Taxon Report

Chorizanthe douglasii Benth.

Douglas' spineflower

Print Report


  Classification
Scientific Name:
 Chorizanthe douglasii Benth.
Common Name:
 Douglas' spineflower
Family: Polygonaceae
Element Code: PDPGN040A0
USDA Plants Symbol: CHDO2
Synonyms/Other Names:

Ecology and Life History
Lifeform: annual herb
Blooming Period: Apr-Jul Apr-Jul
Elevation: 55-1600 (180-5250)
General Habitats: Chaparral, Cismontane woodland, Coastal scrub, Lower montane coniferous forest, Valley and foothill grassland
Microhabitat: Gravelly (sometimes), Sandy (sometimes)
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 4.3
Global Rank: G4
State Rank:
 S4
State List: None
Fed List: None
Other Status: SB_SBBG
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:  True
California Counties and Islands: Name (Code)
Monterey (MNT), San Benito (SBT), San Luis Obispo (SLO), Santa Clara (SCL)
Quads: Name (Quad Code)
Alder Peak (3512183), Atascadero (3512046), Bear Canyon (3612113), Bickmore Canyon (3612152), Big Sur (3612137), Burnett Peak (3512172), California Valley (3512031), Camatta Canyon (3512053), Camatta Ranch (3512043), Carmel Valley (3612146), Chews Ridge (3612135), Chualar (3612155), Cone Peak (3612114), Cosio Knob (3612112), Creston (3512055), Estrella (3512065), Greenfield (3612132), Hernandez Reservoir (3612047), Jolon (3512182), Junipero Serra Peak (3612124), La Panza (3512032), La Panza Ranch (3512042), Lime Mountain (3512068), Lopez Mtn. (3512035), Lopez Point (3612115), Marina (3612167), Monterey (3612158), Morgan Hill (3712126), Mount Johnson (3612153), Mt. Carmel (3612147), North Chalone Peak (3612142), Partington Ridge (3612126), Pozo Summit (3512033), Rana Creek (3612145), Salinas (3612166), San Benito (3612151), San Lucas (3612121), San Simeon (3512162), Santa Margarita (3512045), Santa Margarita Lake (3512034), Seaside (3612157), Shedd Canyon (3512054), Soberanes Point (3612148), Spreckels (3612156), Sycamore Flat (3612134), Tassajara Hot Springs (3612125), Thompson Canyon (3612122), Tierra Redonda Mountain (3512078), Topo Valley (3612141), Ventana Cones (3612136), Wilson Corner (3512044)

Threat List Data from the CNDDB

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

Notes
Possibly threatened by non-native plants. See Phytologia 66(2):118-120 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].