292 158. cxPERACEX. 
63. Carex ischnostachya, Steud. Con, 1855, p. 222; Franch. in 
Nouv. Arch. Mus. sér. 3, x. (1898) p. 47 cum syn. p. 96. 
Carex Ringoldiana, Boott, in Mem. Amer. Acad. n.s. vi. (1859) p. 419, 
Carex, p. 199, Ic. Ined. in hb. Kew. 671. 
Lvcuv AncuieELAaO (C. Wright, 365, 367!). Herb. Kew. 
Frequent in Japan. 
64. Carex Jackiana, Boott, in Proc. Linn. Soe. i. (1846) p. 260, 
in Trans. Linn. Soc. xx. (1847) p. 132, Carex, p. 9, t. 25; 
C. B. Clarke, in Hook. f. Fl. Brit. Ind. vi. p. 735; Franch. in 
Nouv. Arch. Mus. sér. 3, x. (1898) pp. 43, 46. 
Carex oxyphylla, Franch. in Nouv. Arch. Mus. sér. 3, x. (1898) pp. 57, 
97. 
Carex instabilis, Boott, MS. 
Yunnan ( Delavay, 2669 !), Mosoyn ( Delavay, 2524 !). 
Khasia, Java. 
Franchet, by inadvertence, founded his C. oxyphylla on the 
same two collections of Delavay which he had cited as the sole 
ground for the occurrence of C. Jackiana in China. The area of 
this species depends on its diagnosis; a var. 2. minor is found in 
Ceylon and the Nilghiris; see Hook. f. in Trimen FI. Ceylon, 
vol. v. p. 113. Several closely allied species occur in Japan. 
65. Carex japonica, Thunb. Fl. Jap. (1784) p. 38; Schkuhr, 
Riedgr. i. p. 115, t. Ww. fig. 110; Baker et S. Moore, in Journ. 
Linn. Soc., Bot. xvii. (1880) p.389; Franch. in Nouv. Arch. Mus. 
sér. 3, x. (1898) pp. 77, 78, var. a et B partim, non Boott. 
Carex Motoskei, Mig. in Ann. Mus. Bot. Lugd.-Bat. ii. (1865-6) 
p. 148; Franch, et Sav. Enum. Pl. Jap. ii. pp. 140, 584. 
Carex aphanolepis, Franch. e! Sav. Enum. Pl. Jap. ii. pp. 152, 580. 
Carex trichostyles, Franch, et Sav. Enum. Pl. Jap. ii. pp. 152, 581. 
Carex Doniana, var. minor, Routt, MS. 
Lut: Peking (Bretschneider!); SurwvaKiNG: Chiensan 
(Ross, 432, 579!); Norra CkNTRAL Cura: Mt. Ngosan 
(Hugh!), Kusan (Hugh, 166!). Mus. Brit.; Herb. Kew. 
Common in Japan. 
This is a slender plant, with scattered spikes; the largest female 
spike, figured excellently by Sehkuhr, is 7 lin. long, ellipsoid ; 
Thunberg described it as “ovate.” Boott united it with the 
Indian C. alopecuroides, D. Don, which view is by no means 
impossible; but then, taking for his “type” the tinest form of 
his broad species, fig. 257 (Boott's C. japonica, type) has spikes 
