Species Details

Heuchera maxima

island alumroot

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Photo of Heuchera maxima
© 2014 Steve Matson
Photo of Heuchera maxima
© 2014 Steve Matson
Photo of Heuchera maxima
© 2014 Steve Matson
Lifeform: perennial rhizomatous herb
Blooming Period: Feb-May
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Elevation:
10 - 500 meters
35 - 1640 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral
  • Cismontane woodland
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Rocky
Notes:
Surveys in 1994-1996 have located many new populations. Threatened by feral herbivores on SCZ and SRO islands, and potentially threatened by seabird rookery on ANA Isl.
Threats:
Taxonomy:
Total Occurrences: 25
Element Occurrence Ranks:
A B C D X U
3 5 2 0 0 15
Occurrence Status:
Historical >20 Years 25
Recent <=20 Years 0
Presence:
Presumed Extant 25
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Anacapa Island (3311983), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Cruz Island D (3311984), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081)
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.
Presumed Extant
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