Microseris bigelovii is a species of flowering plant in the family Asteraceae known by the common name coastal silverpuffs.

It is an annual herb growing up to 60 centimeters tall from a basal rosette of erect leaves; there is no true stem.

The fruit is an achene with a brown, hairy to hairless body a few millimeters long.

At the tip of the body is a large pappus made up of five long, bristly scales.

[1] Its distribution is scattered, and the northernmost populations are genetically distinct from the southernmost.