1*05]. 



OBSERVATIONS ON THE FLORA OF JAPAN. 29 



concave, subcarinate with a smooth edge, delicately and indistinctly 6-9-striate 

 on eash side of the midrib, 4-41 mm. long, 2-3 mm. broad, the outermost 

 one erect, shorter or sometimes somewhat longer than spikelet, with a flower 

 in its axil, subulato-oblong to oblong-linear, or linear, acute or subobtuse, 

 entire, often leaf-like and thickish above, 3-4-nerved, with transverse veinlets 

 between nerves, delicate and embracing the base of spikelet at the base, 

 4-7 mm. long. Kachilla notched, glabrous. Stamens 3 ; filaments fili- 

 form ; anther linear, yellow, subbifid-truncate at the base, acute with a 

 connective-tip at the apex, about 11 mm. long. Ovary sessile, oblong- 

 elliptical, compressed, smooth, pale, about 1 mm. long ; style much longer 

 than the ovary, about 5^ mm. long, rather stout, very deeply bifid, arms 

 filiform, minutely puberulent, much longer than the smooth connate portion. 



Nom. Jap. Byakko-i, Uki-i (nov.). 



Hah. Prov. Iwashiro : Tonokuchi-hara (G. Nakaharal Aug. 1904); 

 Prov. Shimotsuke : Otahara (T. Watanabe \ Jan. 3, 1905). 



Rare. This species is very closely allied to Scirpus fluitans Linn., 

 from which it differs by its robustness and stiffness in every respect, quite 

 viridescent habit, broader and longer leaves, larger and numerous-flowered 

 spikelets, and the more or less distinctly leaf-like lowest glume. Possibly 

 a remarkable variety of S. fluitans Linn. 



Taraxacum officinale Weber, var. s. lividum Koch, Syn. Fl. 

 Germ, et Helv. ed. 3, p. 367 ; Herd. PI. Radd. III. 4, pp. 39, 43 ; A. 

 Gray. Syn. Fl. N. Amer. I. 2, p. 440. 



Leontodon lividus Waldst. et Kitaib. ' PI. Rar. Hung. II. p. 120, tab. 

 115'; Willd. Sp. PI. III. p. 1545. 



Taraxacum palustre DC. Fl. Fr. IV. p. 45, et Prodr. VII. p. 148. 



Leontodon palustre Smith ' Fl. Brit. II. p. 823.' 



Leontodon Taraxacum /9. palustre Wimm. et Grab. ' Fl. Sil. II. p. 

 225.' 



Taraxacum officinale var. palustre Syme Engl. Bot. ed. 3, V. p. 143, 

 tab. 804. 



Leaves glabrous or subglabrous, obovato- oblong, gradually long-attenuated 

 below, rounded-obtuse with a sharp tip at the apex, sharply and irregularly 

 subruncinato-dentate or repand-subdentate. Flower yellow. Scape thinly 

 tomentose under the head, exceeding the leaves, in fruit attaining about 

 5 decim. in height and glabrate. Involucre glabrous, nigrescent when 



