Taxon Report

Chorizanthe aphanantha K.M. Nelson & D.J. Keil

Irish Hills spineflower

Print Report


© 2019 Keir Morse

  Classification
Scientific Name:
 Chorizanthe aphanantha K.M. Nelson & D.J. Keil
Common Name:
 Irish Hills spineflower
Family: Polygonaceae
Element Code: PDPGN04110
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History
Lifeform: annual herb
Blooming Period: Apr-Jun Apr-Jun
Elevation: 100-370 (330-1215)
General Habitats: Chaparral, Coastal scrub
Microhabitat: Gravelly, Rocky, Serpentine
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.1
Global Rank: G1
State Rank:
 S1
State List: None
Fed List: None
Other Status: BLM_S; SB_SBBG
CRPR Changes:
  • added to 1B.1 on 2019-06-12

Occurrence Data from the CNDDB
Total Occurrences: 3
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 3

Location
California Endemic:  True
California Counties and Islands: Name (Code)
San Luis Obispo (SLO)
Quads: Name (Quad Code)
Pismo Beach (3512026), San Luis Obispo (3512036)

Threat List Data from the CNDDB

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

 

Notes
Similar to and co-occurs with C. breweri; differentiated in having perianth 1.5-1.7 mm long (vs. 2-5 mm) and involucre green at flowering (vs. red to purple at flowering in C. breweri).
Threats:
Taxonomy:

Selected References

Proposed Addition to CRPR 1B.1, G1 / S1 (2019)
Madroño 65(4):184-191 (2018)
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].