CUFULIFERJE 



533 



Cotyledons rotund-obovate, obtuse, shortly petiolate, auricled at 

 the base, concave on the upper face, rather fleshy, green and rising 

 above the soil, glabrous except the petiole, 

 which is short, slightly grooved on the 

 upper side and pubescent, T5 mm. long. 



Stem soon becoming woody, erect, 

 terete, zigzag from leaf to leaf, pubes- 

 cent ; 1st internode '75 mm. long ; 2nd 

 1-5 mm. ; 3rd 3'5 mm. ; 4th 2*25 mm. 



Leaves simple, cauline, alternate, 

 stipulate, petiolate, glabrous except on 

 the nerves beneath and the petioles, 

 penninerved with ascending parallel 

 nerves running into the serratures, 

 plicate, especially when young, doubly 

 and cuspidately acuminate, serrate ; 

 petioles slender, channelled above, short, 

 pubescent ; stipules free, subulate, acute, 

 hairy, brownish-green. 



No. 1. Triangularly ovate, lobulate 

 and doubly serrate, with acute serratures. 



No. 2. Ovate-subcordate, acute, doubly 

 serrate. 



No. 3. Ovate, acute, narrowed slightly 

 at the base, but rounded, doubly serrate. 



Ultimate leaves ovate, acuminate, . S 1 ?-, 667 - , T 



. , Carpinus Betulus. Nat. size, 



doubly serrate, slightly unequal at the 



base, plicate, with ascending parallel nerves, glabrous above, sparsely 

 hairy on the nerves beneath with a woolly tuft in the axils of the 

 lateral veins where they join with the midrib, petiolate; petioles 

 terete, hairy, tapering upwards from 



a stout base, 8-12 mm. long. r 



Corylus Avellana, DC./, (fig. G68). 



Ovary of two carpels, two-celled, 

 each cell two-ovuled ; ovules pendu- 

 lous, anatropous ; micropyle superior. 



Fruit a glans or nut surrounded 

 at the base by an involucre which is 

 double (the outer series or bracts being 

 short and little cut, the inner or brac- 

 teoles large, accrescent and deeply laciniated), oblong-ovoid, ovoid 

 or globose, glabrous except at the top which is densely and finely 



FIG. 668. Corylus Avellana. 



Vertical section of nut, nat. size, 



with seed pulled out : o, aborted 



ovule ; m, micropyle ; pi, placen- 

 r, raphe ; ch, chalnza. 



tal axis 



