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
buckthorn family
other hosts
64 observed taxons / 9 unobserved taxons / 25 keys
Chris’s observations: 332 (198 are research grade)
Locations:
- Edgewood County Park & Natural Preserve: 56
- Bear Creek Redwoods OSP: 15
- Murray Ranch SP: 14
- Calero CP: 11
- Santa Teresa CP: 11
- Sierra Azul; OSP: 11
- Waterdog Lake & Open Space: 9
- Ansel Adams Wilderness: 8
- Coyote Hills RP: 8
- Mt. Diablo SP: 8
- Castle Rock SP: 7
- Coal Creek OSP: 7
- Henry Coe SP: 7
- Joseph D. Grant CP: 7
- San Pedro Valley CP: 7
- Alum Rock Park, San Jose: 6
- Fremont Older OSP: 6
- Windy Hill OSP: 6
- Almaden Quicksilver CP: 5
- Coyote Valley OSP: 5
- Henry Cowell Redwoods SP: 5
- Lake Chabot RP: 5
- Pescadero Creek CP: 5
- Purisima Creek Redwoods OSP: 5
- Sibley Volcanic RP: 5
- Sweeney Ridge National Recreation Area: 5
- Wilder Ranch SP: 5
- Jacks Peak CP: 4
- Nisene Marks SP: 4
- Russian Ridge OSP: 4
- San Bruno Mountain State & County Park: 4
- Skyline Ridge OSP: 4
- Wunderlich CP: 4
- Desolation Wilderness: 3
- Dr. Aurelia Reinhardt Redwood RP: 3
- Ed R. Levin CP: 3
- Hidden Villa, Los Altos Hills: 3
- Lexington Reservoir CP: 3
- Mt. Madonna SP: 3
- Pinnacles NP: 3
- Pulgas Ridge OSP: 3
- Rancho Cañada del Oro OSP: 3
- El Corte de Madera OSP: 2
- Lassen Volcanic NP: 2
- McNee Ranch / Montara Mountain SP: 2
- Monte Bello OSP: 2
- Picchetti Ranch OSP: 2
- Point Lobos SP: 2
- Portola Redwoods SP: 2
- Sierra Vista OSP: 2
- UCSC Campus Natural Reserve: 2
- Butano SP
- Coyote Creek Trail
- Coyote Lake / Harvey Bear Ranch CP
- Dimond Canyon Trail, Oakland
- El Sereno OSP
- Garin RP
- Golden Gate National Recreation Area
- Henry Cowell Redwoods SP - Fall Creek Unit
- Huckleberry Botanic RP
- Pleasanton Ridge RP
- Sanborn CP
- Stevens Creek CP
- Thornewood OSP
- Ulistac Natural Area, Santa Clara
Months:
- Jan.: 14
- Feb.: 13
- Mar.: 6
- Apr.: 22
- May: 39
- Jun.: 35
- Jul.: 28
- Aug.: 34
- Sep.: 39
- Oct.: 26
- Nov.: 58
- Dec.: 18
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