Trees, Shrubs and Vines 



shaped base, thickish when old, fragrant when bruised. Flower ; 

 p., light yellow, small (petals and stamens 5), crowded in clusters 

 before the leaves ; April, May ; 2°-6° high. (PI. VII.) 



141. Shrubby Cinque-foil. (Potentilla fruticosa.) 



Leaf : pinnate, alternate ; leaflets, 5-7, entire, about i' long, 

 lance-oblong, silky (especially beneath), crowded. Flower : p., 

 yellow (petals 5, stamens many), abundant, at ends of branchlets ; 

 June-September ; damp places ; 2°-^" high. (PL VIII.) 



142. Lapland Rose-bay. (Rhododendron lapponicum.) 



Leaf : ^', simple, alternate, entire, elliptical, apex blunt, ever- 

 green, dotted 7vith rusty scales. Flower: m., purplish (corolla 

 broad bell-shaped, 5-lobed, 5-10 stamens), about 2^' across, few- 

 clustered, terminal ; July. Alpine tops of mountains in Maine, 

 New Hampshire, and New York ; very low shrub. 



143. Rhododendron. (R. catawbiense.) 



Leaf : 3-5', simple, alternate, entire, oval to oblong, base and 

 apex rotmded, lighter beneath, evergreen. Flower : m., lilac- 

 purple (corolla broad bell-shaped, 5-lobed, 10 stamens), in ter- 

 minal clusters ; June. High mountains of Virginia ; 3°-6° high. 



144. Broom-crowberry. (Corema conradii.) 



Leaf : 34", simple, alternate, entire, narrow, scattered or 

 crowded ; evergreen. Flower : with no corolla nor calyx : 3-4 

 long purple stamens; in terminal "heads," each io-15-blos- 

 somed ; March, April. Maine to New Jersey, along coast ; low 

 shrub. 



145. Phyllodoce. (P. taxifolia.) 



Leaf : 3^', simple, alternate, entire, Hnear, apex blunt, rough- 

 edged. Flower: m., purplish (corolla long-urn-shaped, 5- 

 toothed, 10 stamens), single or few-clustered at top of branch ; 

 July. Alpine tops of mountains in Maine and New Hampshire ; 

 lOTV evergreen shrub. 



288 



