1003. J 



OBSERVATIONS ON THE FLORA OF JAPAN. 189 



the aohene but lower than the rostrum, retrorselj scabrous. Stamens 

 2. Achene narrowly oblong, smootli, pale-fiavescent, 2-21 mm. long ; 

 rostrum angustato conical, equal to or shorter than the achene ; style slender, 

 2-iid above, the branches about J as long as the main portion. 



Hah, Prov. Echigo : Mt. Shimidzu-toge {T. Maldnol Sept. 1888); 

 Prov. KiKUCHU : Mt. Kurikoma {T. Mahino ! Aug. 1890) ; Prov. Rikuzen : 

 Mt. Katta-dake (F. Yabe ! herb. S3. Coll. Imp Univ. Tokj'o, Aug. 17, 1898). 



An allied spjcies to the North- American lii/nchospora capillacea Torr. 

 I have named this species in honour of Mr. Atsushi Yasuda, Professor of 

 Biology in the Fourth High School in Sendai, prov. Rikuzen. 



Rynchospora (Dichostylea3) Hattoriana Makino, sp. nov. 



(PI. VII. %. 11.) 



Casspitose, green, attaining .55 cm. in height, estoloniferous ; rhizome 

 very short, v^ith dense fibrous roots. Culm erect, slender, setaceo-filiform 

 above, one-snlcate on one side, subscabrous in the apical portion, laxly 

 foliate, laxly branched and disparsedly and distantly corymbiferous through- 

 out, the branches erect, very much shorter than the culm. Leaves much 

 shorter than the culm, angustato-linear, attaining 1§ mm. wide, trigonous 

 and scabrous towards the obtuse apex. Corymbs small, fasciculately 3-7- 

 spiculose, attaining 5 mm. across; the lateral ones shortly peduncled ; bracts 

 setaceous. Spiculge erect, 2-3-ilowered, ovato-lanceolate, shortly acuminate, 

 ferrugineo-brunneus, 3^ mm. long. Empty glumes 2-3, narrowly ovate ; 

 the flowering ones ovate or elliptico-ovate. Setae 6, slightly longer than 

 the achene, ferruginous, retrorsely scabrous. Stamen 1 ; filament equal 

 t;0 the rostrum of the mature achene in height. Achene orbiculato-obovate 

 or broadly obovate, biconvex, castaneoiis, or pale-stramineous and sometimes 

 with a castaneous stain, transversely slightly rugulose, IJmm. long; rostrum 

 angustato-conical, slightly shorter than the achene; style deeply bifid, the 

 branches i as long as the main portion. 



Hah. Prov. Sag a mi : Hokone {T. Maldno\ Sept. 15, 1886); Prov. 

 IwASHiRo: Mt. Shinobu {K. Nemoto\ Sept. 12, 1894); Prov. Mtkawa : 

 Takashi-hara {T, Makinol Aug, 1899). 



I have named this in honour of Mr. H. Hattori of the Botanical 

 Institute, Science College, Imp. Univ. Tokyo. 



Rynchospora (Dichostylea?) alba Yahl Enum. PI. II. (1806) p. 236 ; 

 Willi. Enum. PI. Hcrt. Bot. Berol. (1809) p. 71; Spreng. Syst. Veg. I. p. 



