CNPS

CNPS Rare Plant Inventory



Taxon Details

Monardella sinuata ssp. sinuata

southern curly-leaved monardella

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Photo of Monardella sinuata ssp. sinuata
© 2017 Keir Morse 		Photo of Monardella sinuata ssp. sinuata
© 2012 CNPS, San Luis Obispo Chapter 		Photo of Monardella sinuata ssp. sinuata
© 2017 Keir Morse

Taxon Summary:

Monardella sinuata ssp. sinuata, commonly known as southern curly-leaved monardella, is a annual herb in the Lamiaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Coastal dunes, and Coastal scrub (openings), growing at elevations from 0 to 300 meters. Monardella sinuata ssp. sinuata is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification

Scientific Name:
Monardella sinuata Elvin & A.C. Sanders ssp. sinuata
Common Name:
southern curly-leaved monardella
Family: Lamiaceae
Element Code: PDLAM18161
USDA Plants Symbol:
Synonyms/Other Names:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G3T2
State Rank:
 S2
Other Status: SB_UCSC
CRPR Changes:
added to 1B.2 on 2013-12-31
Add Date: 2013-12-31
Date Edited: 2022-12-06

  Ecology and Life History

Lifeform: annual herb
Blooming Period: Apr-Sep
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Elevation:
0 - 300 meters
0 - 985 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
  • Coastal dunes
  • Coastal scrub (openings)
Microhabitat Details:
Microhabitat:
  • Sandy

  Notes

Notes:
Several historical occurrences are presumed extirpated by urbanization and non-native plants. Seriously threatened by veldt grass (Ehrharta calycina) invasion. Also threatened by development, habitat loss, habitat fragmentation, vehicles, foot traffic, and recreational activities. Possibly threatened by climate shifts. Previously included in M. undulata. Similar to M. breweri and M. douglasii. See Novon 19(3):315-345 (2009) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 3
Total EOs % of EOs
EOs with Threat Listed: 7 19 %
THREAT LIST:
Non-native plant impacts 6 16%
Other 2 5%
Development 1 2%

  Occurrence Data from the CNDDB

Total Occurrences: 36
Element Occurrence Ranks:
A B C D X U
0 4 0 0 1 31
Occurrence Status:
Historical >20 Years 22
Recent <=20 Years 14
Presence:
Presumed Extant 35
Possibly Extirpated 0
Presumed Extirpated 1

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Luis Obispo (SLO), Santa Barbara (SBA)
Quads: Name (Quad Code)
Arroyo Grande NE (3512025), Casmalia (3412075), Foxen Canyon (3412072), Lompoc (3412064), Los Alamos (3412063), Manzanita Mtn. (3412081), Morro Bay South (3512037), Oceano (3512015)*, Orcutt (3412074), Pismo Beach (3512026), San Simeon (3512162)?*, Sisquoc (3412073), Surf (3412065), Tepusquet Canyon (3412082), Twitchell Dam (3412083), Zaca Creek (3412062), Zaca Lake (3412071)
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

CNPS Status Review: CRPR List Addition on 2013-12-31

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Suggested Citation:
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].
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