| usnea | <botany> A genus of lichens, most of the species of which have long, gray, pendulous, and finely branched fronds. Usnea barbata is the common bearded lichen which grows on branches of trees in northern forests. Origin: NL, from Ar. Usnah moss. Source: Websters Dictionary (01 Mar 1998) |
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Synonyms : Usnea barbatas, Usneas, barbata, Usnea, barbatas, Usnea
| Usnea |
a genus of lichens of the family Usneaceae. U. barba´ta (L.) Wigg. is a species that grows on forest trees and contains usnic acid; it is used as a homeopathic preparation and as a dressing for wounds.
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| usnea | widely distributed lichens usually having a grayish or yellow pendulous freely branched thallus |
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| usnea | greenish gray pendulous lichen growing on trees |
| usnea | fruticose lichens having prostrate or erect or pendulous thalli: genera Usnea |
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