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GLOSSARY. 



Capitate : terminating in a knob, or 

 head. 



Capitulum : a terminal knob, or 

 head. 



Capillary : as slender as human 

 hair. 



Capsule : a spore-case, or concep- 

 tacle. 



Carnose : fleshy ; having the sub- 

 stance of flesh. 



Cartilaginous : resembling gristle. 



Cell : cellular tissue : when a small 

 portion of a plant is examined 

 under the microscope, its sub- 

 stance is found to consist of mi- 

 nute, membranous sacs, either 

 empty or filled with coloured mat- 

 ter. These sacs are called cells, 

 and, in the aggregate, cellular 

 tissue. 



Cellular (structure) : when the cells 

 are packed together like those of 

 a honeycomb ; or without obvious 

 arrangement. 



Cellulose : the chemical substance, 

 of which the walls of the cells are 

 composed. 



Ceramidium : a conceptacle of an 

 ovate form, pierced by a terminal 

 pore, and containing a tuft of 

 spores rising from the base of the 

 cavity. (See page 69). 



Chlorophyll : the green matter con- 

 tained in the cells of a plant. 



Cilia : properly applied to exceed- 

 ingly minute, vibratory hairs 

 found on the spores of certain 

 Algae. The term cilia (literally 

 an eye-lash) is also used for slen- 

 der ramuli or processes fringing 

 the margin of larger branches or 

 lobes. 



Cirrhous : resembling tendrils of a 

 vine. 



Class : a primary division of the 

 vegetable kingdom, consisting of 

 Orders ; as an order consists of 

 Genera ; and a genus of Species, 



Clavate : shaped like a club, slender 

 at the lower end and gradually 

 thickening upwards, to a blunt 

 point. 



Coccidium : a hemispherical or 

 spherical conceptacle, without 



pore, containing a tuft of spores 

 on a central placenta. (See page 



Compressed : between cylindrical 

 and flat, as if a cylinder were 

 partially flattened. 



Concentric : having a common cen- 

 tre ; as when several circles are 

 drawn one within the other. 



Conceptacle : a hollow case con- 

 taining a tuft or cluster of spores. 



Confervoid : resembling a Conferva, 

 that is, a thread formed of a sin- 

 gle row of cells or articulations. 



Coniocystce : the name given to the 

 fruit or sporangium of Vaucheria, 

 Codium, &c. 



Constricted : partly or wholly closed 

 by a circular fold, as if tied in by 

 a string passed round. 



Continuous : without any appear- 

 ance of joint, or other interrup- 

 tion, internal or external. 



Cordate : heart-shaped. 



Coriaceous : having the substance 

 of leather. 



Corneous : having the substance of 

 horn. 



Corymbose : an arrangement of 

 branches, where they pass off at 

 different heights from a main 

 stalk, and their tops are on a level 

 or form a convex surface. 



Cosmopolitan : found in all parts of 

 the world (or in most parts). 



Cruciate : shaped like a cross. 



Crustaceous : hard and expanded 

 like a crust. 



Cuticle : the skin or external layer. 



Decumbent : lying flat, along the 



ground. 



Deflexed : bent downwards. 

 Denticulate : having small, tooth- 



like projections along the margin. 

 Dichotomous : branched by repeated 



forkings, each division dividing 



at its apex continually into two 



subdivisions. 

 Dioecious : having stamens and pis- 



tils (or antheridia and spores) on 



distinct roots. 



