Taxon Details

Mammillaria grahamii var. grahamii

Graham fishhook cactus

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Taxon Summary:

Mammillaria grahamii var. grahamii, commonly known as Graham fishhook cactus, is a perennial stem in the Cactaceae that is found in California and elsewhere. It occurs within Sonoran desert scrub (gravelly, and rocky), growing at elevations from 300 to 900 meters. Mammillaria grahamii var. grahamii is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Mammillaria grahamii Engelm. var. grahamii
Common Name: Graham fishhook cactus
Family:	Cactaceae
Element Code:	PDCAC0A021
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G4T4
State Rank:	S2
Other Status:	SB_CalBG/RSABG; SB_USDA
CRPR Changes: added to 2.2 on 2010-04-06
Add Date:	2010-04-06
Date Edited:	2021-06-03

Ecology and Life History

Lifeform: perennial stem

Blooming Period: Apr-Sep

Elevation:
300 - 900 meters
985 - 2955 feet

General Habitats:

Sonoran desert scrub (gravelly, rocky)

Microhabitat Details:

Microhabitat:

Notes

Notes: Potentially threatened by road maintenance.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	1	10 %
Road/trail construction/maint.	1	10%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					10
A	B	C	D	X	U
0	0	1	0	0	9

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	2

Presence:
Presumed Extant	10
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), California (CA), New Mexico (NM), Texas (TX)

California Counties and Islands: Name (Code)
San Bernardino (SBD)

Quads: Name (Quad Code)
Gene Wash (3411432), Savahia Peak (3411435), Whipple Mts. SW (3411434), Whipple Wash (3411433)

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