24 



3 ; filament ligulate, glabrous, as long as the style ; anther linear, pale- 

 yellow, apiculate at the apex. Style exserted from the glume, slender, 

 ligulato-filiform, compressed, glabrous, slightly thickish towards the base, 

 3-ficl ; the branches filiform, i as long as the main portion. Caryopsis 

 elliptical, trigonous, smooth, 1 mm. long, pale-stramineous, with sub-per- 

 sistent style which is longer than the caryopsis. 



Hah. Prov. Musashi : Tokyo {T. 31akino ! Oct. 1890, Oct. 1893, Sept. 

 1895). 



The largest species among the Japanese Cyperus, and is occasionally 

 found growing in pond or ditch in Tokyo. I have named this species in 

 honour of Kwan-yen Iwasaki, the author of well-known " Honzo-Dzufu " 

 (^^mtt), a great work on Japanese plants. 



It is abundantly cultivated in boggy field as a useful plant in Corea, 

 where a sort of floor mat is made of its culms, according to T. Uchiyama, 

 of the Botanic Garden, Science College, Imperial University of Tokyo, 

 who travelled over that country under the order of the University for the 

 collection of plants in 1902. 



Polygon atum nipponicum Makino, sp. nov. 



Glabrous throughout, the size of P. officinale All. Stem curved, 

 terete, but subsulcate in foliate portion. Leaves alternate, elliptical or 

 oblong-elliptical, obtuse, subsessile, green above, glaucous beneath, thin 

 when dried, about 9-12 cm. long, 4-61 cm. broad ; main nerves 5 ; veinlets 

 numerous, forming rectangular spaces between them by their transverse venules. 

 Peduncle 1 to each leaf-axil, cernuous, about l;^-2 cm. long, involucrate at 

 the end, umbellately 2-5-flowere(l. Involucres 4-5, perianth-like, cam- 

 panulate, slightly reflexed at the apex, lanceolate, shortly acuminate, entire, 

 thinly membranaceous towards the margin, 1 or sub-3-nerved, green, about 

 l^cra. long. Flowers pedicellate, the buds included within the involucres. 



Hah. Prov. Iwashiro {K. Nentoto\). 



Bare. This species is characterized by its perianth-like involucres. 



Eritrichium (Eueritrichium) nipponicum Makino, sp. nov, 

 Myosotis sp. herb. Sc. Coll. Imp. Univ. Tokyo, et Cat. Herb. Coll. 

 So. Imp. Univ. Tokyo, (1886) Suppl. p. 284. 



Perennial, densely ca3spitose, with about 4-10 stems, hirsute-subcanescent 



