[4] The wings are light brown dorsally, and vivid green ventrally, with a broken white postmedial line.

[5] These butterflies can be found in heathlands, road-cuts, coastal dunes, and open sites and clearings in Douglas-fir and ponderosa pine forests.

[2] The larvae have been recorded on broad-leafed lotus and Acmispon nevadensis[2] Adults feed on nectar from these plants, as well as from desert parsley,[2] dogbane, yerba santa, California buckeye, and woolly sunflower.

[6] In 1998 Emmet et al. identified the lectotype for C. dumetorum as the Coastal Green Hairstreak (Callophrys viridis).

In 2012, ICZN Opinion 2291 designated a neotype for C. dumetorum and reverted the above changes.