penicillate

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Having or forming a tuft or brush of fine hairs.

from The Century Dictionary.

• 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.
• Provided with a penicillium.
• Streaky; scratchy; penciled.
• In entomology, specifically, provided with penicils.
• In botany, pencil-shaped; consisting of a bundle of hairs resembling those of a hair pencil.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Biol.) Having the form of a 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective botany, zoology Having tufts of fine hairs, or in the form of a tuft of fine hairs.