CNPS

CNPS Rare Plant Inventory

Species Details

Plagiobothrys lithocaryus

Mayacamas popcornflower

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  Classification

Scientific Name:
Plagiobothrys lithocaryus (Greene) Jtn.
Common Name:
Mayacamas popcornflower
Family: Boraginaceae
Element Code: PDBOR0V0P0
USDA Plants Symbol: PLLI
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: 1974-01-01
Date Edited: 2022-06-08

  Ecology and Life History

Lifeform: annual herb
Blooming Period: Apr-May
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Elevation:
300 - 450 meters
985 - 1475 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Mesic

  Notes

Notes:
Known only from the type collection by Curran (Lakeport, LAK Co.) in 1884 and an uncertain collection by Purpus (Potter Valley, MEN Co.) in 1899; should be looked for in these areas.
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: 2
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 2
Occurrence Status:
Historical >20 Years 2
Recent <=20 Years 0
Presence:
Presumed Extant 2
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Lake (LAK)*, Mendocino (MEN)?*
Quads: Name (Quad Code)
Lakeport (3912218)*, Potter Valley (3912331)?*, Redwood Valley (3912332)
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 25 April 2024].