PORfaS OF LEAVES. 151 



also Witsenia corymbosa, Exot. Bot. 

 t. 68, and Dilatris corymbosa, t. 16. 

 Decurrentia, decurrent, running down the 

 stem or branch in a leafy border or 

 wing, as Onopordum Acanthium, Engl 

 Bot. t. 977, Carduus tenuiflorus, t. 412, 

 and many other Thistles, also the Great 

 Mullein, Verbascum Thapsus, t. 549, 

 and Comfrey, Symphytum officinale, 



f. 817. 

 Florifera, flower-bearing, when flowers 

 grow out of the disk or margin of any 

 leaf, as in Ruscus aculeatus, t. 560, 

 Xylophylla latifolia, and JC. falcata, 

 Andr. Repos. t. 331. This is equivalent 

 to a frond in the class Cryptogamia ; 

 see p. 133. 



With regard to form, Leaves are either 

 simplicia, simple, like those of Grasses, 

 Orchises, Lilies, and many other plants, 

 as Ballota nigra, Engl. Bot. t. 46, and 

 Berberis vulgaris, t. 49; or composite 

 compound, as in most Umbelliferous 

 plants, Parsley, Hemlock, &c. ; also 

 Roses, Engl Bot. t. 990—992. 



