886 The Trees of Great Britain and Ireland 



unknown. Fruit described as linear-oblong, nearly two inches long, acute, blunt or 

 obliquely truncate. 



This ash grows along the banks of rivers in Turkestan and Songaria, occurring 

 in the Hi region at iooo to 2500 feet elevation. It was introduced into cultivation 

 by the Botanic Garden at St. Petersburg ; and small trees are doing fairly well at 

 Kew. 



Fraxinus Regelii, Dippel, 1 of which I have seen no authenticated specimen, is 

 said to be also a native of Turkestan, and was considered by Koehne 2 to be probably 

 identical with F. potamophila, Herder. There are young plants in the Kew collec- 

 tion, raised from seed sent in 1900 by M. Scharrer, Director of the Botanic Garden 

 at Tiflis, and named F. Regelii on his authority, which are remarkably distinct from 

 any ash known to me, and differ from Dippel's description of F Regelii in the larger 

 size of the leaflets, which are crenate and not dentate in serration. The Tiflis plants 

 have the young branchlets glabrous, purplish; leaflets (Plate 265, Fig. 25), five or 

 seven, about 3 inches long, stalked, the base of the leaflet often decurrent on one 

 side of the petiolule to its insertion ; terminal leaflet obovate or rhomboid ; lateral 

 leaflets ovate or oval ; all shortly acuminate or cuspidate at the apex, unequal at 

 the base, crenately serrate ; bluish green and glabrous on the upper surface ; pale 

 green and slightly pubescent on the sides of the base of the midrib on the lower 

 surface ; rachis elongated, terete, glabrous, with a shallow groove on its upper side. 

 The identification of these plants with F. Regelii must be left uncertain. 



(A. H.) 



FRAXINUS RAIBOCARPA 



Fraxinus raibocarpa, Regel, in Act. Hort. Petrop. viii. 685 (1884). 



A small tree. Branchlets brown, minutely pubescent, glandular. Leaflets 

 (Plate 266, Fig. 29), five, upper subsessile, lower stalked, about 1^ inch long, oval, 

 unequal and rounded at the base, acute or obtuse at the apex, usually entire in 

 margin without cilia ; under surface glabrous, with a few minute brown glands. 

 Leaf-rachis slightly glandular, with a wide open groove on its upper side. Fruit 

 in leafy panicles, arising on the current year's shoot ; samara surrounded at the base 

 by the persistent calyx, curved, falcate ; body terete and rayed ; wing terminal, 

 very broad, spathulate-obovate, obtuse. 



This species, of which the flowers are unknown, belongs apparently to the section 

 Ornus. It was discovered in 1882 by Regel at elevations of 6000 to 7000 feet in 

 the mountain valleys of eastern Bokhara and Turkestan ; and was introduced into 

 cultivation shortly afterwards by the St. Petersburg Botanic Garden. Small plants 

 at Kew have grown very slowly, and this species does not seem likely to be worth 

 cultivating in this country. (A. H.) 



1 Laubhohkunde, i. 97, fig. 53 (1889), described from plants sent out by the St. Petersburg Botanic Garden as F. sogdiana, 

 an entirely different species, referred to on p. 883, note I. 

 1 Deutsche Dendrologie, 515 (1893). 



