1903.] 179 



Observations on the Flora of Japan. 



(Continued from p, 164.) 



By 



T. Makino, 



Assistant in the Botanical Institute, Science 

 College, Imperial University of Tokyo. 



EYNCHOSPOEA Yahl. (PI. VII.) 



Bynchospora fusca (Linn.) Koem. et Scliult. is not yet found in Japan ; 

 the plant referred to that species by Miquel in his " Prolusio Florse Japo- 

 nicte^' p. 77; is evidently a different species, which should be properly 

 referred to B. Fujiiana Makino, or B. Japonica Makino, mentioned below. 



ANALYTICAL KEY TO THE JAPANESE SPECIES. 



( Style slightly bifid or undivided 2 



[ Style deeply bifid 3 



j Spiculse in a terminal globose head ; seta3 shorter than 

 the achene ; rostrum very short ; achene 2 mm. long 



2 I inch the rostrum; leaves 2mm. wide B. rubra Makino. 



Spiculse in a large panicle ; setae longer than the achene ; 

 rostrum longer than the achene ; achene 10 mm. long 



inch the rostrum; leaves 11 ram. wide ...B. corymbosa Britton. 



Setse smooth 4 



Setse scabrous 5 



Achene oblong-obovate ; spicul£e 1-14-fasciculate B. Fujiiana Makino. 



Achene broadly obovate ; spiculse 1-3-fasciculate B. Miyakeana Makino. 



J Setse antrorsely scabrous 6 



(^ Setse retrorsely scabrous 9 



r Setse exceeding the rostrum; spiculse 7 mm. long B. japonica Makino. 



6 j Setse hwer than the rostrum; spiculse not exceeding 6 mm. 

 [ in length 7 



Achene oblong-obovate; spiculse 5-6 mm. long B. Fujiiana var. scabriseta 



7 i Makino. 



[ Achene oval-obovate; spiculse not exceeding 4^ mm. long.. ..8 



I Spiculse 4-2- mm. long ; rostrum broadly conical ; corymbs 

 g J in the superior part of the culm ....B. glauca Vahl. 



I Spiculse 3-3 J ram. long rostrum angustate-conical ; corymbs 



^ scattered throughout the culm B. Vmemurce Makino. 



g J Setfe 6 10 



|Seta3 0-14 13 



