38 



HOMOIOCELTIS ASPERA. A Japanese ornamental tree, up 

 to GO feet high, having the appearance of a hackberry {Celtis spp.), 

 with the slender branches forming a dense head, rather inconspicu- 

 ous, greenish flowers, and small black drupes. Cultivated for its 

 foliage and sometimes planted as a shade tree. Not hardy north of 

 Georgia. 



42189. HYDRANGEA BRETSCHNEIDERI. From the Ar- 

 nold Arboretum, Jamaica Plain, Mass. Ornamental shrub, 8 to 10 

 feet in height, forming a sturdy bush with flaky bark, nearly oblong, 

 dull green, slender-pointed leaves, and clusters of white flowers 4 to 

 6 inches across. The sterile flowers are three-fourths to 1^ inches 

 across. FloAvers in July. Almost hardy in the North. Collected by 

 X)r. Bretschneider in northern China. 



43689. HYDRANGEA ROSTHORNII. From the Arnold Ar- 

 boretum, Jamaica Plain, Mass. Ornamental flowering shrub, up to 

 12 feet in height, with slender-pointed leaves. 4 to 9 inches long, and 

 flower clusters 4 to 7 inches across. The sterile flowers are white or 

 purplish and 1 to IJ inches across. Blooms in July. Native of 

 western China. 



43690. HYDRANGEA XANTHONEURA. From the Arnold 

 Arboretum, Jamaica Plain, Mass. Hardy ornamental flowering 

 shrub, up to 15 feet high, with close chestnut-brown bark, bright 

 green, elliptical leaves, marked with yellow veins and smooth or 

 slightly hairy on the veins beneath; and rather loose flat-topped 

 flower clusters. Fertile flowers dull white; sterile flowers creamy, 1^ 

 to 2 inches across. Native of western China. 



43691. HYDRANGEA XANTHONEURA SETCHUENEN- 

 STS. From the Arnold Arboretum, Jamaica Plain, Mass. Hardy 

 ornamental flowering shrub up to 15 feet high, with close, light-brown 

 bark, bright-green elliptical leaves, very hairy on the under side, 

 and rather loose flat-topped flower clusters. Fertile flowers dull 

 white ; sterile flowers creamy white, 1 J to 2 inches across. Native of 

 western China. 



HYMENAEA COURBARIL. Handsome tree with curious com- 

 pound leaves consisting of two leaflets. Similar to Bauhinia, but 

 leaflets not united. The thick woody shells of the large pods con- 

 tain a resin said to be used in the manufacture of varnish. Seeds 

 packed in a thick layer of grayish powdery substance tasting like 

 licorice root ; commonly eaten, and often sold in the markets. Native 

 of tropical America. 



