V2'2 



ARBORETUM ET FllUTICETUM BRITANNICU.M. 



Genus II. 





NEGU'NDO Moench. 



The Negundo, or Box Elder. Lin. Syst. 

 DiceYna PentanJria. 



Identification. Moench Meth., 334. ; Dec. Prod., 1. p. 596. ; Don's Mill., I. p.C47. and 651. 



Synonyines. A^cex Lin. ; Negiindiu7n Rafinesque. 



Derivation. This genus was constituted from A\eT Negiyido L. ; but the meaning of the latter 

 word is unknown. Probably, it maj' be merely the Illinois name of Gigueres (from giguer, to 

 romp, alluding to the tremulous and playful motion of the long pinnated leaves) Latinised. 



Gen. Char. Sexes dioecious. Flowers without a corolla. Calyx with 43 

 unequal teeth. Male flowers upon thread-shaped pedicels, and disposed 

 in fascicles ; anthers 4 3, linear, sessile. Female flowers disposed in 

 racemes. {Dec. Prod.) Deciduous trees, natives of North America. 



Leaves compound, opposite, exstipulate, deciduous; impari-pinnate. 

 There is only one species in British gardens. 



If 1. iV. FRAXiNiFO^LiUM Nutt. The Ash-leaved Negundo. 



Identification. Nutt. Gen. Amer., l.p. 



2.53. ; Dec. Prod., 1. p. 596. ; Don's 



Mill., 1. p. 651. 

 Si/nonyynes. A^cer Negundo L., Mich. 



Arb. ; K. aceroldes Mce?ic/i and Torr. 



Sf Gray ; Kegundium americanum 



Rafin.; the Ash-leaved Maple, the 



Black Ash ; E'rable k Feuilles de 



Frene, Fr.\ E'rable a Giguieres, Illi- 

 nois; Eschenblattriger Ahorn, Ger.\ 



Acero araericano, Ital. 

 Engravings. Mich. Arb., 2. t. 16.; 



Schmidt Arb., 1. t. 12.; Wats. Dend., 



t. 172.; the plate of this species in Arb. 



Brit., Istedit., vol.v.; and our fig. 164. 



from Schmidt. 



Spec. Char., Src Leaves of from 

 3 to 5 leaflets, the opposite 

 ones coarsely and sparingly 

 toothed, the odd one oftencr 

 3-lobed than simple. (Dec. 

 Prod.) A deciduous tree, of 

 the middle size. Canada to 

 Carolina. Height 13 ft. to 

 30 ft. ; in England 30 ft. to 

 40 ft. Introduced in 1688. 

 Flowers yellowish green, ap- 

 pearing with the leaves; 

 April. Keys brown ; ripe in 

 August. Decaying leaves of a rich yellow. Naked young wood smooth, 

 and of a fine pea green. The tree in the Hort. Soc. Garden is a male ; but 

 there is a female plant in the collection of W. Borrer, Esq., Heiifield. 



164. A't^nJo J'raxinifolium. 



Varieties. 



5^ N 



. f. 2 crispum G. Don. (The plate in Arb. Brit., 1st edit., vol. v.; and 

 ouv flg. 163.) Leaves variously cut and curled. The plant of this 

 variety in the arboretum of the Hort. Soc. is a male : the inflo- 

 rescence consists of pendulous panicles of flowers, that are green, 

 with some redness from the colour of the anthers ; and each is 

 placed upon a slender peduncle of about 1 in. long. 

 N. f. 3 violaccttm Booth. Young shoots covered with a violet bloom. 

 This appearance is not uncommon in the young shoots of different 

 species of J^ccr as well as in Negundo, 



