May 1912.] T. MAKTNO.- OBSERVATIONS ON THE FLORA OF JAPAN. 147 



cent hue, 12-23 mm. long. Calyx thinly pubescent, herbaceous, 

 light-green and usually with a purpurascent shade, deciduous,;' 

 tube short, obconico-obovate, acutely reduced and continued to 

 the pedicel at the base, 4-6 ram. long, 3-4- mm. across in the 

 top, pubescent hairs patent, the inner side yellowish-greenish 

 and nectariferous in the lower half but white and lately pur- 

 purascent in the upper half; lobes 5 or 6 and often accompanied 

 by the few small accessory ones between them, with close 

 sinuses between lobes, patent, longer than the tube, 5-8 mm. 

 long, 3-5 mm. wide, lato- ovate, ovato-elliptical, or oval- 

 elliptical, obtuse or rounded or acutish at the apex, serrulate 

 and thinly ciliated on margin, depressedly thin-pubescent ex- 

 ternally, glabrous and slightly concave internally, triplinerved 

 towards the median portion and reticulato-venuled towards the 

 margin. Petals several to subnumerous, spreading, obovato- 

 orbicular or obovato-oval, sessile and broadly cuneate at the 

 base, emarginate with rounded lobes and a close sinus at the 

 apex, entire, often plicate in centre, membranaceous, delicately 

 reticulato-nervate, 16-21 mm. long, 13-18 mm. broad, decidu"- 

 ous. Stamens numerous, inserted on the throat of the calyx, 

 erect-patent but erect in the inner ones, unequal in length' 

 attaining about 9 mm. long in the outer longest ones, some of 

 them often stipitato-petaloid ; filament subulato-filiform, gla- 

 brous, white, lately gradually turned to purple ; anther minute, 

 rounded, minutely bifid at both ends, introrse, with oblong 

 anther-cells, 1 mm. long, yellow. Ovary 1, small, ovoid, ses''- 

 sile, green, glabrous, smooth, H mm. long, 2-ovuled ; style 

 erect, slender, equal to or a little exserted upon the stamens in 

 height, pale-green, light-green towards the stigma, glabrous but 

 scantily pilose with spreading hairs at the base above the 

 ovary, 11-14 mm. long ; stigma small, truncate, oval to el- 

 liptical, concave in centre, light-green. Drupe 



Nom. Jap. Naden. 



Hab. Japan, cultivated (T. Makinol). 



This is found in gardens, but its wild tract is yet un- 

 known to us. Florists call it by the vulgar name of Naden. 

 It differs from the various forms of Prunus serrulata Lindl., and 



