Ian.] OBSERVATIONS ON THE FLORA^OF JAPAN. 109 



Eleocharis (Limnochloa) fistulosa Link 'Jahrb. III. (1820) p. 78 ' ; 

 Schultes in Roem. et Schultes Syst. Veg. II. Mant. (1824) p. S9 ; Kunth 

 Enuui. PL II. p. 155; Steud. Syn. Cyp. p. 80; Miq. Fl. Ind. Batav. III. 

 p. 302 ; Clarke in Hook. fil. Fl. Brit. Ind. VI. p. 626„ et in Journ. Linn. 

 Soc. XXXIV. p. 48. 



Heleocharis fistulosa Bceck. in Linnaea XXXVI. p. 472 ; F. Muell. 

 Fragm. Phytogr. Austral. VI. p. 93, et VIII. p. 472; Benth. Fl. Austral. 

 VII. p. 293. 



Scirpus fistulosus Poir. Encycl. Meth. VI. p. 749 ; Ikera. et Schultes 

 Syst. Veg. II. p. 127 ; Spreng. Syst. Veg. I. p. 205. 



Lirmocharis fistulosa Nees in Linnsea IX. p. 294. 



Scirpus acutangulus Koxb. Fl. Iud. I. p. 213 ; Spreng. 1. c. 



Eleocharis acutangula Schultes 1. c. p. 91. 



Limnochloa acutangula Nees in 'Wight Contrib. p. 114', et in Linmoa 

 IX. p. 294. 



Scirpus medius Roxb. 1. c. 



Eleocharis media Schultes 1. c. p. 91 ; Steud. 1. c. p. 81. 



Limnochloa media Nees 11. cc. 



Eleocharis planiculmis Steud. I. c. p. 80 ; Zolling. Syst. Verz. Iud. 

 Archip. I. p. 62; Miq. 1. c. p. 301. 



Scirpus angulatus Willd. herb. 1190", ex Kunth I.e. 



Stoloniferous ; roots fibrous. Steins pauci-pluri-fasciculate, attaining 

 about 37 cm. long (in my specimen), about 3^ mm. in diameter, not trans- 

 versely septate, triquetrous with smooth acute edges, smooth ; basal vaginae 

 thinly membranaceous, fistulose, obliquely truncate, acute at the apex, the 

 uppermost one longer and attaining about 9 cm. long. Spicula terminal, 

 solitary, erect, about as broad as the stem, narrowly cylindrical, gradually 

 narrowed above with an acute apex, many-flowered, viridescent, 16-20 mm. 

 long; rachilla glabrous; basal scale 1, erect, shortly vaginate at base, angulate 

 at apex, carinate dorsally, chartaceous, but membranaceous on margin, many- 

 nerved, green. Glumes rather laxly imbricated, erect, herbaceo-subrigid , 

 concave, finely striate when dry, often very obscurely carinate, lato-ovate, 

 muticous, rounded-obtuse and entire or minutely obscurely erose at apex, 

 narrowly scarious towards margin, smooth-margined, punctate with minute 

 ferruginous spots and obscurely sub-numerous-nerved towards the centre, 

 stramineo-viridescent, opaque, the midrib distinct and disappears before reach- 

 ing the apex. Set?e 6, pale-stramineous, unequal in length, some slightly 

 longer and some slightly shorter than the caryopsis, retrorsely scabro-spinu- 

 lose. Stamens 3; filament inembranaeeo-filiform ; anther linear, acute at 



