GLOSSARY 



Acrogenous, borne at the tips of hyphae ; see spermatium, 312. 



Allelositismus, Norman's term to describe the thallus of Moriolaceae (mutualism), 313. 



Amorphous cortex, formed of indistinct hyphae with thickened walls ; cf. decomposed 



cortex. 



Amphithecium, thalline margin of the apothecium, 157. 



Antagonistic symbiosis, hurtful parasitism of one lichen on another, 261 et seq. 

 Apothecium, open or disc-shaped fructification, 11, 156 et passim. Veiled apothecium, 



169. Closed or open at first, 182. 

 Archilichens, lichens in which the gonidia are bright green (Chlorophyceae), 52, 55 



et passim. 



Ardella, the small spot-like apothecium of Arthoniaceae, 158. 

 Areola (areolate), small space marked out by lines or chinks on the surface of the thallus, 



73 et passim. 



Arthrosterigma, septate tissue-like sterigma (spermatiophore), 197. 

 Ascogonium, the cell or cells that produce ascogenous hyphae, 180 et seq. 

 Ascolichens, lichens in which the fungus is an Ascomycete, 159, 173 et passim. 

 Ascus, enlarged cell in which a definite number of spores (usually 8) are developed ; cf. 



theca, 157, 184. 

 Ascyphous, podetia without scyphi, \\^ et passim. 



Biatorine, apothecia that are soft or waxy, and often brightly coloured, as in Biatora, \ 58. 



Blasteniospore, see polarilocular spore. 



Byssoid, slender, thread-like, as in the old genus Byssus. 



Campylidium, supposed new type of fructification in lichens, 191. 



Capitulum, the globose apical apothecium of Coniocarpineae ; cf. mazaedium, 319. 



Carpogonium, primordial stage of fructification, 160, 164 et passim. 



Cephalodium, irregular outgrowth from the thallus enclosing mostly blue-green algae; or 



intruded packet of algae within the thallus, u, 133 et passim. 

 Chrondroid, hard and tough like cartilage, a term applied to strengthening strands of 



hyphae, 104, 114. 



Chroolepoid, like the genus Chroolepis (Trentepohlia). 

 Chrysogonidia, yellow algal cells ( Trentepohlia). 



Cilium, hair-like outgrowth from surface or margin of thallus, or margin of apothecium, 91. 

 Consortium (consortism), mutual association of fungus and alga (Reinke); also termed 



"mutualism," 31, 313. 



Corticolous, living on the bark of trees, 363. 

 Crustaceous, crust-like closely adhering thallus, 70-79. 

 Cyphella, minute cup-like depression on the under surface of the thallus (Sticta, etc.), 



11, 126. 



Decomposed, term applied to cortex formed of gelatinous indistinct hyphae (amorphous), 



73-81 et passim, 357. 



Determinate, thallus with a definite outline, 72. 

 Dimidiate, term applied to the perithecium, when the outer wall covers only the upper 



portion, 159. 



