LEAVES. S5 



different from them and from the natural habit of the 

 genus* Ex. Many of the Mimosce of New-Holland. 



24. HOODED (cucullatum.) PL 8, fig. 1. When 

 the edges meet in the lower part and expand in the up- 

 per. Ex. Hooded Violet, Viola cucullata, and Side- 

 saddle Flower, Sarracenia. 



Observation. A leaf is said t6 be hooded, whether the edges 

 unite so as to form a perfect cavity as in Saracenia ; or whether 

 they simply meet without cohering 1 , as in Viola cucullata. Prof. 



25. APPENDAGED, (appendiculatum.) PL 8, fig. 2. 

 Furnished with an additional organ for some particular 

 purpose not essential to the leaf. Ex. Venus's Fly- 

 trap, Dioncea mustipula. 



Observation, Each of the leaves of this plant is furnished with 

 a pair of armed irritable lobes, which close upon and pierce or 

 imprison insects whenever they crawl upon it ; hence the name of 

 Venus's Fly-trap. 



VIII. Compound Leaves. 



COMPOUND :LE\VES, (folia composita) consist of 

 two, or any greater number of leaflets ; ( foliola) con- 

 nected by a common footstalk. 



Observation 1. Any part is denominated common, which includes 

 or sustains several parts similar among themselves. 



2. These leaflets or lobes are, themselves, small, simple leaves, 

 and like them vary in form according to distinctions already es- 

 tablished . Milne. 



3. A compound leaf is distinguished from a branch by this cir- 

 cumstance, that the leaflets do not fall off alone, but are accom- 

 panied by the common footstalk. 



1. JOINTED ;LEAF, (folium articulatum.) PL 8, fig. 

 3. Is when one leaf grows out of the summit of anoth- 

 er with a sort of joint. 



2. DIGITATE, (digitotum.] PL 8, fig. 4. Finger- 

 ed ; when several leaflets proceed from the summit of a 

 common footstalk. Ex. Common Cinquefoil, Potentilla 

 simplex. 



3. BIXATE, (binatum.} PI 8, fig. 5. Is a fingered 

 leaf, consisting of only two leaflets. Ex. Zigophylium. 



