F. LICHENS IN PERFUMERY 418 _a._ Lichens as perfumes _b._ Lichens as hair-powder
=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, 119 _et passim_.
=Biatorine=, apothecia that are soft or waxy, and often brightly coloured, as in _Biatora_, 158.
=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, 11, 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.