Taxon Report

Mirabilis greenei Wats.

Greene's four o'clock

Print Report

Taxon Summary

Mirabilis greenei, commonly known as Greene's four o'clock, is a perennial herb in the Nyctaginaceae that is found only in California. It occurs within Cismontane woodland, and Pinyon and juniper woodland, growing at elevations from 300 to 1065 meters. Mirabilis greenei is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification


Scientific Name:	Mirabilis greenei Wats.
Common Name:	Greene's four o'clock
Family:	Nyctaginaceae
Element Code:	PDNYC0A0N0
USDA Plants Symbol:	MIGR6
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Jun	May-Jun
Elevation:	300-1065 (985-3495)
General Habitats:	Cismontane woodland, Pinyon and juniper woodland
Microhabitat:	Gravelly, Talus
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
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)
Siskiyou (SIS)
Quads: Name (Quad Code)
Copco (4112283), Iron Gate Reservoir (4112284)

Threat List Data from the CNDDB


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

Notes



See Proceedings of the American Academy of Arts and Sciences 12:253 (1876) for original description, and Madroño 25(3):113-132 (1978) 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 5 November 2025].