Taxon Report

Harpagonella palmeri Gray

Palmer's grapplinghook

Print Report

© 2015 Keir Morse

Classification


Scientific Name:	Harpagonella palmeri Gray
Common Name:	Palmer's grapplinghook
Family:	Boraginaceae
Element Code:	PDBOR0H010
USDA Plants Symbol:	HAPA7
Synonyms/Other Names:	Pectocarya palmeri

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Mar-May	Mar-May
Elevation:	20-955 (65-3135)
General Habitats:	Chaparral, Coastal scrub, Valley and foothill grassland
Microhabitat:	Clay, Openings
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G4
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG; SB_CRES
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	57
Element Occurrence Ranks:
Excellent (A)	5
Good (B)	11
Fair (C)	5
Poor (D)	1
None (X)	5
Unknown (U)	30

Location


California Endemic: False
California Counties and Islands: Name (Code)
Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Diego (SDG)
Quads: Name (Quad Code)
Alberhill (3311764), Alpine (3211677), Bachelor Mtn. (3311751), Barrett Lake (3211666), Black Star Canyon (3311776), Bonsall (3311732), Canada Gobernadora (3311755), Dana Point (3311746), Del Mar (3211782), Dulzura (3211667), Earthquake Valley (3311614), El Cajon (3211678), El Cajon Mtn. (3211687), Encinitas (3311713), Imperial Beach (3211751), In-ko-pah Gorge (3211661), Jacumba (3211662), Jamul Mountains (3211668), La Jolla (3211772), La Mesa (3211771), Laguna Beach (3311757), Lake Elsinore (3311763), Lake Mathews (3311774), Las Pulgas Canyon (3311734), Margarita Peak (3311744), Mint Canyon (3411844), Morro Hill (3311733), Mt. Wilson (3411821), Murrieta (3311752), National City (3211761), Newhall (3411845), Oat Mountain (3411835), Otay Mesa (3211658), Pala (3311731), Pasadena (3411822), Pechanga (3311741), Potrero (3211655), Poway (3211781), Ramona (3311617), Ranchita (3311625), Rancho Santa Fe (3311712), Romoland (3311762), Sage (3311658), San Clemente (3311745), San Fernando (3411834), San Juan Capistrano (3311756), San Luis Rey (3311723), San Marcos (3311722), San Vicente Reservoir (3211688), Santa Catalina East (3311833), Santa Catalina North (3311844), Santa Catalina South (3311834), Santa Catalina West (3311845), Santa Susana (3411836), Steele Peak (3311773), Temecula (3311742), Vail Lake (3311648), Val Verde (3411846), Viejas Mountain (3211676), Warm Springs Mountain (3411855), Wildomar (3311753), Winchester (3311761)

Threat List Data from the CNDDB


Threat List Total:	12
EOs with Threat Listed:	Total EOs	% of EOs
	41	72 %
Development	32	56%
Road/trail construction/maint.	8	14%
Agriculture	5	8%
Non-native plant impacts	4	7%
Grazing	3	5%
Recreational use (non-ORV)	3	5%
Mining	2	3%
ORV activity	2	3%
Foot traffic/trampling	2	3%
Disking	1	1%
Military operations	1	1%
Surface water diversion	1	1%

Notes



Inconspicuous and easily overlooked. Threatened by development, trampling, non-native plants, and agriculture.
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 7 January 2025].