Ill 



obtuse or pointed, entire or slightly crenate at the apex, white with a 

 shade of rose color at the middle line on the dorsal surface. Stamens 

 10, in two rows, those of the outer row being longer than the inner ones, 

 which are about -J as long as the petals. Filaments narrowly winged, 

 dimorphous ; those of the outer staminal row with a long slightly curved 

 tooth from the margin at the apex of each wing, while those of the inner 

 row with the teeth of wings belonging to the same filament united into 

 one piece and turned outside. Anthers elliptical, glabrous. Styles 3, 

 distinct, filiform, divergent towards the apex, equal in length with the 

 stamens of the inner staminal row, with a clavate stigma. Disk concave, 

 yellow, pentagonal in outline when young, becoming brown and convex as 

 the fruit rippens. Capsule of a form of an inverted cone, trilobed, 

 crowned with persistent limbs of calyx and basal portion of styles. Seed 

 oblong or oval, surrounded with a narrow wing. 



Habitat. Prov. Musashi : Mt. Mitsumine (M. Shirai, June 1890), Mt, 

 Mitake (F. Suzuki 1893). 



This species is that figured in the " Somoku-Zusetou " under the 

 name of nikko-uisugi. It is also known among Japanese botanists by 

 the name of Ume-utsugi (Honzo Keinio Vol. 32., p. 22. sub. Utsugi.) 

 I collected a specimen of this rare species in fruit at Okunoin on Mt. 

 Mitsumine (Prov. Musashi) in the summer of 1890. I also obtained a 

 living specimen from Mt. Mitake of the same province in 1893, which I 

 planted in the botanic garden of the Agricultural College of the Imperial 

 University at Komaba. This latter plant flowered in the spring of the 

 following year, and afforded materials for my study. 



The wood of this species is harder and more tenacious than that of 

 the other species of Japanese Deutzia, and the wooden nail made of its 

 wood is much esteemed by cabinet-makers. As the flower of this specices 

 is rather pretty, it is sometimes seen in cultivation. 



This species may at once be distinguished from the other species of 

 the same gen us by its unifloral inflorescence and also by the pedicelled 

 hairs of the young branch. These two characters are peculiar to this 

 species. Deutzia grandiflora of northern China approaches this species in 

 its l-(3)-flowered inflorescence, but' the other characters widely separate 

 these species. 



