Trees, Shrubs and Vines 



style 2-lobed at apex ; 1-3-clustered ; June ; fruit smooth ; 

 branches usually prickly. Western Massachusetts to Wisconsin, 

 and south in mountains to Virginia. 



163. Swamp Gooseberry. (Ribes lacustre.) 

 Leaf : as in 160, deeply lobed ; young shoots with abundant, 

 weak, reddish prickles ; old stems somewhat thorny. Flower : 

 as in 160, but style 2-lobed at apex ; 4-9-clustered, drooping ; 

 June ; fruit, small, bristly, purple. New England to Wisconsin, 

 and in Pennsylvania. 



164. Forestiera. (F. acuminata.) 

 Leaf : i'-3', simple, opposite, finely serrate or entire, long- 

 ovate, base and apex sharp. Flower : greenish, or whitish (no 

 corolla, calyx of 4 small, soon-falling sepals, 2-4 stamens) ; 1-3. 

 clustered ; April. West Illinois. 



165. Smooth Sumach. (Rhus glabra, with var. laciniata.) 



Leaf: pinnate, alternate; leaflets, 11-31, 2-4' long, lance- 

 shaped, serrate, whitish beneath, stfiooth, with some bloom. 

 Flower : p., whitish, greenish, or greenish-red, small (petals and 

 stamens 5), in erect, dense, pyramidal clusters, which in fruit are 

 crimson; June, July ; 3°-i5° high. (PI. VIII.) 



The ornamental cut-leaved sumach is a variety of this species. 

 (PI. VIII.) 



166. Dwarf Sumach. (Rhus copallina.) 



Leaf : pinnate, alternate ; leaflets, 9-21, 1-3' long, ovate to 

 lance-shaped, entire or slightly serrate, somewhat glossy above ; 

 the stem broadly margined between the pairs of leaflets. 

 Flower : as in 165 ; July, August ; i°-7° high ; rarely arboreal, 

 i5°-20°. (PI. IX.) 



167. Sweet Gale. (Myrica Gale.) 

 Leaf: i'-i)^', simple, alternate, serrate toward apex, long- 

 obovate, base tapering, fragrajit wheti bruised. Flower : the 

 staminate catkins i' or more in length, terminal ; the pistillate ^' 

 long, oval, lateral ; no corolla nor calyx ; April, before the leaves. 

 New England, south and west ; on edge of fresh water ; 2°-5'' 

 high. (PI. IX.) 



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