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Distribution by County   9593    
Platanthera dilatata  (Pursh) Lindl. ex Beck  var. leucostachys  (Lindl.) Luer
Sierra bog orchid, White Flowered Bog-Orchid
Platanthera dilatata var. leucostachys is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 1 Inyo: 42 Nevada: 50 Siskiyou: 90
Alpine: 21 Kern: 1 Placer: 39 Sonoma: 4
Amador: 9 Lake: 9 Plumas: 101 Tehama: 30
Butte: 34 Lassen: 19 Riverside: 15 Trinity: 52
Calaveras: 5 Los Angeles: 13 San Bernardino: 36 Tulare: 77
Colusa: 3 Madera: 11 San Diego: 5 Tuolumne: 33
Del Norte: 22 Marin: 20 San Luis Obispo: 8 Ventura: 3
El Dorado: 66 Mariposa: 32 San Mateo: 1 Yuba: 5
Fresno: 89 Mendocino: 12 Santa Barbara: 1
Glenn: 8 Modoc: 19 Shasta: 39
Humboldt: 58 Mono: 57 Sierra: 22

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 06/13/2026).