Observations on the Flora of Japan, 



Fasciculus IV. 1904. 



By 

 T. Makino, 



Assisfanl in the Botcuiiml Institute, Science 

 College, Imperial University of Tokyo. 



Natsiatum sinense Oliv. in Hook. Ic. PI. XIX. (1889), tab. 1900; 

 Diels Fl. Centr.-Chin. in Engler's Bot. Jahrb. XXIX. (1901), p. 447; 

 Bretschn. Hist. Eur. Bot. Disc. Chin. p. 780. 



Naisiaium japonicum Makino in Bot. Mag., Tokyo, VII. (1893) p, 

 119. 



Deciduous scandent shrub. Branches slender, dextorse, laxly ramulose, 

 avellaneous-griseous, glabrate, but disparsedly ad pressed- hirsute or densely 

 tomentoso-hirsute in young shoot, distributed with small lenticels ; scars of 

 leaves slightly prominent and orbicular, with a flat face ; leaf-bud naked 

 (without bud-scales), tomentose with isabel-coloured hairs. Leaves alternate, 

 long-petiolate, exstipulate, ovate or elliptical-ovate, cordate at base, acumi- 

 nate, coarsely repand-dentate with apiculate tip, disparsedly piloso-hirsute 

 on both surfaces (hairs denser beneath), 5-12 cm. long, 3-9 cm. broad, 

 membranaceous, green above, paler beneath ; midrib prominent beneath ; 

 lateral veins b-Q on each side ; erect-patent, hardly arcuate, reaching the tip 

 of teeth of the margin ; main veinlets transverse between lateral veins, the 

 small veinlets delicate and numerously anastomosing; petiole slender, at- 

 taining about 8 cm. long, disparsedly adpressed-hirsute. Panicle in the axil 

 of leaves and fallen leaves, laxly ramose into slender filiform pedicels 

 which are much longer than flowers, cernuo-pendulous, 2-6-flowered, attaining 

 about 8 cm. in length, disparsedly ad pressed- pilose. Flower (staminate) 

 regular, 9-12 mm. across. Calyx much smaller than corolla, deeply 5- 

 parted, 3 mm. or little more across, patent, carnosulate, green, densely 

 covered with antrorsely adpressed fulvous hirsute hairs externally, glabrous 

 internally ; lobes deltoid-ovate, obtuse. Corolla carnosulata, viridescent, 

 5-petaled, valvate in bud, coherent into a broad campanulate glabrous 

 tube at the base ; lobes patent, oblong-lanceolate, attenuatedly acuminate 



* Botanical Magazine, Tokyo, Vol. XVIII. (1904). 



