326 BOTANICAL GAZETTE [APRIL 
PLATE XX 
FIG. 33 7 rigpetbadinal a section of stem of Potentilla monspeliensis in 
region of primary wood; X25 
FIG. 34. —Longitudinal radial section of stem of Cydonia vulgaris in region 
of primary wood; X25 
FIG. 35. Ox widteatinal radial section of leaf trace of Cydonia japonica; 
250. 
Fic. 36 Longitudinal radial section of stem of species of Leea in region 
of —— wood; X25 
37 ah cee radial section of stem of species of Vitis in region 
of sighs wood; X250. 
Fic. 38.—Same as fig. 37, farther out from primary wood; 
Fic. 39.—Longitudinal radial section of leaf trace of species ae Vitis: 250. 
Fic. 40.—Longitudinal radial section of spring and summer wood in species 
of Vitis; X250. 
