Diplacus johnstonii Calflora

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Taxon Report

Diplacus johnstonii (A.L. Grant) G.L. Nesom

Johnston's monkeyflower

Diplacus johnstonii is an annual herb that is native to California, and endemic (limited) to California.

also called Mimulus johnstonii

California Rare Plant Rank: 4.3 (limited distribution).


	Plant Range Observation Search ~202 records in California Plant Characteristics one or more occurrences within a 7.5-minute quadrangle

Bloom Period

Photos on Calflora


Genus:	Diplacus
Family:	Phrymaceae (Scrophulariaceae)
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Habitat: slopes

Communities: Yellow Pine Forest

Name Status:
Accepted by JEF + CNPS + POWO

Alternate Names:


JEF + CNPS	Mimulus johnstonii

Information about Diplacus johnstonii from other sources


Nursery availability from CNPLX Commercial availability unknown. Jepson eFlora Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape CNPS Inventory: 4.3 Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
[wikipedia] Distribution, Habitat: Distribution It is endemic to the Transverse Ranges of southern California, where it is known only from the San Gabriel and San Bernardino Mountains. It grows in rocky and disturbed habitat, such as roadsides and scree. (link added by Mary Ann Machi) photos / record / common / links

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 03/30/2025).