﻿IDOfi.] 



OBSERVATIONS ON THE FLORA OF JAPAN. J) 



Enum. PI. II. p. 88 ; Britt. et Br. 111. Fl. K Un. St. et Can. I. p. 242, 

 tig. 562, non Torr. 



Cyperus Michauxianus Shultes, Syst. Veg. Mant. II. p. 123 (1824) ; 

 A. Gray, Man. Bot. ed. 5, p. 554; Boeck. in Linn*ea, XXXVI. p. 400. 



Cyperus virginicus Jacq. ex Steud. Syn. Cyp. p. 46. 



Annual?, attaining about 6 decim. in height; roots fibrous. Stem 

 erect, trigonous, glabrous, leafy below. Leaves few, linear, acuminate, 

 usually shorter than the stem, spinuloso-scabrous on margin, about 6- 8 mm. 

 wide ; sheath long, with a truncate mouth. Involucral leaves 5, spinuloso- 

 scabrous on margin, attaining about 10mm. wide ; the outer one much 

 exceeding the umbel, attaining about 36cm. long. Umbel compound, 7- 

 18 cm. across, 5-7-rayed ; rays usually short, sometimes attaining about 13 cm. 

 long, unequal, often with 2nd involucral leaves usually not exceeding spikes, 

 the outer one with 5-7-spikes, lateral spikes usually shorter than the terminal 

 one and patent or reflexed, sometimes compound in luxuriant one ; basal 

 sheath tubular, with an oblique orifice. Spikelets many to a spike, patent or 

 more or less reflexed, dense or subdense, very narrow, linear-subulate, sub- 

 terete, about 8-16-flowered, 8-23 mm. long. Kachilla usually submoniliform, 

 with short internodes ; wings broad, obtuse at the apex, persistent, clasping 

 the achene. Glumes scattered, imbricated, ovatoelliptical, with an acumen 

 under the obtuse apex, adpressed, flavo- ferruginous, viridescent in the back, 

 faintly nerved. Achene oblong-obovate, compressed-triangulate, equal to 

 no slightly longer than internodes in length ; style 3-fid, glabrous, branche 

 filifosrm. 



Nom. Jap. Kin-gay atsuri (nov.). 



Hab. Bonin Isl. (Herb.l Y. TanaJca) ; Loochoo (H. Kuroiiva !), Shuri 

 in Isl. Okinawa (H. Kuroiiva ! Dec. 1894, Aug. 1897) ; Prov. Awa (Boshu) : 

 Hodyo (K. Yamadzutal 1905). 



New to the Flora of Japan ; seems to be common in Loochoo. It 

 is a remarkable fact that this species was found in the Old World ! 



Echinolytrum verruciferum (Maxim) Makino. 



Isolepis verrucifera Maxim. Prim. Fl. Amur. (1859) p. 300 ; Kegel, 

 Tent. Fl. Ussur. n. 544. 



Fimbristylis verrucifera Makino in Bot. Mag., Tokyo, IX. (1895) p. 

 259, et XVII. (1903) p. 46. 



Fimbristylis nipponensis Makino, 1. c. VI. (1892) p. 47, nomen nudum. 



