50 THE BOTANICAL MAGAZINE. [Yo i. xxrv. No. 27s. 



Fig. 2. Young sporangium entirely freed from the valves. The con- 

 striction in the lower part of sporangium shews that it is not 

 long after the separation from the epitheca. 



Fig. 3, 4. Further stages of development. Fig. 3. is drawn from an 

 unusually small one. 



Fig. 5, 6. Still further stage in valval and girdle view respectively. 



Fig. 7, 8, 9. The more advanced stages of development. 



Fig. 10. Perizoniuin of an immature spore accidentally broken. 



Observations on the Flora of Japan 



(Continued from p. 35.) 



By 

 T. Makino. 



Wikstroemia (Diplomorpha) Kudol Makino, sp. no v. 

 _ A shrub/ attaining about ljm. in height; branches thick, 

 terete, glabrous, densely covered throughout with lunate sub- 

 discoid al prominent imbricated leaf-scars presenting a very 

 peculiar appearance, avellaneo-brick-coloured. Leaves sparse 



and rosulate at the top of branches, sessile, obovato-oblong, 

 mucronately obtuse or acute at the apex, usually cuneate at the 

 base, entire, subcoriaceous, glabrous, green above, paler beneath, 

 2-4 cm. long, li-2icm» broad ; midrib subulate, prominent 

 beneath ; veins 3-7 on each side, erect-patent ; veinlets in- 

 visible superficially. : Cyme terminal, peduncled, subcapitate, 

 2-3-flo\vered, ebracteate ; peduncle straight, erect, gracile, gla- 

 brous, viridescent, about 8-12 mm. long. Flowers nearly 

 sessile or extremely shortly pedicellate, hermaphrodite. Peri- 



anth about 8mm. long, glabrous, white ? ; tube angustately 

 cylindrical, about l^mm. across; limb about 9mm. in diameter, 

 lobes patent, ovato-lanceolate, the outer 2 acute and about 

 5mm. long, the inner 2 shorter, obtuse, 4mm. long. Stamens 

 8, included, the upper 4 inserted in the middle of perianth-tube 

 and the lower 4 below the middle ; filament very short ; anther 



