^^^ auUFACE OF LEAVES. 



Involutum, involute, the reverse of the preceding, as m 



Pinguicida, t. 70 and 145. 

 Conduplicatum, folded, when the margins are brought 



together in a parallel direction, as in Roscoea purpurea, 



Exot. Bot. t. 108. 



7. Terms expressive^of different kinds of surface, apply- 

 ing equally to the leaf and to the stem, have been al- 

 ready explained, //.111. To these may be added the 

 following, chiefly appropriated to leaves. 



Punctatum, dotted ; either superficially as in Rhododen- 

 drum punctatum, Andr. Repos. t. 36, and Melaleuca 

 linarifolia, Exot. Bot. t. 56 ; or through the sub- 

 stance, as in Hypericum perforatum^ (74) Engl. Bert. 

 t. 295, and the whole natural order to which the Or- 

 ange and Lemon belong, 



Rugosum, rugged, when the veins are tighter than the 

 surface between them, causing the latter to swell in- 

 to little inequalities, as in various species of Sage, 

 Salvia. See Flora Gr^ca ; also Teucrium Scorodo- 

 nia^ Engl. Bot. t. 1543. 



Bullatum, blistery, is only a greater degree of the last. 

 as in the Garden Cabbage, Brassica oleracea. 



Plicatum,/. ^5, plaited, when the disk of the leaf, es- 

 pecially towards the margin, is acutely folded up and 

 down, as in Mallows, and Alchemilla vulgaris, Engl. 

 Bot. t. 597, where, however, the character is but ob- 

 scurely expressed. 



Undulatum,/. 86, undulated, when the disk near the 

 margin is waved obtusely up and down, as Reseda 



(74) [Common St. John's wort.| 



