118 MAPLE: SYCAMORE 



(/8) Wings extended forwards, at an angle 



with the line of junction: all glabrous. 

 * Wings extended at an angle of 45, or 

 more, not constricted where they leave 

 the seed-chamber. 



A. platanoides, L. Norway Maple (Fig. 111). 



The chief difference from A. campestre lies in the 

 angle of divergence of the wings, their greater breadth 

 near their middle, and larger size, each being about 

 55 60 mm. long. 



** Wings extended forwards at an angle of 

 15 or so, strongly constricted below and 

 expanded above. 



A. Pseudo-Platanus, L. Sycamore (Fig. 112). The 

 distinctive points from the other two species are that 

 the wings are more constricted below and more expanded 

 above and directed forwards at a smaller angle. 



(2) Fruit fleshy, with watery or viscid juice, 

 indehiscent. 



[For (2**) (2*) Fruit simple, not aggregate nor multiple. 



seep. 151.] 



pp or /^ (a) Fruit drupaceous, a "stone fruit"; the seed pro- 

 seep. 137.] tected by a hard bony endocarp or shell. 



[For (ii) /j\ Drupe with one stone only. 



seep. 127.] J 



[For (|8) (a) Drupe superior ; with no trace of per ig one 



or stamens at the apex. 



[For (**) * Drupe 10 mm. or more in diameter, 



smooth, with no hairs nor other append- 

 ages on its surface. 



[For (Jf) t Ripe fruit blue-black or purple black. 



[For(o 0) Ripe fruit glaucous with waxy-bloom. 



see p. 121.] 



