900 The Trees of Great Britain and Ireland 



FRAXINUS ANOMALA, Utah Ash 



Fraxinus anomala, Watson, King's Rep. v. 483 (187 1); Sargent, Silva N. Amer. vi. 39, t. 266 

 (1894), and Trees N. America, 765 (1905). 



A small tree, attaining about 20 feet in height, with bark shallowly fissured by 

 narrow ridges. Branchlets quadrangular, slightly four-winged, glabrous, with in- 

 conspicuous reddish lenticels. Leaves (Plate 262, Fig. 7) simple (occasionally two- 

 to three-foliolate), ovate or obovate, acute or rounded at the apex, base cuneate 

 or cordate, slightly crenulate or entire in margin, glabrous beneath. Petiole 

 flattened and grooved above, about half the length of the blade of the leaf. 



Flowers (section Leptalix) in panicles from the axils of the leaf- scars of the 

 preceding year's shoot, with a calyx, but corolla absent. Fruit oblong, with a rounded 

 wing surrounding the long, flattened, striately nerved body. 



This curious tree, so remarkable amongst the ashes, in its usually simple leaves 

 and quadrangular stems, occurs in Colorado, Utah, and Nevada. 



It is in cultivation at Kew, where it is perfectly hardy, and is worthy of a place 

 in collections on account of its peculiarities. (A. H.) 



FRAXINUS QUADRANGULATA, Blue Ash 



Fraxinus quadrangulata, Michaux, Fl. Bor. Am. ii. 255 (1803); Loudon, Arb. et Frut. Brit. ii. 

 1235 (1838); Sargent, Silva N. Amer. vi. 35, t. 263 (1894), and Trees N. Amer. 761 (1905). 



A large tree, attaining 120 feet in height and 9 feet in girth. Bark separating 

 irregularly into large thin plates. Branchlets glabrous, stout, quadrangular; with 

 four wings between the nodes, persisting and becoming corky in the second year ; 

 lenticels white. Leaflets (Plate 265, Fig. 22), five to nine, 3 to 5 inches long; on 

 pubescent stalklets, \ to \ inch long ; ovate or oval, rounded or broadly cuneate at 

 the base, acuminate at the apex, regularly serrate, glabrous above ; under surface 

 covered with scattered whitish tomentum, densest towards the base. Leaf-rachis 

 pubescent, with a shallow open channel on its upper side. 



Flowers (section Leptalix) in panicles from the axils of the leaf-scars of the 

 previous year's shoot, perfect, calyx obsolete, corolla absent. Fruit oblong ; body 

 long, flat, with numerous faint rays, surrounded by the base of the broad wing, which 

 is emarginate at the apex. 



This species is readily distinguished from all the other species with numerous 

 leaflets by the conspicuous wings on the branchlets. (A. H.) 



The blue ash though little known outside of botanic gardens in Europe is, next 

 to the white ash, the largest of its genus found in the United States. It is unknown 

 in New England or Canada, though hardy at Ottawa, where I saw it in the 



