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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.

especially in the Southern States, to the seed of several leguminous plants (species of Dolichos, Cicer, Abrus, etc.) esp. those having a scar (hilum) of a different color from the rest of the seed.

Parietaria, low, harmless weeds of the Nettle family; -- also called wall pellitory, and lichwort.

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

A kind of coloring matter obtained from lichens.

A large American flounder (Paralichthys dentatus; called also brail, puckermouth, and summer flounder. The name is sometimes applied to other allied species. [Written also plaise.] Plaice mouth, a mouth like that of a plaice; a small or wry mouth. [R.] B. Jonson.

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.

a dibasic acid of the oxalic series found in archil (Roccella tinctoria, etc.), and other lichens, and extracted as a white crystalline substance C17H32O4.

escence. -- Rock milk. (Min.) See Agaric mineral, under Agaric. -- Rock moss, a kind of lichen; the cudbear. See Cudbear. -- Rock oil. See Petroleum. -- Rock parrakeet (Zoöl.), a small Australian parrakeet (Euphema petrophila), which nests in holes among the rocks of high cliffs. Its general color is yellowish oliv…

A rotating cask or box in which small articles are smoothed or poliched by friction against each other. rumble seat, a seat in the rear of an automobile, outside the passenger cabin, which folds out from the body

hecium having an elevated rim formed of the proper thallus, the fructification of certain lichens.

A cup-shaped stem or podetium in lichens. Also called scypha. See Illust. of Cladonia pyxidata, under Lichen.

In lichens, a Hardened cup or disk surrounded by a rim and containing the fructification, or asci.

A theory proposed by Ehrlich as a chemical explanation of immunity phenomena. In brief outline it is as follows: Animal cells and bacteria are complex aggregations of molecules, which are themselves complex. Complex molecules react with one another through certain of their side chains, but only when these side chains h…

A patch of granular bodies on the surface of the thallus of lichens.

A conceptacle of certain lichens, which contains spermatia.

se that the two form practically a single body, as in the union of algæ and fungi to form lichens, and in the inclusion of algæ in radiolarians) it is called conjunctive symbiosis; if there is no actual union of the organisms (as in the association of ants with myrmecophytes), disjunctive symbiosis.…