266 



COKNACEAE. 



DAVIDIA. 

 (Family Cornaceae). 



Tree: deciduous. Twigs mod- 

 erately stout, terete, somewhat 

 zig-zag: pith moderate, rounded, 

 pale, continuous with firmer 

 plates at short intervals. Buds 

 solitary, sessile or the lateral de- 

 veloping into short spurs, rather 

 large, with about half-a-dozen 

 blunt pale-margined scales. Leaf- 

 scars alternate, moderate, half- 

 elliptical or 3-lobed, little raised: 

 bundle-traces 3, large: stipule- 

 scars lacking. 



Davidia and Nyssa are some- 

 times separated from the Corna- 

 ceae in a family Nyssaceae. Bail- 

 Ion, who named the genus and its 

 one known species, was a versa- 

 tile writer whose Histoire Natu- 

 relle des Plantes, and Diction- 

 naire de Botanique are illustrated 



with the particular care for detail and artistic touch that 



characterize the best French work. 



Twigs and buds glabrous. D. involucrata. 



