Dwarf Maple 



643 



sepals, but they are longer than the stamens in the pistillate flowers, while the 

 stamens of the sterile flowers are much longer than the sepals. The samaras are 

 smooth, soon red, and diverge from each other as widely as is possible; they ard 

 about 3 cm. long, the wing 8 to 15 mm. wide. 



The wood is used in small quantities for the handles of tools; it is hard, light 

 brown, with a specific gravity of 0.67. The tree succeeds well in cultivation and 

 is of great beauty. Professor Greene has described Acer Macounii, from specimens 

 collected by Mr. J. M. Macoxm, in British Columbia, as distinct from the Vine 

 Maple. 



5. MODOC MAPLE— Acer modocense Greene 



This recently described tree is a native of northern California, related to the 

 Vine maple, but apparently distinct from 

 it, though known as yet only from a few 

 specimens. 



The bark of twigs is smooth, faintly 

 shining, light brown. The leaves are 

 thin, nearly orbicular in outline, 5 to 6 

 cm. broad when mature, with 5 radiat- 

 ing ovate lobes which are pointed and 

 sharply irregularly toothed; the leaf-sur- 

 faces are nearly equally light green on 

 both sides, the under surface somewhat 

 hairy on the veins and at the end of the 

 slender smooth stalk, which is from 2 to 

 3 cm. in length. The small flowers are 

 described as green or greenish white, the 

 sepals oval and but little longer than the 

 petals. The samaras diverge nearly at ig. 592.— oc ape. 



180°, the seed-bearing part plump, strongly nerved, 5 mm. long, and nearly as 

 thick as long, the oblong blunt wing nearly 2 cm. long and about 8 mm. wide. 



6. DWARF MAPLE— Acer glabrum Torrey 



This small tree or shrub occurs along streams and on hillsides from Montana 

 and Idaho to Wyoming, western Nebraska, throughout Colorado to New Mexico 

 and Arizona, and also in the Sierra Nevada Mountains of California. It attains 

 a maximum height of only about 8 meters, and its trunk is not known to exceed 

 2 dm. in thickness. It is also called Shrubby maple. 



Its bark is thin and red-brown. The twigs are smooth, slender, and early be- 

 come red-brown; the long-stalked thin leaves are smooth, or very minutely hairy 

 when very young, nearly orbicular in outhne, or broader than long, 2.5 to 8 cni. 



