Taxon Report

Iliamna latibracteata Wiggins

California globe mallow

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©2013 Scot Loring

Taxon Summary

Iliamna latibracteata, commonly known as California globe mallow, is a perennial herb in the Malvaceae that is found in California and elsewhere. It occurs within Chaparral (montane), Lower montane coniferous forest, North Coast coniferous forest (mesic), and Riparian scrub (streambanks), growing at elevations from 60 to 2000 meters. Iliamna latibracteata is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification
Scientific Name:
 Iliamna latibracteata Wiggins
Common Name:
 California globe mallow
Family: Malvaceae
Element Code: PDMAL0K040
USDA Plants Symbol: ILLA2
Synonyms/Other Names:

Ecology and Life History
Lifeform: perennial herb
Blooming Period: Jun-Aug Jun-Aug
Elevation: 60-2000 (195-6560)
General Habitats: Chaparral, Lower montane coniferous forest, North Coast coniferous forest, Riparian scrub
Microhabitat: Burned areas (often)
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G2G3
State Rank:
 S2
State List: None
Fed List: None
Other Status: SB_CalBG/RSABG; USFS_S
CRPR Changes:
  • changed from 4 to 1B on 2004-12-15

Occurrence Data from the CNDDB
Total Occurrences: 42
Element Occurrence Ranks:
   Excellent (A) 2
   Good (B) 8
   Fair (C) 6
   Poor (D) 1
   None (X) 0
   Unknown (U) 25

Location
California Endemic:  False
California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Trinity (TRI)
Quads: Name (Quad Code)
Takilma (4212315), Blake Mountain (4012355), Blue Lake (4012388), Board Camp Mtn. (4012366), Denny (4012384), Fern Canyon (4112441), Forest Glen (4012333), French Camp Ridge (4112327), Grouse Mtn. (4012376), Hopkins Butte (4112325), Korbel (4012378), Lord-ellis Summit (4012387), Mad River Buttes (4012367), Maple Creek (4012377), Orick (4112431), Polar Bear Mtn. (4112385), Salyer (4012385), Sims Mountain (4012365), Sportshaven (4012344), Tish Tang Point (4112315), Willow Creek (4012386)

Threat List Data from the CNDDB

Threat List Total: 9
EOs with Threat Listed: Total EOs % of EOs
28 67 %
Other 17 40%
Logging 16 38%
Grazing 8 19%
Foot traffic/trampling 6 14%
Recreational use (non-ORV) 5 11%
Non-native plant impacts 4 9%
Wood cutting or brush clearing 3 7%
Improper burning regime 2 4%
Road/trail construction/maint. 1 2%

Notes
Endangered in OR.
Threats:
Possibly threatened by fire suppression and grazing.
Taxonomy:

Selected References

Proposed Change from California Rare Plant Rank 4 to 1B
Contributions from the Dudley Herbarium 1:255 (1936)
Iliamna latibracteata profile for potential Species of Conservation Concern evaluation (2018)
USFS Potential Species of Conservation Concern Profile
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].