NOA1ENCLATUKE OF THE Al'l'EN DAGES. 103 



12. Number: In number, the peduncle may be soli- 

 tary or aggregate. 



a. Simple or solitary either single on a plant, as in the cloud- 

 berry; or only one in the sime place, as in the antirrhinum spurium. 



b. Double or aggregate when several grow together, as in the 

 black mullein. 



STIPULE OR STIPl'LA. 



13. The principal sources of botanical description, 

 as regards the stipule, are derived from its situation, 

 duration, structure, &c. 



Stipules are very conspicuous in the tamarind, the rose, the cassia, 

 the honey-flower, the apricot, the peach, the bird-cherry, and in 

 many species of pea-bloom flower. In the tulip-tree, they are par- 

 ticularly conspicuous. 



14. Situation: In respect to situation, the stipule 

 may be solitary, paired, lateral, extrafoliaceous, intra- 

 foliaceous, and oppositifolious. 



a. Solitary when there is only one stipule, as in the butcher's- 

 broom. 



b. Paired when there are two stipules attached to the stem, one 

 an each side of the leaf-stalk, as in the yellow annual lathyrus, and 

 most of the plants furnished with stipules. 



c. Lateral when they grow upon, or are inserted into the sides 

 of the foot-stalk, as in the lotus tetraphyllus. 



d. Extrafoliaceous when they grow on the outside of the leaves 

 or below them, as in the beach, lime, &c. 



e. Intrafoliaceous when they grow above or within the leaves, 

 as in the bird-cherry, in the white mulberry and common mulberry. 



f. Oppositifoliousr-when they grow opposite to a leaf, as in 

 the clover. 



15. Duration: In respect to duration, the stipule 

 may be caducous, deciduous or persistent. 



