us·nea /ˈʌsniə, ˈʌz-/
松蘿屬
Us·nea /ˈəsnɪə/ 名詞
Us·ne·a n. Bot. 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.
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Usnea
n : widely distributed lichens usually having a grayish or
yellow pendulous freely branched thallus [syn: genus
Usnea]