70 CHINESE ECONOMIC TREES 



Ostrya japonica Sargent. 



A small tree sometimes 16 m. tall. Young branchlets pubescent. 

 Leaves densely pubescent beneath, round or slightly cordate at the base, 

 5-10 cm. long. Fruit about 4 cm. long, peduncles somewhat shorter. 



N. E. Asia. China: Szechuan and Hupeh. 



OSTRYOPSIS 



A monotypic genus, closely related to Ostrya, resembling it in habit 

 and foliage, but differing in the fruit, which is inclosed in a 3-parted 

 involucre, several inbricated together to form a catkin-like head. 



Ostryopsis davidiana Decasne is a low shrub. 

 Mongolia; N. and W. China. 



CARP1NUS 



Trees. Buds rounded or acute with numerous imbricated scales. 

 Leaves deciduous, alternate, stalked, doubly serrate, pinnately veined, the 

 veins ending in the tips of the teeth; stipules deciduous. Flowers monoe- 

 cious, apetalous, in solitary, lateral catkins; the staminate naked or more 

 or less concealed within scaly buds in the winter. Stamens 3-20, 2 

 forked at the apex, crowded on a pilose torus or receptacle, adnate to the 

 base of each scale. Pistillate flowers (from lateral, scaly winter buds) in 

 catkins or spikes, terminating leafy lateral shoots, the flowers in pairs at 

 the base of each scale, each subtended by a bract and 2 bracteoles which 

 develop into a large leafy, more or less 3 lobed bract. Calyx adnate to 

 the ovary; ovary inferior, 2 celled, 1 ovule in each cell. Nutlet ovate, 

 acute, ribbed, crowned by the remnant of the calyx lobes, embraced at 

 the base by the bract-like involucre. 



About 20 species in Asia, Europe, N. and C. America. Carpinus is 



distinguished by the fruit composed of a nutlet surrounded at the base by 



an involucre of 3-lobed, or serrated bracts. The genus is useful chiefly 



-in ornamental planting. The wood of some species is hard and close 



grained and is used in the making of tool handles and other small services. 



Carpinus cordata Blume. 



Tree up to 15 m. high. Bark gray, scaly and deeply furrowed. 

 Branchlets orange to light brown, conspicuously lenticelled, pubescent at 



