232 Bulletin 68. 



Am. ii. 243(1803). P. GrcEca pe7idula, P. nigra pendula and Parasol 

 de St. Jjilicn of nurserymen). Large-Toothed AspEN. Fig. 12; 

 a, b, c, d, fig. I. — This is a common native tree from Nova Scotia 

 to North Carolina. It is distinguished from the European aspen, 

 above, by much larger and thicker leaves which are bluish or 

 rusty-white beneath, more ovate in outline, with larger and more 

 spreading teeth, stouter leaf-stalks and larger leaf-buds. In its 



14. Populus trentuloides {% nat. size). 



normal or erect form, it is rarely cultivated, but the weeping va- 

 rieties, under a variety of names, are frequently seen. Most, and 

 perhaps all of these varieties originated in Europe, where the tree, 

 like the cottonwood and the common aspen, were earl}^ introduced. 

 The habit of the tree is too stiff and the foliage most too heavy 

 to make the best \^'eeping subjects, however. One of the best of 

 these weeping forms is that known as Parasol de St. Julien. The 

 characteristic weak or zigzag winter twigs of the weeping varie- 

 ties of this species are shown in Fig. i . A is the form sold as 

 P. grandidentata pendula ; b is Parasol de St. Julien, and this 

 twig shows a flower-bud midway. These two forms, it will be 

 seen, have a stiffer or straighter habit than the two following. C 

 is the form sold as P. Grceca pendula, and d the one called P. nigra 

 pendula. 



