6 Branches unarmed, or if armed, the. spines nostly 
a quarter inch long or less and occurring 
& Jo( on the stem as well as at the foot of the 
ot leaf stal:@ 
g@ Leaves roundish in outline, all lobed like 
/Z sees? a maple leaf 
/O Leaves besring .spines es, 
/4 4-10 mm, long on tne veins beneath Oplopanax ( —' 
{0 Leaves not spiny beneath 
Leaves commonly 15-20 cm. 
across; stems canelike, second tae 
Ib (year growth brown with a pro- ( Oy 
nounced pith Rubus b.—) 
Leaves commonly smaller; | *: seas 
/( stems branching and woody Ribes (p.—) 3 
8 Leaves oval, oblong or elliptical in 
outline, rarely roundish (see Populus), 
/2 the margins toothedor perfectly smooths 
. pinnately lobed in Dasinhora 
. /O SFa.Leaf margins entireiy smootn, not 
qi /4 at all toothed or scallopedo 
12 Leaves with a pair of flap-like 
appendazes Bel2 mn. hone or 
more (stipules) at the base of 
the le eaf-stalx, at least on 
Ae suckers or vigorous branches; 
treee-like shrubs or small trees 
commonly Tougd in stream : 
bottoms Salix \b—) 
/2 Leaves without such appendages 
/4 Leaves wider above the middle 
/@ Low bush intriaately twiggy; leaves 
distinctly petiolate, petioles 
204 thinly hai , 
y hairy Menziesia (b. - 
/(, Taller bush with conspicuously naked ; 
2 mY ders stems, leaves scarcely petiolate, the short { 
\*\ petioles rusty=pubescent Rhododendron 
/4 Leaves wider near or below the 6 7 
a leathery, lower sur- ' 
$4 face whitish or silvery : 
iy /¢ Lower surface of leaves 
sprinxled with resin dots; 
AOC Odor OF turventins when 
= a) j ° 
crushed Le dun iP. = 
