366 AN EXPLANATION OF 



232 Puuctatum, punctate, with hollow scattered punctures. 



233 Papillosum, papillose, covered with fleshy punctures. 



234 Papulosum, papulose, covered with vascular punctures. 

 35 Viscidum, viscid, covered with a viscid humour. 



236 Villosum, villous, covered with soft hairs. 



237 Tomentosum, downy, covered with downy ha*rs. 



238 Sericeum, silky, covered with soft silky hairs. 



239 Lanatum, woolly, covered with woolly hairs. 



240 Barbatum, bearded, hairs growing in tufts. 



241, Pilosum, pilous, covered with long hairs that appear 

 distinctly. 



242 Scabrum, rough, covered with rigid punctures raised 



above the surface. 



243 Hispidum, hispid, covered with hard bristles. 



244 Aculeatum, prickly, covered with sharp prickles f37S) 



245 Strigosum, strigous, armed with lance-shaped prickles 



(167). 



EXPANSION. 



246 Planum, plane, with a flat and equal surface. 



247 Canaliculatum, channelled, a deep channel or furrow, 



running lengthways. 



248 Concavum, concave, when the disk is arched from the 



margin, and forms a hollow. 



249 Convexum, convex, opposite to concave: these two 



terms arise from the same cause, the margin being 

 too tight for the expansion of the disk ; therefore if 

 a leaf is concave on one side, it is convex on the 

 other, 



250 Cucullatum, hollowed, when the sides of a leaf press 



together at the base, and expand towards the apex. 



251 Plicatum, plaited, folded in sharp flexures from the 



disk to the margin. 



252 Undatum, waved, the flexures or folds being obtuse 



from the disk to the margin. 



253 Crispum, curled, where the margin is plaited, Jbut the 



folds do not reach to the middle rib of the disk. 



SUBSTANCE. 



254 Membranaceum, skinny, pellucid, without any fleshy 



substance. 



255 Scariosum, of a dry parched substance, that sounds 



when touched. 



256 Gibbum, gouty, when both sides of a leaf are bunched 



out by a copious quantity of pulp. 



257 Ter.es, cylindrical, or pillar-shaped. 



% 53 Depres- 



