penicillate

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Having or resembling a tuft or brush of fine hairs, as those on caterpillars and certain grasses.

Century Dictionary and Cyclopedia

1. Forming or formed into a little tuft or brush, especially at the end or tip: as, a penicillate tail; the penicillate or brushy tongue of a lory.
2. Provided with a penicillium.
3. Streaky; scratchy; penciled.
4. In entomology, specifically, provided with penicils.
5. In botany, pencil-shaped; consisting of a bundle of hairs resembling those of a hair pencil. Sometimes erroneously used for feather-shaped or feathery.

Wiktionary

1. adj. botany, zoology Having tufts of fine hairs, or in the form of tuft of fine hairs.

GNU Webster's 1913

1. adj. (Biol.) Having the form of pencil; furnished with a pencil of fine hairs; ending in a tuft of hairs like a camel's-hair brush, as the stigmas of some grasses.