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Taxon  Report  
Micranthes howellii  (Greene) Small
Howell's saxifrage
Micranthes howellii is a perennial herb that is native to California, and also found in Oregon.
also called Saxifraga howellii
California Rare Plant Rank: 4.3 (limited distribution).
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~46 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Micranthes
Family: Saxifragaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands: Equally likely to occur in wetlands and non wetlands

Ultramafic affinity: 3.8 - broad endemic / strong indicator

Communities: Foothill Woodland, wetland-riparian

Name Status:
Accepted by JEF + CNPS

Alternate Names:
JEF + CNPSSaxifraga howellii
PLANTSSaxifraga howellii
Information about  Micranthes howellii from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

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ID Tips on PlantID.net

[Wikipedia] Range, Habitat, Description: Micranthes howellii (formerly Saxifraga howellii) is a species of saxifrage[1] known by the common name Howell's saxifrage.[2] It is endemic to the Klamath Mountains of southern Oregon and northern California, where it grows in moist, rocky habitat. It is a perennial herb growing from a caudex, usually with a rhizome system. It produces a basal rosette of leaves with rounded or oval blades edged with dull or sharp teeth or scalloping. Each leaf is up to 6 centimeters long, thick and fleshy, and borne on a short petiole. The inflorescence arises on an erect peduncle up to 20 centimeters tall. An array of branches bear several flowers with small white petals. (link added by Mary Ann Machi)

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/20/2024).