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ertaining to, or designating, an organic acid which is obtained from several varieties of lichen (Lecanora, Roccella, etc.), as a white, crystalline substance, and is called also orsellic, or diorsellinic acid, lecanorin, etc.

- - used of writing or printing; as, a fair, legible manuscript. The stone with moss and lichens so overspread, Nothing is legible but the name alone. Longfellow.

A linear apothecium furrowed along the middle; the fruit of certain lichens.

A dyestuff extracted from certain lichens (Roccella tinctoria, Lecanora tartarea, etc.), as a blue amorphous mass which consists of a compound of the alkaline carbonates with certain coloring matters related to orcin and orcein.

nsia maritima, found on the seacoast of Northern Europe and America. -- Tree lungwort, a lichen (Sticta pulmonacea) growing on trees and rocks. The thallus is lacunose, and in appearance somewhat resembles the lungs, for diseases of which it was once thought a remedy.

A name given to lichens of the genus Lecanora, sometimes blown into heaps in the deserts of Arabia and Africa, and gathered and used as food.

tes, or acts; as, an historical map. Thus is his cheek the map of days outworn. Shak. Map lichen (Bot.), a lichen (Lecidea geographica.) growing on stones in curious maplike figures. Dr. Prior.

Having or consisting of lines resembling a map; as, the maplike figures in which certain lichens grow.

es, intermediate between palmitic and stearic acids, and obtained from the wax of certain lichens, from cetyl cyanide, and other sources.

A variety of sugar, isomeric with sucrose and obtained from certain lichens and fungi. Called also trehalose. [Written also mykose.]

The lichen from which archil is obtained. See Archil.

A colorless crystalline substance, C6H3.CH3.(OH)2, which is obtained from certain lichens (Roccella, Lecanora, etc.), also from extract of aloes, and artificially from certain derivatives of toluene. It changes readily into orcein.

Pertaining to, or designating, an acid found in certain lichens, and called also lecanoric acid. [Formerly written also orseillic.]

A kind of lichen (Lecanora parella) once used in dyeing and in the preparation of litmus.

Pertaining to, or designating, an acid found in the lichen Parmelia parietina, and called also chrysophanic acid.

A kind of apothecium in lichens, which is orbicular, flat, and sessile, and has a special rim not a part of the thallus.

An organ in certain fungi and lichens, surrounding and enveloping the masses of fructification. Henslow.

A kind of coloring matter obtained from lichens.

A stalk which bears the fructification in some lichens, as in the so-called reindeer moss.

A rootlike filament or hair growing from the stems of mosses or on lichens; a rhizoid.