CLASSIFICATION AND DESCRIPTION 



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stellate hairs; flowers and fruit in long racemes. A beautiful low 

 tree, 6 to 12 ft. high ; from Japan. Hardy as far north as Philadel- 

 phia, but needing a little protection in Massachusetts and Missouri. 



GENUS 57. PTEROSTYRAX. 



Similar to Styrax, but with the fruit in panicles, 5- 

 winged, conical, and crowned with 

 the persistent base of the style. 



Pterostyrax corymbosum, Sieb. 

 Leaves deciduous, 2 to 5 in. long, feather- 

 veined, petioled. ovate, rarely cordate 

 at base, sharply serrate, with stellate 

 hairs. Shrub or small tree, 10 to 12 ft. 

 high, cultivated from Japan ; with ashy- 

 gray bark, and white flowers turning 

 yellowish or purplish with age; blooming 

 in May, fruit ripe in August. Not per- 

 fectly hardy in Massachusetts. 



P. corymbfcsum. 



GENUS 58. HALESIA. 



Small trees or shrubs with alternate, simple, deciduous, 

 serrate leaves. Flowers large, 1 in. long, conspicuous, 

 white, hanging, bell-shaped, monopetalous,4-lobed; bloom- 

 ing in spring. Fruit with a single, rough, elongated, bony 

 nut surrounded by a 2- to 4- winged coat ; ripe in autumn. 



Wood light-colored, very hard and fine-grained. 



1. Hatesia diptera, L ( TWO-WINGED Sn> 

 VERBELL TKEE.) Leaves large (4 to 5 in. 

 long), ovate, acute, serrate, softly pubescent. 

 Fruit with 2 conspicuous, broad wings, some- 

 times with 2 intermediate narrow ridges. A 

 small tree or a large shrub, 

 wild in the south, and cul- 

 tivated as far north as 

 New York City. 



H. diptera. 



2. Halesia tetraptera, L. (FOUR-WINGED 

 SILVERBELL TREE.) Leaves smaller (2 to 4 in.), 

 oblong-ovate, finely serrate. Fruit smaller, with H. tetraptera. 



