Taxon Report

Greeneocharis circumscissa (Hook. & Arn.) Ryd. var. rosulata (J.T. Howell) Hasenstab & M.G. Simpson

rosette cushion cryptantha

Print Report

Taxon Summary

Greeneocharis circumscissa var. rosulata, commonly known as rosette cushion cryptantha, is a annual herb in the Boraginaceae that is found only in California. It occurs within Alpine boulder and rock field, and Subalpine coniferous forest, growing at elevations from 2950 to 3660 meters. Greeneocharis circumscissa var. rosulata is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Greeneocharis circumscissa (Hook. & Arn.) Ryd. var. rosulata (J.T. Howell) Hasenstab & M.G. Simpson
Common Name:	rosette cushion cryptantha
Family:	Boraginaceae
Element Code:	PDBOR0A0G3
USDA Plants Symbol:
Synonyms/Other Names:	Cryptantha circumscissa var. rosulata

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Jul-Aug	Jul-Aug
Elevation:	2950-3660 (9680-12010)
General Habitats:	Alpine boulder and rock field, Subalpine coniferous forest
Microhabitat:	Granitic, Gravelly
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G5T2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	USFS_S
CRPR Changes:	added to 1B.2 on 2008-11-20

Occurrence Data from the CNDDB


Total Occurrences:	8
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	7

Location


California Endemic: True
California Counties and Islands: Name (Code)
Inyo (INY), Tulare (TUL)
Quads: Name (Quad Code)
Cirque Peak (3611842), Johnson Peak (3611843), Moses Mtn. (3611836), Mt. Langley (3611852), Olancha (3611831), Silver City (3611846)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	2	25 %
Foot traffic/trampling	2	25%
Grazing	1	12%

Notes



Threatened by foot traffic and trampling. See Leaflets of Western Botany 6(5):102-105 (1951) for original description, and Systematic Botany 37(3):738-757 (2012) for revised nomenclature.
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 29 January 2025].