Juncus macer S. F. Gray, * Nat. AiTang. Brit. PI. II. p. 164/ 



Juncus cJihroii'cus Schult. 1. c. p. 240. 



Juncus aristatus Link, * Eiium. Hort. Berol. I. p. 306.' 



Juncus Smithii Kunth, 1. c. p. 349. 



Juncus lucidus Hochst ' in Seub. Fl. Azor. p. 24, tab, 4, f. 1.' 



Juncus Germanorum Steud. Syn. PI. Cyp. p. 305. 



Juncus vacillans Steud. 1. c. 



Juncus comp'essus x efusus 0. Kuntze, 'Taschen-flora v. Leipzig, p. 55.' 



Perennial, grt^en, attaining about 4 decini. high ; rhizome very short, 

 erect or ascending ; roots dense, fibrous, filiform. Stems few to several- 

 cajspitose, very slender, wiry, subterete, striate, foliate at the base, scapiform. 

 Leaves few, erect, narrowly linear, flat, but slightly involute when dry, 

 densely minnte-striate, attaining about 23cm. long; sheath narrow, nar- 

 rowly scarious towards the margin, 2-obtuso-aiiriculate at the top. Panicle 

 terminal, compound, loose, subumbellate with erect or erect-patent unequal 

 branches ; branches and sometimes branchlets di- or trichotomous or sub- 

 umbellate, or depauperate; floral leaves 2 or 3, similar to the common 

 leaves in form and colour, the outer one exceeding the panicle and attaining 

 about 13 cm. long ; bract deltoid-subulate to narrowly deltoid-subulate ; 

 bracteoles minute, deltoid, acute or very acute, scirious, much shorter than 

 the perianth. Flowers very shortly pedicellate, laxly arranged, lateral ones 

 solitary or 2-5-unilateral. Perianth equal, erect-patent, narrowly subulato- 

 lanceolate, acuminate, green and broadly scarious towards margins, 3- nerved, 

 3-3^ mm. long. Stamens 6, included; anther shorter than the filament. 

 Style extremely short ; stigmas 3, erect. Capsule trigonusly lato-ellipsoid, 

 equal to or slightly shorter than perianth in height, obtuse, minutely and 

 shortly mucronate, triseptate, shining, yellowish-umber, 2-2^ ram. long ; 

 [)ericarp not thick. Seeds minute, numerous, obovato- oblong or ellipsoid, 

 minutely albo-apiculate at both ends, yellowish-ferruginous, very subtilily 

 transversely reticulated. 



Nom. Jap. Kusa-i, Shirane-i. 



Hah. Japan, without locality {H. Nakamshtldl); Prov. Musashi: Shiroo- 



shirane in Tsudzuki-gori, si)ont. ! {S. TakahasJul June 6, 1903, Aug, 16, 



1904), Tokyo, prob. introd. {T. Maldnol June 27, 1893); Prov. Suo : Ouchi- 



mura in Yoshiki-gori, prob. introd. {H. Kodzwnal no. 221, Aug. 13, 1905). 



New to the Flora of Japan ; very rare. 



Rosa yesoensis (Franch. et Sav.) IMakino. = B. rugosa x muttifiwa. 



