XIII. y^/CERA^CEiE. XIV. ^SCULA^CE^. 



1^3 



1(15. ^t^iJiidj /raxinifolium cri'ipum. 



A rapid-growins tree ; very ornamental, from its compound leaves, and tlie 

 fine pea-green of its young shoots; arriving at maturity in 15 20 years. 

 American seeds, which ought to be sown as soon as possible, or layers, in any 

 common soil. 



Other Species of Negundo. N' californicum Tor. Sf Gray, found by Douglas, 

 is supposed to be a new species ; but neither fruit, nor lull-grown leaves, are 

 described. 



Order XIV. ^SCULA^CE^E. 



Synonytnes. Castankceae Link ; Hippocastanese Dec. 



OliD. Char. Calyx campanulate, 5-lobed. Ovary roundish, trigonal. Seeds 

 large and globose ; albumen wanting. Embryo curved, inverted ; with 

 tleshy, thick, gibbous cotyledons, not produced above ground in germination. 

 Plumule large, 2-leaved. Deciduous trees, natives of North America and 

 Asia. 



Leases compound, opposite, exstipulate, deciduous ; leaflets 3 7, ser- 

 rated. Flowers terminal, in racemes, somewhat panicled. All the known 

 plants of this order cross-fecundate freely, and by most botanists they are 

 included in one genus ; but so numerous are the garden varieties, that we 

 have thought it more convenient to follow those authors who separate the 

 species into two genera. These are ^"scidus and Pavia, which are thus 

 contradistinguished : 



-^'scuLUs L. Capsule echinated. 

 PaV/^ Boerh. Capsule smooth. 



