1895.] MICROSCOPICAL JOURNAL. 79 



Glossary of Terms Used in the Key to Lichens. 



Acicular, needle-shaped. 



Alectoriaeform, having the form of the genus Aleetoria. 



Amphi, both, two. 



Apothecium, the ascigerous fructification of lichens, forming masses of various 

 shapes. 



Ascendant, rising towards the zenith. 



Aveniform, resembling a grain of oats. 



Biatorine, resembling the genus Biatora, having a proper exciple which is not 

 coal-black but colored or blackening. 



Cartilaginous, firm and tough like cartilage. 



Caulescent, having a leafy stem. 



Cephaloid, shaped like the head. 



Concatenate, linked together. 



Coriaceous, leathery, tough. 



Cortical, resembling bark. 



Crateriform, like a shallow bowl. 



Crustaceous, having a crustlike shell. 



Cylindraceous, approaching the form of a cylinder. 



Cyathiform, cup-shaped. 



Cymbiform, shaped like a boat. 



Cyphels, cup-like pits or depressions on the under surface of the thallus, usu- 

 ally white or yellow. 



Dactyloid, finger-like in form or arrangement. 



Decolorate, deprived of color. 



Diflbrm, irregular, not uniform. 



Dichotomous, regularly dividing by pairs. 



Ellipsoid, shaped like an ellipse. 



Emarginate, notched at the summit. 



Endocarpein, having the apothecia sunken in the substance of the thallns as 

 in the genus Endocarpon. * 



Epiphyllous, growing upon or inserted into a leaf. 



Everniaeform, shaped like the genus Evernia. 



Exciple, the outer part of the fructification of most lichens. 



Explanate, spreading or extending outwardly in a flat form. 



Explicate, unfolded. 



Foliaceous, having the texture or nature of a leaf. 



Filiform, having the shape of a thread. 



Frondose, resembling a frond. 



Fruticulose, full of fruit. 



Fusiform, tapering at each end. 



Globose, resembling a globe. 



Gonidium, a component cell of the yellowish green layer in certain lichens. 



Gonimia, bluish-green granules which occur in certain lichens. 



Granulous, full of grains. 



Gyrose, turned round like a crook or bent to and fro. 



