Polystichum lemmonii is endemic to California and restricted to serpentine soils.
Classification & Common Names
- Class: Polypodiopsida
- Family: Dryopteridaceae
- Genus: Polystichum Roth
- Species: Polystichum lemmonii Underw.
- Common name(s): Lemmon's hollyfern, Shasta fern
General Observation Data
- Date: 03-VII-2018
- Habitat: Serpentine influenced northern hardwood forest
- Habit: Terrestrial
- Location: Scott Mountain – – Siskiyou County – California – United States.
- Coordinates: 41°17'33.8"N 122°41'15.8"W
- Elevation: 1700m
You wrote: “Polystichum lemmonii is endemic to California and restricted to serpentine soils.”
In fact this fern also occurs in Oregon, Washington, and British Columbia. There is an enormous population growing on the sperpentine soils of the Ingalls Ophiolite Complex and I would imagine a robust population on the Twin Sisters Ophiolite near Mt Baker as well,
So, not “endemic” to California
You are totally correct. I forgot about those disjunct populations outside its main range that are common with serpentine restricted species. I will update the note to reflect this. Thank you for this keen observation.