Taxon Details

Agave utahensis var. eborispina

ivory-spined agave

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Photo of Agave utahensis var. eborispina

Taxon Summary:

Agave utahensis var. eborispina, commonly known as ivory-spined agave, is a perennial leaf in the Agavaceae that is found in California and elsewhere. It occurs within Mojavean desert scrub (carbonate, and rocky slopes), growing at elevations from 945 to 1370 meters. Agave utahensis var. eborispina is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Agave utahensis (Englem.) Gentry var. eborispina (Hester) Breitung
Common Name: ivory-spined agave
Family:	Agavaceae
Element Code:	PMAGA010S1
USDA Plants Symbol:	AGUTE
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G4T3
State Rank:	S2
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2023-06-06

Ecology and Life History

Lifeform: perennial leaf

Blooming Period: May-Jun

Elevation:
945 - 1370 meters
3100 - 4495 feet

General Habitats:

Mojavean desert scrub (carbonate, rocky slopes)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known in CA only from the Nopah Range. See A. utahensis in The Jepson Manual (1993). On watch list in NV. See Cactus and Succulent Journal 14:131 (1943) for original description and 32:20 (1960) for revised nomenclature.
Threats: Threatened by horticultural collecting.
Taxonomy:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					5
A	B	C	D	X	U
1	0	0	0	0	4

Occurrence Status:
Historical >20 Years	4
Recent <=20 Years	1

Presence:
Presumed Extant	5
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Nevada (NV)

California Counties and Islands: Name (Code)
Inyo (INY)

Quads: Name (Quad Code)
North of Tecopa Pass (3511681), Twelvemile Spring (3611612)?

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory