Flora Medica

LICHENACE7E.Shields orbicular, peltate, beneath formed of the thallus ; thedisk coloured and surrounded by the elevated inflexed border,formed also of the thallus.1337. B. furfuracea Ach. syn. 222. Hooker B. F. ii. 223.Lichen furfuraceus E. B. t. 984?. Trunks and branches ofold trees, especially when decaying, and old pales.Thallus spreading, ascending, greyish -green, farinaceous, the segmentslinear, attenuated, much divided and forked, the margin recurved,deeply grooved, rugged and almost black beneath. Shields scattered,very concave, inflated, red-brown with a thin reflexed border. Reputedto be an astringent and febrifuge.EVERNIA.Thallus subcrustaceous, branched and laciniated, angled orcompressed, cottony within (" intus stuppeus Shields orbicular,scutelliform, sessile ; the disk concave, coloured, with an").inflexed border formed of the thallus.1338. E. Prunastri Ach. syn. 245. Hooker B. F. ii. 224.Lichen Prunastri E. Bot. t. 859. Trunks and branches ofirees, common.Thallus erect, greenish-white, much branched, pitted and rugged,flat; the segments linear, attenuate, somewhat grooved and palerbeneath. Shields bright-brown, concave, elevated, with an inflexedborder. Recommended in pulmonary affections ; also, as an astringentand febrifuge.It has a peculiar power of imbibing and retainingodours, and is in some request as an ingredient in sweet pots and ladies'sachets.USNEA.Thallus subcrustaceous, rounded, branched, generally pendulous,with a central thread. Shields (orbillae), orbicular, terminal,peltate, entirely formed of the substance of the thallus and nearlyof the same colour, the circumference mostly without a borderand (generally) ciliated.1339. U. plicata Ach. synops. 305. Hooker B. F. ii. 226.Lichen plicatus E. B. t. 237. Common on old trees and parkpales.Thallus pendulous, smooth, pale, branches lax, much divided, subfibrillose,the ultimate ones capillaceous. Shields plane, broad, ciliated,the ciliae slender and very long. Mentioned as a remedy for hoopingcough.CLADONIA.Thallus somewhat shrubby, branched, rarely simple, leafywith scales, which are often evanescent, branches cartilaginous,rigid, fistulose, all attenuated and subulate, divided, fertile, generallyperforated in the axils. Shields (cephalodia) sessile,orbicular, convex, capituliform, not bordered, fixed by the cir-.628