Taxon Report

Claytonia parviflora Douglas ex Hooker ssp. grandiflora J.M. Miller & K. Chambers

streambank spring beauty

Print Report


Taxon Summary

Claytonia parviflora ssp. grandiflora, commonly known as streambank spring beauty, is a annual herb in the Montiaceae that is found only in California. It occurs within Cismontane woodland, growing at elevations from 250 to 1200 meters. Claytonia parviflora ssp. grandiflora is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

  Classification
Scientific Name:
 Claytonia parviflora Douglas ex Hooker ssp. grandiflora J.M. Miller & K. Chambers
Common Name:
 streambank spring beauty
Family: Montiaceae
Element Code: PDPOR030D1
USDA Plants Symbol: CLPAG4
Synonyms/Other Names:

Ecology and Life History
Lifeform: annual herb
Blooming Period: Feb-May Feb-May
Elevation: 250-1200 (820-3935)
General Habitats: Cismontane woodland
Microhabitat: Rocky
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 4.2
Global Rank: G5T3
State Rank:
 S3
State List: None
Fed List: None
Other Status:
CRPR Changes:
  • added to 4.2 on 2006-09-29

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

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Amador (AMA), Butte (BUT), Calaveras (CAL), El Dorado (ELD), Fresno (FRE), Kern (KRN), Madera (MAD), Placer (PLA), Tulare (TUL), Tuolumne (TUO)
Quads: Name (Quad Code)
Ackerson Mtn. (3711977), Angels Camp (3812015), Auburn (3812181), Aukum (3812056), Berry Creek (3912164), Calaveritas (3812025), Camino (3812066), Case Mountain (3611847), Cedar Grove (3611876), Cherry Lake South (3711988), Cinco (3511831), Colfax (3912018), Coloma (3812078), Columbia (3812014), Columbia Se (3812013), Democrat Hot Springs (3511856), Fiddletown (3812057), Fort Mountain (3812034), Garden Valley (3812077), General Grant Grove (3611868), Giant Forest (3611857), Greenwood (3812088), Groveland (3712072), Humphreys Station (3611984), Jawbone Ridge (3712071), Millerton Lake East (3711915), Mokelumne Hill (3812036), Moses Mtn. (3611836), Murphys (3812024), North Fork (3711925), Paradise East (3912175), Patterson Mtn. (3611981), Piedra (3611974), Pine Flat Dam (3611973), Pine Grove (3812046), Placerville (3812067), Rail Road Flat (3812035), Sacate Ridge (3611982), San Andreas (3812026), Shadequarter Mtn. (3611858), Sly Park (3812065), Stanislaus (3812023), The Sphinx (3611875), Trimmer (3611983), Twain Harte (3812012), Verplank Ridge (3611971), Wren Peak (3611877)

Threat List Data from the CNDDB

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

Notes
Threatened by development. Possibly threatened by road maintenance and non-native plants. See Novon 3: 270 (1993) for original description and Systematic Botany Monographs 78: 114-116 (2006) for taxonomic treatment.
Threats:
Taxonomy:

Selected References

CRPR List Addition on 2006-09-29
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 9 April 2025].