greybeard lichen
(US graybeard lichen)
noun
Any of several foliose lichens of the genus Usnea.
Origin
Mid 19th century; earliest use found in American Gardener's Magazine.
| 单词 | greybeard lichen |
| 释义 | greybeard lichen(US graybeard lichen) noun Any of several foliose lichens of the genus Usnea. Origin |
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