Taxon Report

Cleomella hillmanii A. Nelson var. hillmanii

Hillman's cleomella

Print Report

Taxon Summary

Cleomella hillmanii var. hillmanii, commonly known as Hillman's cleomella, is a annual herb in the Cleomaceae that is found in California and elsewhere. It occurs within Chenopod scrub, and Great Basin scrub, growing at elevations from 1220 to 1220 meters. Cleomella hillmanii var. hillmanii is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Cleomella hillmanii A. Nelson var. hillmanii
Common Name:	Hillman's cleomella
Family:	Cleomaceae
Element Code:	PDCPP04030
USDA Plants Symbol:
Synonyms/Other Names:	Cleomella hillmanii

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	1220-1220 (4005-4005)
General Habitats:	Chenopod scrub, Great Basin scrub
Microhabitat:	Clay
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4G5T4T5
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	5
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	4

Location


California Endemic: False
California Counties and Islands: Name (Code)
Lassen (LAS)
Quads: Name (Quad Code)
Flanigan (4011928), Calneva Lake (4012021), Spencer Creek (4012031)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	3	60 %
Other	3	60%

Notes



Not in TJM (1993). See Proceedings of the Biological Society of Washington 18:171 (1905) for original description.
Threats:

Taxonomy:
Not in TJM (1993).

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 17 November 2025].