Observations on the Flora of Japan. 



{Continued from p. 30) 



By 



T. Makino. 



Arundinaria Tootsik (Sieb.) Makino in Bot. Mag., Tokyo, XIV. 

 (1900) p. 62 (Jap.) ; Id. in Descr. d. Prod, forest, d. Jap. exp. a 1'Exposit. 

 univ. d. 1900, p. 38; Matsum. Ind. PI. Jap. II. 1, p. 90. 



Bambos Tootsih Sieb. Syn. PI. Oeconom. Jap. in Verh. Batav. Gen. 

 XII. (1830) p. 5. 



Rhizome creeping. Culm attaining 5 m. in height and 3^ cm. in 

 diametre, erect, terete, but semiterete and often flexuous above, fistulose, 

 glabrous, more or less finely striate, darkish green and often purplish ; 

 nodes bi-annular, conspicuously prominent, piloso-tomentose with purple 

 hairs when young ; internodes long, the longest one about 5 decim. ; main 

 branches erect-patent, 3 to a node of culm and then subfasciculate ; branchlets 

 fasciculate, sub-semiterete, prominent at nodes, with deciduous sheaths 

 which are angustato-lanceolate in the upper ones and subulato-deltoid in 

 the lower ones. Leaves dense, about 3-9 to a branchlet, approximate, 

 lanceolate, or angustato-lanceolate, acuminate with a very sharp point at 

 the apex, obtuse or acute at the base and decurrent to a distinct petiole 

 (which is 3-10 mm. in length), 6-22 cm. long, 1-3A cm. broad, scabro- 

 ciliated on the margin, thinly chartaceous, green and glabrous above, 

 pubescent and subglaucous beneath ; veins 4-8 on each side ; venules very 

 finely tessellate; ligule short, truncate; sheath glabrous, ciliated on the 

 margin, striate ; cilia of mouth long (the longest one 1^ cm.) and erect or 

 radiate, deciduous. Culm-sheath ovato-lanceolate, green, purpulish towards 

 the margin, glabrous, but ciliated with patent purple pilose hairs, striate, 

 subpatently dense-pilose with dark-purple hairs at the base, long-ciliated at 

 the top ; ligule erect, short, broad, truncate, minutely ciliated, puberulent 

 dorsally ; microphyll linear or linear-lanceolate, gradually acuminate, ciliato- 

 scabrous with purple spinulose hairs on margin, chartaceous, green, slightly 

 purplish towards the apex, closely many-nerved. Inflorescence paniculate, 

 cernuo-pendulous, or ascending, loose or rather dense ; peduncles loosely 

 branched, narrow, prominent at nodes, glabrous ; sheath subulato-lanceolate 



