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
62 observed taxons / 9 unobserved taxons / 25 keys
Chris’s observations: 271 (163 are research grade)
Locations:
- Edgewood Park & Natural Preserve: 41
- Bear Creek Redwoods OSP: 15
- Santa Teresa CP: 11
- Calero CP: 10
- Ansel Adams Wilderness: 8
- Mt. Diablo SP: 8
- Murray Ranch SP: 8
- Waterdog Lake & Open Space: 8
- Henry Coe SP: 7
- Joseph D. Grant CP: 7
- Coyote Hills RP: 6
- Sierra Azul; OSP: 6
- Windy Hill OSP: 6
- Almaden Quicksilver CP: 5
- Alum Rock Park, San Jose: 5
- Coyote Valley OSP: 5
- Fremont Older OSP: 5
- Purisima Creek Redwoods OSP: 5
- San Pedro Valley CP: 5
- Sweeney Ridge National Recreation Area: 5
- Castle Rock SP: 4
- Coal Creek OSP: 4
- Henry Cowell Redwoods SP: 4
- Jacks Peak CP: 4
- Lake Chabot RP: 4
- Russian Ridge OSP: 4
- Sibley Volcanic RP: 4
- Skyline Ridge OSP: 4
- Desolation Wilderness: 3
- Ed R. Levin CP: 3
- Hidden Villa, Los Altos Hills: 3
- Mt. Madonna SP: 3
- Nisene Marks SP: 3
- Pescadero Creek CP: 3
- Pinnacles NP: 3
- Pulgas Ridge OSP: 3
- Rancho Cañada del Oro OSP: 3
- Wunderlich CP: 3
- Dr. Aurelia Reinhardt Redwood RP: 2
- El Corte de Madera OSP: 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 Vista OSP: 2
- UCSC Campus Natural Reserve: 2
- 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
- Lexington Reservoir CP
- Pleasanton Ridge RP
- Point Lobos SP
- Sanborn CP
- Stevens Creek CP
- Thornewood OSP
- Ulistac Natural Area, Santa Clara
Months:
- Jan.: 12
- Feb.: 13
- Mar.: 6
- Apr.: 21
- May: 38
- Jun.: 23
- Jul.: 24
- Aug.: 25
- Sep.: 35
- Oct.: 8
- Nov.: 49
- Dec.: 17
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