HAWTHORN : VINE 227 



** Leaves devoid of latex, and glabrous or 

 nearly so. 



t Leaves small, about 3 6 cm. in diameter, 

 cuneate; lobes crenate, irregular. Shoots 

 thorny. 



Crataegus Oxycantha. In the case of deeply-lobed 

 leaves the venation is pseudo-palmate, and the leaf appears 

 palmate, owing to the divergence of the long basal 

 secondaries from the point of attachment of the petiole 

 into the larger lobes (see p. 210). 



tt Leaves large, up to 10 20 cm. in diameter, 

 broad pentagonal or rounded, 3 5-lobed ; 

 shoots not spiny or thorny. 



Many leaves with opposed tendrils; 'petiole 

 solid at the base and the buds exposed; not 

 bearing stellate hairs, but containing needle- 

 like raphides. Stipules scaly and caducous. 



Vitis vinifera, L. Vine (Figs. 79 and 80). Tendril 

 climber, the tendrils all leaf-opposed. Leaves rounded 

 heart-shaped, about 6 14 cm. in diameter, palmatifid into 

 5 or rarely 3 lobes, the incisions half-way in or more, and 

 narrow ; cordate at base, and of a pleasant green colour. 

 Lobes ovate, acute, sinuate and irregularly cut, and 

 coarsely serrate ; glabrous, or more or less pubescent or 

 velvety below. Petiole up to 8 cm., hardly as long as the 

 leaf, nearly cylindrical, striate, dilated below, thick and 

 herbaceous ; stipules scaly and caducous. Autumn leaves 

 brilliantly coloured, orange, red, &c. Young leaves covered 

 with deciduous tomentum and pearly drop-like glands. 



Venation palmate, with 3 5 basal ribs, usually of 

 5 primaries, the outer reflexed, all ending in the points of 

 the lobes, and giving off pinnate secondaries which run to 

 the larger teeth or lobules. Secondaries numerous, those 



152 



