CNPS

CNPS Rare Plant Inventory

Species Details

Aristocapsa insignis

Indian Valley spineflower

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  Classification

Scientific Name:
Aristocapsa insignis (Curran) Rev. & Hardham
Common Name:
Indian Valley spineflower
Family: Polygonaceae
Element Code: PDPGN0U010
USDA Plants Symbol: ARIN12
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G1
State Rank:
 S1
Other Status:
CRPR Changes:
Add Date: 1980-01-01
Date Edited: 2021-05-26

  Ecology and Life History

Lifeform: annual herb
Blooming Period: May-Sep
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Elevation:
300 - 600 meters
985 - 1970 feet
General Habitats:
  • Cismontane woodland (sandy)
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Threatened by development. See Bulletin of the California Academy of Sciences 1:275 (1885) for original description, Great Basin Naturalist Memoirs 2:169-190 (1978) for taxonomic treatment, and Phytologia 66(2):83-88 (1989) for revised nomenclature and taxonomic treatment.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 1
Total EOs % of EOs
EOs with Threat Listed: 1 20 %
THREAT LIST:
Dam/Inundation 1 20%

  Occurrence Data from the CNDDB

Total Occurrences: 5
Element Occurrence Ranks:
A B C D X U
0 0 0 0 1 4
Occurrence Status:
Historical >20 Years 4
Recent <=20 Years 1
Presence:
Presumed Extant 4
Possibly Extirpated 1
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Monterey (MNT), San Luis Obispo (SLO)
Quads: Name (Quad Code)
Bryson (3512171), Camatta Ranch (3512043), Cosio Knob (3612112), La Panza Ranch (3512042), Lime Mountain (3512068), Pebblestone Shut-in (3512161), San Miguel (3512076), Tierra Redonda Mountain (3512078)
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
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 19 April 2024].