FOR FORMS AND QUALITIES. 21 



guishably small, so that they approach to the dotted surface» 

 When they are larger, the surface is called scrohiculate {sci'o- 

 biculatus). When, in the last place, the hollows are conti- 

 guous, and have a regular structure, the surface is said to be 

 honeycombed (Jhvosus, alveolatus ). 



When the depressions are linear, they are called J^uit cw 

 (sulci), and the surface is said to be furrowed {sulcatus). 



When the depressions are intersected by raised lines of a 

 net form, the surface is said to be reticulated (reticulatus)^ 

 (Tab. VIII. Fig. 6, 7.) ; and when these lines run together 

 into distinct regular squares, the surface is called tessellated 

 (tessellatus). The surface is streaked (lineatus), when paral- 

 lel straight lines run through it, and are frequently elevated, 

 and frequently also of various colours. 



A part is said to be striated, when fine straight lines, which 

 project but a little, are seen running longitudinally on it. 



Ringed (annulatus) is commonly applied to a roundish or 

 tubular body, when it shews small circular prominences and 

 depressions ; Coriferva muralis. If these rings go quite 

 through the body, like true partitions, the tube is called sep- 

 fata ; Puccima, Didymosporium Nees, 



Rifted (rimosus), is applied to a surface, when it has small 

 deep and regular clefts. When these form small fields, these 

 latter spaces are called arcolce, and the surface is said to be 

 areolata {Lecidea Jumosa, atro-albd). 



A furrowed surface, where the spaces between the furrows 

 are raised in folds, is said to be folded (plicatus). 



Undulated (undulatus) is a surface which rises and sinks 

 successively in gentle lines. When this bending and sinking 

 are very irregular, the surface assumes a crispid appearance, 

 (crispus). 



There are still some other apparently foreign substancesj 

 which form a covering on plants. To these belong 



Hoariness (pruina), which makes the surface hoary (prui~ 

 nosus). It is a fine, commonly a bluish substance, which is 



1 



