Taxon Report

Stipa diegoensis Swallen

San Diego County needle grass

Print Report


  Classification
Scientific Name:
 Stipa diegoensis Swallen
Common Name:
 San Diego County needle grass
Family: Poaceae
Element Code: PMPOA5X0B0
USDA Plants Symbol:
Synonyms/Other Names:
  • Achnatherum diegoense (Swallen) Barkworth

Ecology and Life History
Lifeform: perennial herb
Blooming Period: Feb-Jun Feb-Jun
Elevation: 10-800 (35-2625)
General Habitats: Chaparral, Coastal scrub
Microhabitat: Mesic (often), Rocky
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 4.2
Global Rank: G4
State Rank:
 S4
State List: None
Fed List: None
Other Status: SB_CRES
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 0
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 0

Location
California Endemic:  False
California Counties and Islands: Name (Code)
San Diego (SDG), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Alpine (3211677), Anacapa Island (3311983), Del Mar (3211782), Dulzura (3211667), El Cajon (3211678), Encinitas (3311713), Imperial Beach (3211751), Jamul Mountains (3211668), La Jolla (3211772), National City (3211761), Otay Mesa (3211658), Otay Mountain (3211657), San Miguel Island East (3312083), San Nicolas Island (3311924), San Vicente Reservoir (3211688), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Cruz Island D (3311984), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081), Santa Rosa Island South (3312071), Santa Rosa Island West (3312082), Tecate (3211656)

Threat List Data from the CNDDB

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

Notes
See Madroño 33(4):309-310 (1986) for distributional information, and Phytologia 74(1):1-25 (1993) 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 8 January 2025].