The two varieties are geographically isolated: Obtusifolium is confined to coastal maritime chaparral in pockets from Laguna Beach south. Fasciculatum is the common and often dominant component of drier and warmer inland chaparral.

Fasciculatum has slightly larger and longer leaves, which taper evenly along their profile from base to tip. Obtusifolium leaves are very slightly broader at the tip than at the base (obtuse)

Fasciculatum is a somewhat larger plant.

Obtusifolium often displays more cinnamon color in its trunk and bark.

© Ron Vanderhoff