roccella

[n] - a source of the dye archil and of litmus
Found on http://www.webdictionary.co.uk/definition.php?query=roccella

roccella

Roccella tinctoria noun a source of the dye archil and of litmus
Found on https://www.encyclo.co.uk/local/20974

Roccella

[lichen] Roccella is a lichenized genus of fungi in the family Roccellaceae. == See also == ...
Found on http://en.wikipedia.org/wiki/Roccella_(lichen)

Roccella

genus of tropical fruticose lichen, an important source of the dye orchil and litmus (qq.v.).
Found on http://www.britannica.com/eb/a-z/r/58
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