1903.] OBSERVATIONS ON THE FLORA OF JAPAN. 49 



tractecl into a head, but often 1 -6 -radiate ; radii divaricate- paten t^ unequal, 

 about 5 cm. long in the well developed one ; spicul^e attaining 10 mm. in 

 length having 32-flower?. 



Hah. Prov. Musashi : Tokyo {J. Ilatsurnura ! herb. Sc. Coll. Imp. 

 Univ. Tokyo, Aug. 3, 1880; T, Maldno\ 1886, Aug. 23, 1888, Aug. 

 1893, 1894, Sept. 22, 1895); Kaminakazato-mura (71 Maldno\ Aug. 17, 

 1888), Koiwa-mura {T. BlaUno ! Aug. 1893, 1894); Prov. Sagami : Hakone (T. 

 Makino ! Sept. 24, 1886) ; Prov. Rikuzen : Sendai {T. 31aldno ! Aug. 1890). 



Pycreus iinioloides (R. Br.) Makino. 



Cyperus unioloides R. Br. Prodr. Fl. Nov. Holl. (1810) p. 216 ; Roem. 

 et Schult. Syst. Yeg. IT. (1817) p. 229 ; Spreng. Syst. Yeg. I. (1825) p. 

 211 ; Steud. Syn. PI. Cyp. p. 54 ; Benth. Fl. Austral. YII. p. 261 ; Clarke 

 in Journ. Linn. Soc. XXI. p. 60. 



Cyperus bromoides Wilkl. mss. ; Rcem. et Schult. Syst. Yeg. II. Mant. 

 (1824) p. 130; Kunth Enum. PI. 11. (1837) p. 8; Steud. I.e. p. 6; 

 Boeck. in Linn^a XXXY. p. 463. 



Cyperus anguJatus Xees (1834) ; Steud. 1, c. p. 12 ; Boeck. 1. c. p. 465. 



Pycreus angidatus Xees in LinnH3a IX. (1834) p. 283 ; Clarke in 

 Hook. fi]. Fl. Brit. Ind. YL p. 593, et in Journ. Linn. Soc. XXXIY. p. 

 17 ; Makino in Bot. Mag., Tokyo, IX. (1895) p. 258. 



Cyperus lanceus F. Muell. Fragm. Phyt. Austral. YIIL p. 259, non 

 Thunb. 



Cyperus luteolus Bceck. in Flora LYIIL (1875) p. 82, ex Benth. 1. c 



Cyperus tosaensis Makino in Bot. Mag., Tokyo, YL (1892) p. 47, 

 (nomen). 



Hah. Prov. Tosa in Isl. Shikoku : Kashiratsudoi {T. Mahino\ Oct. 27, 

 1885). 



It is rarely found in the warm part of Southern Japan. 



Cyperus (Choristachys, Compressi) Iwasakii Makino in Bot. Mag., 

 Tokyo, \l. (1892) p. 47. 



Estoloniferous, glabrous, attaining about 12 decim. in height. Roots 

 fibrous, dark-castaneous. Culm solitary, or 2-3, robust, elate, nearly 

 2 cm. in diameter at the basal portion, obtusely trigonous, smooth, green. 

 Leaves basal, 3-4, longer than the culm, long, broadly linear, long-acumi- 

 nate, aculea to- scabrous on the margin and carina, subcoriaceous, about 

 6-14 mm. wide, green above, paler beneath, the sheath long and spongy in 



