i 16 FORMS OF LEAVES. 



pressed base, as in Nartheciumossifraguni^ t. 535 y 

 and the genus Iris ; also fVitseiiia corymbosay 

 E.vot, Bot. t. 68, and Dilatris corymbosay t, 16, 



DecujTentia, f. 36, decurrent, running down the 

 stem or branch in a leafy border or wing, as 

 Onopordiim AcaiiihiurHy Engl. Bot. t. 977 y Car- 

 dims tenuijioruSy i^. 4 1 2, and many other Thistles^ 

 also the Great Mullein, Verbascum Thapsiis, 

 t. 549, and Comfrey, Symphytum officinale^ 

 t. 817. 



Floj^ifhra, f. 37, flower-bearing, when flowers grow 

 out of the disk or margin of any leaf, as in 

 Riiscus aculeatus, t. 560, Xylophylla latifoUa, 

 and X. falcata^ Andr. Repos. t. 331. This is 

 equivalent to a frond in the class Cryptogamia ; 

 see/?. 103. 



3. With regard to Form, Leaves are either simplicia, 

 simple, like those of Grasses, Orchises, Lilies, and 

 many other plants, Ballota ^ligra^ Engl. Bot. t. 46, 

 and Berberis vulgaris, t. 49 ; or composita, com- 

 pound, as in most Umbelliferous plants, Parsley,. 

 Hemlock, &c. ; also Roses, Engl Bot. t. 990 — 

 99'2.. 



In compound leaves the footstalk is either simple, 

 as in the instances last quoted, and Sium angus- 

 tifoUum, t. 139; or compound, like those of 

 Sdinum palustre, t. 229, and Thallctrum majus, 

 t. 6l\, — In simple leaves the footstalk, if present, 



