose: 3
- Desolation Wilderness: 3
- Ed R. Levin CP: 3
- Henry Coe SP: 3
- Hidden Villa, Los Altos Hills: 3
- Mt. Madonna SP: 3
- Nisene Marks SP: 3
- Pescadero Creek CP: 3
- Pinnacles NP: 3
- Russian Ridge OSP: 3
- San Pedro Valley CP: 3
- El Corte de Madera OSP: 2
- Joseph D. Grant CP: 2
- McNee Ranch / Montara Mountain SP: 2
- Monte Bello OSP: 2
- Picchetti Ranch OSP: 2
- Portola Redwoods SP: 2
- San Bruno Mountain State & County Park: 2
- Sierra Azul OSP: 2
- UCSC Campus Natural Reserve: 2
- Wunderlich CP: 2
- Coyote Creek Trail
- Dr. Aurelia Reinhardt Redwood RP
- El Sereno OSP
- Garin RP
- Golden Gate National Recreation Area
- Henry Cowell Redwoods SP - Fall Creek Unit
- Huckleberry Botanic RP
- Lexington Reservoir CP
- Rancho Cañada del Oro OSP
- Sanborn CP
- Sierra Vista OSP
- Stevens Creek CP
- Ulistac Natural Area, Santa Clara
Months:
- Jan.: 9
- Feb.: 11
- Mar.: 5
- Apr.: 13
- May: 19
- Jun.: 18
- Jul.: 19
- Aug.: 32
- Sep.: 26
- Oct.: 9
- Nov.: 46
- Dec.: 15
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