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: 71 Lake: 25 Plumas: 37 Solano: 6
Alpine: 44 Lassen: 26 Riverside: 22 Sonoma: 130
Amador: 7 Los Angeles: 85 San Benito: 42 Stanislaus: 1
Butte: 23 Madera: 7 San Bernardino: 69 Sutter: 5
Calaveras: 2 Marin: 274 San Diego: 16 Tehama: 20
Colusa: 4 Mariposa: 26 San Francisco: 14 Trinity: 73
Contra Costa: 62 Mendocino: 73 San Luis Obispo: 94 Tulare: 37
Del Norte: 156 Modoc: 24 San Mateo: 234 Tuolumne: 38
El Dorado: 48 Mono: 106 Santa Barbara: 64 Ventura: 40
Fresno: 21 Monterey: 107 Santa Clara: 88 Yolo: 3
Glenn: 6 Napa: 19 Santa Cruz: 38 Yuba: 2
Humboldt: 149 Nevada: 29 Shasta: 60
Inyo: 105 Orange: 35 Sierra: 16
Kern: 16 Placer: 41 Siskiyou: 173

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: 05/15/2024).