GUELDER ROSE 177 



II. LEAVES SIMPLE : ENTIRE, TOOTHED OR LOBED, 

 BUT IN THE LATTER CASE THE DIVISIONS 

 NEVER EXTEND QUITE TO THE MIDRIB. 



A. LEAVES OPPOSITE, OR RARELY IN WHORLS OF [For B see 

 THREE OR FOUR. P * 203- ^ 



(1) Leaves stipulate. [For (2) 



seep. 180.] 



[See note, p. 161.] 



(a) Leaves broad ovate -rhomboid, 35 palmately 

 lobed; with sessile glands on the top of the 

 petiole, and linear fringe-like stipules below. 



Viburnum Opulus, L. Guelder Rose (Fig. 43). 

 Glabrous shrub. Leaves about 6 9 x 5 8 cm. or some- 

 times larger, rounded ovate and tri-lobed, palmatifid ; the 

 lobes large, triangular or triangular-ovate, and curved 

 outwards, acute or acuminate, and coarsely and unequally 

 sharply toothed, or again slightly lobed ; base of lamina 

 rounded and entire, or slightly cordate, or sinuous. Thin, 

 green and quite glabrous above, paler and sparsely pubes- 

 cent below ; downy when young. Petioles about 2 cm. 

 long and slender, their glands reniform or cupular and 

 often reddish ; stipules herbaceous, narrow and accom- 

 panied by two stalked glands. Autumn leaves with pink 

 and crimson coloration. 



Venation palmate or pseudo-palmate, the three or 

 more primaries often starting at different levels, all ending 

 in the points of the lobes, and giving off numerous 

 secondaries in pinnate order, each of which runs nearly to 

 the margin and then breaks up, often forking, just beneath. 

 Tertiaries forming more or less complete cross-ties. Outer 

 branches of laterals conspicuous and regular. 



w. ii. 12 



