Usnea, Cladonia, Physcia, Parmelia, Calicium, many species of Lecidea, &c., Trentepohlia (Chroolepus) umbrina in many species of Verrucaria, Graphidieae and Lecidea; Palmella botryoides in Epigloea; Pleurococcus vulgaris in Acarospora, Dermatocarpon, Catillaria; Dactylococcus infusionum in Solorina, Nephromia; After Sachs, from De Bary's Vergleichende Morphologie and Biologie der Pilze, Mycetozoen and Bacterien, by permission of Wilhelm Engelmann.
- Usnea barbata.
species of Usnea and Ramalina, also Evernia furfuracea and Cladonia rangiferina, were used in the art of perfumery.
The chief of those employed for one or other, and in some cases for several, of these purposes were Cladonia pyxidata, Usnea barbata, Ramalina farinacea, Evernia prunastri, Cetraria islandica, Sticta pulmonaria, Parmelia saxatilis, Xanthoria parietina and Pertusaria amara.
Usnea also contains mucilage, which may be helpful in easing irritating coughs.
(b) The fruticose thallus may be either erect, becoming pendulous, as in Usnea (fig.
Usnea, Peltigera); (b) lecanorine, or scutelliform, which are orbicular and surrounded by a distinct, more or less prominent thalline margin (e.g.
Usnea, Alectoria jubata); while a few occur more especially on trees by roadsides (e.g.
Here again forests of Coniferae predominate, especially on the northern and eastern slopes; and the other distinguishing features of the flora are gigantic male ferns (Aspidium filix-mas), Paris incompleta (a member of the Trilliaceae), Usnea or tree-moss, box, holly (Ilex aquifolium), Lilium monadelphum and many of the familiar herbaceous plants which flower in English gardens, though here they grow to an altogether extraordinary size - " monkshoods, Cephalaria, Mulgedia and groundsels, among which men on horseback might play at hide and seek without stooping " (E.
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