Class XXI. Order VIII. 357 



than the nut, its border dilated, tooth-serrate ; leaves 

 roundish, heart-shaped, acuminate. Willd. 



The common hazel nut is a slender shrub, usually growing in 

 bunches about the borders of fields. The barren flowers grow 

 in long, pendulous aments ; the scales of the calyx ciliated with 

 the middle portion acuminated. Anthers about eight. The fer- 

 tile flowers grow in a sort of buds, on a different part of the 

 branch. The nuts, which are nearly equal in quality to the Eu- 

 ropean, grow in large bunches, each one invested with a large, 

 hairy calyx, extending considerably beyond the nut. April. 



CORYLUS ROSTRATA. Jilt. Beaked Hazel. 



Leaves oblong-ovate, acuminate ; stipules linear- 

 lanceolate ; calyx of the fruit campanulate-tubular, 

 longer than the nut, two parted, with toothed segments. 



A smaller shrub than the foregoing. Leaves ovate or obovaie, 

 somewhat hearted, unequally and sharply serrate, downy under- 

 neath. Calyx inclosing the nut, densely hispid, round at base, 

 contracted like a bottle into a long, narrow neck which is cut 

 and toothed at the extremity. Sudbury. May. 



415. CARPINUS. 



CARPI NUS AMERICANA. Willd. Hornbeam. 



Leaves oblong-ovate, acuminate, unequally serrate ; 

 calyx of the fruit three parted, the middle segment ob- 

 lique, toothed on one side. 



A small tree with sharply serrated leaves. Barren and fertile 

 aments small. The fruit is a leafy spike formed from the enlarged 

 ament, having alternate pairs of calyx leaves, which are large, 

 oblique, auriculate at base, toothed on the lower, and entire on 

 the upper side. Seed or nut naked, dark coloured, heart shaped, 

 acute, ribbed. Woods, Roxbury, rare. April, May. 



The name Hornbeam is often applied in this state to Nyssa 

 aquaiica. 



