217 
CALAMAGROSTIS. 
About a dozen species of this genus were recognised by Hackel 
as natives of Japan, when he published the “ Enumeratio Graminum 
Japoniae.”* In the year 1910 I addedt seven new species to the 
flora of Japan, and at present po a are known to us. 
So reduced C. hakonensis, Fr. t Sav , ¢. sachalinensis, 
time 
C. achanonen and coat pated it with a specimen collected by 
Mr. Dickins, and named C. oe Although these two plants 
are so alike, yet there are some marked characters by which the 
two species may be easily dusGneaahal rom an examination of 
several specimens, I am led to the conclusion that C. hakonensis 
should be retained as a distinct species 
The chief points of distinction of these two plants are as 
follows :— 
Calamagrostis ee Fr, Schm., Reis. Awe. Sachal, 
p. 202, tab. 8, fig. : 
euse iaeiipuiinas ; “folie in sicco plerumque planis, vagina 
glaberrima, ligula brevi saepe in foliis superioribus brevissima ; 
glumis sterilibus inaequalibus, II™ brevi, glumam fertilem aequanti 
vel longiore, 
Japan. Ganju, Maurie, 13,656 ; Rishiri, Faurie, 8424 ; Rebun, 
Faurie, 8548. Saghalien, Fr. Schmidt. 
Calamagrostis hakonensis, Fr. e¢ Sav., Enum. Pl. Japon. ii, 
168, 
TT nea: praecedenti valde affinis, sed ab ea follis in sicco saepius 
convolutis, basi externe annulo pilorum cinctis, vagina villosula, 
ligula pleiengie: producta, glumis sterilibus aequalibus, carina 
scabra differt. 
Japan. Ad basin Fuji, Dickins, x. 1881; Osorezan, Faurie, 
4599 ; Hakodate, Mazximowicz, 1861; Otaru, Faurie, 1362, 2879, 
et 3088; Mombetsu, Faurie, 1002. 
When describing C. variiglumis, in my paper, I stated that 
my plant differs from C. sachalinensis in certain points, This is 
certainly not quite correct, since I mean C. hakonensis with 
C. sachalinensis. 
When describing my C. nana, I was not able to find out any 
allied species, but last year I found a few specimens at Kew, which 
are so similar to my plant, that I could not draw any specific dis- 
tinction between them. In consequence, my plant is to be regarded 
as follows :— 
Calamagrostis deschampsioides, T'rin., wis Gram. Ic. et Desc. 
iii, sub tab. 354. Ledeb. Fl. Ross. iv, p. 427. 
bes nana, Takeda 
lanta typica foliorum laminis longioribus vaginas excedentibus, 
dite sterilibus moore inaequalibus, arista breviore distinguitur. 
* Hackel, = Bull. Herb. Boiss., vii, 1899. 
Tr ae 6 Bot. t. Mag,, xxiv, No. 277. 
i Hackel, be 650. 
