Taxon Report

Diplacus parviflorus Greene

island bush monkeyflower

Print Report

Taxon Summary

Diplacus parviflorus, commonly known as island bush monkeyflower, is a perennial evergreen shrub in the Phrymaceae that is found only in California. It occurs within Chaparral, Closed-cone coniferous forest, Coastal bluff scrub, and Coastal scrub, growing at elevations from 3 to 535 meters. Diplacus parviflorus is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Diplacus parviflorus Greene
Common Name:	island bush monkeyflower
Family:	Phrymaceae
Element Code:	PDSCR22030
USDA Plants Symbol:	DIPA10
Synonyms/Other Names:	Mimulus flemingii Mimulus parviflorus (Greene) A.L. Grant

Ecology and Life History


Lifeform:	perennial evergreen shrub
Blooming Period: Mar-Oct	Mar-Oct
Elevation:	3-535 (10-1755)
General Habitats:	Chaparral, Closed-cone coniferous forest, Coastal bluff scrub, Coastal scrub
Microhabitat:	Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G4
State Rank:	S4
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG; SB_CRES
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Los Angeles (LAX), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Anacapa Island (3311983), San Clemente Island Central (3211874), San Clemente Island North (3211885), San Clemente Island South (3211873), San Miguel Island East (3312083), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Cruz Island D (3311984), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081), Santa Rosa Island South (3312071), Santa Rosa Island West (3312082)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Increasing on SCZ Isl. after reduction of feral sheep population. See Phytoneuron 2012-39:1-60 (2012) for revised nomenclature, and Phytoneuron 2012-45:1-20 (2012) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 6 November 2025].