152 



TII& P6PULAR EDTJCATOB. 



19. IRIS LEAVES. 20. MELON LEAF. 21. PEDATE OR PEDALATE LEAF. 22. PELTATE LEAVES. 23. PINNATE LEAF. 24. ALTERNATE LEAVES. 

 25. PALMIFH) LEAF. 26. FASCICULATE LEAVES. 27. SAGITTATE LEAF. 28. SPATULATE LEAF. 29. VERTICILLATE OR WHORLED LEAVES. 

 30. PINNATE LEAF, WITH TENDRILS. 31. CORDATE LEAF. 32. CONFLUENT OB PERFOLIATE LEAVES. S3. LANCEOLATE LEAF. 34. ORBICULAR LEAF. 



Pinnate Leaf (Fig. 23). A leaf cut like a feather, from the 

 Latin penna, a wing or feather. The leaf figured consists of 

 pairs of leaflets, without foot-stalks, ranged along a common 

 petiole with a single leaflet at its extremity. The points at 

 which the paira of leaflets join the petiole are not exactly 

 opposite each other. 



Alternate Leaves (Fig. 24). Leaves are said to be alternate 

 when they grow from different points of the stem one above 

 another first on one side and then on the other. 



Palmifid L.eaf (Fig. 25). :Le.ayes, divided about half wfty 



I down into several lobes, like the leaves of the sycamore, are 

 j called palmate or palmifid, from their resemblance to the palm 

 j and fingers of the hand when extended- The word is de- 

 j rived from the Latin palma, the hand, and findo, to cleave 

 or split. 



Fasciculate Leaves (Fig. 26). Leaves issuing from a com- 

 mon point, aad arranged in the form of bundles, from the Latin 

 fasciculus, a little bundle. This peculiar arrangement of the 

 foliage is found in some of the coniferce, or trees of the pine 

 tribe, 



