EXPLANATION OF THE PLATES. 



13 



PLATE III. 



COMPOUND LEAVES continued. 



16. Folium biternatum, a re-compounded leaf that is doubly- 

 ternate, that is, has the common footstalk 

 divided into three parts, each of which has 

 three leaflets. 



17. triternattim, a leaf that is triply- ternate, that is, 



has the common footstalk divided into three 

 parts, each of which is doubly-ternate. 



18. bipinnatum, a doubly-pinnate leaf. 



19. tripinnatum sine impari a triply-pinnate leaf, 



each pinna of which terminates abruptly. 



20. tripinnatum cum impari, a triply-pinnate leaf, 



with an odd leaflet at the apex of each pinna 

 or wing. 



DETERMINATION OR DISPOSITION OF LEAVES. 



1. inflexum, a leaf bent inwards, or towards the 



stalk. 



2. erectum, an erect leaf, or that is nearly perpen- 

 dicular. 



3. patens, a leaf bent outwards, or declining from 



the stalk at an acute angle ; a spreading 

 leaf. 



4. ' horizontale, an horizontal leaf, which is placed at 



right angles with the stalk. 



5. reclinatum, a leaf that is bent downwards. 



Fig. 



6. Folium revolutum, a leaf whose summits are rolled 

 inwards. 



7. seminale, a seed-leaf. 



8. caulinum, a stem-leaf. 



9. rameum, a branch-leaf. 



10. florule, a leaf that is stationed near the flower. 



11. decurrens, a decurrent or running leaf; a leaf 



which extends itself downwards along the 

 stalk beyond its proper basis. 



12. petiolatum, a leaf supported on a petiolus o: 



footstalk. 

 13. peltatum, a target-shaped leaf. 



14. sessile, a leaf that is seated immediately on the 



stem or branch, without any manifest foot- 

 stalk ; opposed to petiolatum. 



15. amplexicaule, a leaf which transversely embraces 



the stem by its base. 



16. perfoliatum, a perforated leaf. This leaf differs 



from the preceding chiefly in the perforation, 

 which is likewise transverse, taking place at 

 a greater distance from the margin. 



17. connatum, a leaf formed by the union of two 



leaves at the base. 



18. vaginans, a leaf, the base of which longitudinally 



surrounds the stem like a sheath. By the 

 circumstance of its longitudinal perforation, 

 this species of leaf may be easily distinguished 

 from those described at No. 15. and 16. 



VOL. I. 2. 



