KKY TO THK DW.MJKS OF 'II 1 1. 1'I.XK KAMI I, 1 ! 



323 



fa as wide as long, midrib yellow. A willow witli 

 erect branches forming broad thickets on sand bars in the 

 streams. SAM> BAR Wn.i.ow Salix loiigifolia (S. tlnvi- 

 atilis). [Twig cuttings.] 



Riiscus aculeatus. The RI-TCHER'S 

 I'.I:OOM (583) is a peculiar evergreen 

 shrub, 1 to 4 feet, with alternate 

 se.-sile ovate lea\e< ', to 1 .! inches long ; 

 these are not true leaves but tlat leaf- 

 like branches ending in sharp points 

 and having on their lower sides the 

 small flowers in spring and the red 

 berries (\ inch thick) later in the sea- 

 son. It is hardy only in the extreme 

 South. [Suckers.] 



Coniferous Evergreens. The shrubby 

 plants with narrow-linear, needle- 

 sha] ed. and scale-shaped leaves are 

 still to be described. They include 

 PINF.S, SPRUCKS, AKI-.OKVIT.I:, JUNI- 

 PERS, etc. These ornamental shrubs 



are included in key 9, small-leaved plants, but for convenience the 

 following key is devoted to the Pine family alone. In this family there 

 are no compound leaves ; each green scale or needle-shaped part is u 

 whole leaf. 



FIG. 5815. Butcher's Broom. 



KEY TO GENERA WITH DWARF FOKMS BELONG- 

 ING TO THE PINK FAMILY 



* Leaves elongated four or more times as long as wide and spreading 



away from the twigs. (A.) 



A. Leaves not flattened but rather needle-like so that they can In- 

 rolled between thumb and linger. (B.) 



B. Leaves in clusters or bundles of 2-3-5 surrounded at base by a 

 sheath. Finns. 



B. Leaves separated from each other, spirally arranged and 

 attached to short brownish projections on grooved twLs. 

 Picea. 



A. Leaves decidedly flat and linear in shape. (C.) 



C. Leaves with distinct more or less greenish stems spirally fas- 



