FORMS OP LEAVES. 151 



tilso JVitsenia coryjnhosa, Exot. Hot. 

 t. 68, and Dilatris eovi/nibosa, t. 16. 



Deciirrentia, f. 36, decurrent, running- 

 down the stem or branch in a leafy bor- 

 der or wing, as Onopordum yicanthiinu, 

 EngL Bot. t. 977, Carduus iemtijlorus, 

 t. 412, and many other Thistles, also 

 tlie Great Mullein, J^erbascum Thapsiis, 

 t. 549, and Comfrey, Si/mphytimi offici' 

 7iale, f. 817- 



Floj-ifcra, /'. 37, flower-bearing, when 

 flowers grow out of the disk or margin of 

 any leaf, as in Riisciis aculeatus, I. o60, 

 Xijlophylla hit [folia ^ and X. falcafa, 

 Andr. Bepos. t. 331. This is equivalent 

 to a frond in the class Cri/ptogamia ; 

 see p. 133. 



3. With regard to form. Leaves are either 

 simpUeUiy simple, like those of Grasses, 

 Orchises, Lilies, and many other plants, 

 as Ballot a nigra, EngL Bot. t. 46, and 

 Berbcris vulgaris, t. 49 ; or compoaita, 

 compound, as in most Umbelliferous 

 plants, Parsley, Hemlock, Sec. ; also 

 Roses, EngL Bot. t. 990—992. 



