usnea

/uhs-nee-uh/US // ˈʌs ni ə //

脐带血,脐带血症,脐带环,脐带绕颈

Definitions

n.名词 noun

1
- : any pale-green or gray, mosslike lichen of the genus Usnea, common on rocks and trees.

We camped in a boggy hollow on a bluff among scraggy, usnea-bearded spruces.
Usnea barbata is collected from trees in Pennsylvania, and used for an orange colour for yarn.
It resembles carbonized horse hair and was called "horse hair usnea" by old Dillenius.
The larger ones covered with lichens,—often hung with the long gray Usnea.
It was in a section of Mississippi where there was no Usnea growing within 60 miles.