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GLOSSARY OF THE PR IN C IPA L TERMS
EMPLOYED.
Anap/ii/Si;«—Filaments springing- from the upper inuer surface of the
hypothecium.
Applicate—I'orming the tlialline border in many crustaceous lichens.
Arthrosterirpnata—.fointed sterigmata.
Compo.sed of the basal but enclosed filaments of the axis.
Basidia—The filaments bearing stylospores.
CfepArt/ofiiVi—Tubercles containing gonimia.
Cortex—'I'he limiting tissue of the tliallus.
Consisting chiefly of oxalate of lime. '
Ci-KstaeecMs—Forming a more or less tliickish crust, generally attached
by the wliole under surface.
Cyplielloe—Mim\te empty cavities on the underside of the thallus.
Deternnnate—W \t\i a distinct margin.
Discotd—More or less basin-shaped.
Effuse—Without a clearly defined outline.
Endosp .re—Inner layer of wall of spore,
Epispore—Outer layer of wall of spore.
Epithallus— îh e external layer of the cortex.
Epithccimn—The surface of the hymeniura.
Evanescent—ReAncpA to mere gouidia scattered over the .substratum.
Ex-ciple proper—Hie hypothecium of a discoid apotheciuni.
Gonidia—The green cells of the thallus.
Gonidimia—Green cells smaller than gonidia and with the cell-wall less
distinct.
Gonimia—Bluisli-green naked granules.
IIeteromerous— ^ i \ h the constituent elements stratified.
llomoeonviroiis-'iSiiÜi t i e constituent elements more or less mixed.
Ihjmenial gelatine—Hie colourless amyloid substance permeatino- the
hymeuium. ^ °
ilymenium— Hie layer of tbecæ and paraphyses.
Hypoplilceodal— GoiiAiitv ÿ of a very thin film often concealed beneath
the bark of trees and between the interstices of rocks.
Ilypophylline—Gonsiatiivy of the root-like filaments or rhizinæ.
E yp o th a llu s-Hie basal tissue, being hvpopbylline, ajiplicate, and axial.
Hypothecium—Hie fundamental structure bearing the fructification.