The small herbarium contains approximately 700 vascular plant specimens and over 300 bryophyte and lichen specimens dating from the early 1990s. The collection covers all the lands managed by the Bureau of Land Management Arcata Field Office in California, as well as other nearby public lands. Nearly all of the specimens were collected in Humboldt, Mendocino, or Trinity Counties. The collection includes some endangered and listed species as well as some potential range extensions and other species of interest.