Found in western parts of north America (south-west Canada, western USA, and north-west Canada) in woodlands. Thorne et al. (1993) discuss the biogeography of the genus.


Add new comment

You must have Javascript enabled to use this form.
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith