CNPS

CNPS Rare Plant Inventory

Species Details

Cirsium praeteriens

lost thistle

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  Classification

Scientific Name:
Cirsium praeteriens J.F. Macbride
Common Name:
lost thistle
Family: Asteraceae
Element Code: PDAST2E2B0
USDA Plants Symbol: CIPR2
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1A
Fed List: None
State List: None
Global Rank: GX
State Rank:
 SX
Other Status:
CRPR Changes:
Add Date: 2001-01-01
Date Edited: 2022-12-06

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jun-Jul
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Elevation:
0 - 100 meters
0 - 330 feet
General Habitats:
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Known from only two collections from Palo Alto (last in 1901). Perhaps represents a casual introduction from the Old World. Not in The Jepson Manual. See Contributions from the Gray Herbarium 53:19 (1918) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 %
THREAT LIST:
No threats

  Occurrence Data from the CNDDB

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

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Mateo (SMT), Santa Clara (SCL)*
Quads: Name (Quad Code)
Palo Alto (3712242)*
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. 2023. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 22 September 2023].