Calflora, a 501c3 non-profit
Distribution by County   4213    
Holodiscus microphyllus  Rydb.  var. glabrescens  (Greenm.) F. A. Ley

(not an active name)
Desert ocean spray,   Rock spiraea
Holodiscus microphyllus var. glabrescens is a shrub that is native to California, and also found elsewhere in western North America.
also called Holodiscus discolor var. glabrescens
Record Count by County

Alameda: 75 Lake: 25 Plumas: 37 Solano: 6
Alpine: 42 Lassen: 27 Riverside: 23 Sonoma: 129
Amador: 9 Los Angeles: 86 San Benito: 42 Stanislaus: 1
Butte: 23 Madera: 8 San Bernardino: 70 Sutter: 5
Calaveras: 2 Marin: 278 San Diego: 16 Tehama: 22
Colusa: 4 Mariposa: 26 San Francisco: 14 Trinity: 64
Contra Costa: 65 Mendocino: 76 San Luis Obispo: 91 Tulare: 36
Del Norte: 14 Modoc: 3 San Mateo: 240 Tuolumne: 39
El Dorado: 48 Mono: 108 Santa Barbara: 65 Ventura: 40
Fresno: 25 Monterey: 108 Santa Clara: 90 Yolo: 2
Glenn: 6 Napa: 19 Santa Cruz: 38 Yuba: 2
Humboldt: 107 Nevada: 30 Shasta: 62
Inyo: 106 Orange: 35 Sierra: 16
Kern: 18 Placer: 42 Siskiyou: 33

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/21/2024).