232 TAKEDA—SOME NEW PLANTS FROM JAPANESE MOUNTAINS. 
Oxytropis japonica, Maxim. 
Phyllodoce aleutica, Makino, ibid., 1905, p. 134. 
P. nipponica, Makino. 
Potentilla Matsumurae, Th. Wolf. 
Saussurea kai-montana, Takeda, forma minor, Takeda. 
Saxifraga bronchialis, Linn., var. cherlerioides, Eng). 
Toficldia Okuboi, Makino. 
It may be of some interest to mention here, 4 propos, that 
in Japan the same species of plants are very frequently found on 
mountains of different rocks quite irrespective of chemical nature 
of soil. Their distribution seems to me largely to depend on the 
physical conditions of the locality. For example, Dryas octopetala 
grows on mountains of palaeozoic rock, of granite, or of andesite. 
I may also mention here that most of the plants found on 
the high mountains of Honté, or the main island of Japan, 
are of arctic character, and they are distributed over Yezo 
and the Kuriles, and some are also in Sakhalien. But, on the 
whole, the alpine flora of Central and Northern Japan has more 
intimate relationship to that of the Kuriles than that of Sakha- 
lien. This fact probably indicates that La Pérouse Strait was 
formed earlier than Tsugaru Strait. It was first put forward 
by Blakiston * that Tsugaru Strait forms a decided line of 
demarcation of the faunas of Honté and Yezo. It appears to 
me, however, that, botanically speaking, La Pérouse Strait is the 
primary, and Tsugaru Strait the secondary line of demarcation.t 
Aconitum yuparense, Takeda (figs. 1-4). 
Tuber napiforme, fuscum. Caulis elatus, bipedalis, rectus, 
superne flexuosus et pilis albis crispulis hirsutus. Folva inferiora 
longe-petiolata, superiora brevi-petiolata, petiolo ciliato, omnia 
5-palmati-partita, basi cordata, margine ciliata, lobis late ovalibus 
ternato-trifidis, laciniis plus minus divergentibus, lanceolatis 
linearilanceolatisve, media et superiora aperte cordata, suprema 
minus laciniata, utrinque ad nervos pilis albis pubescentia. 
Inflorescentia racemosa, racemis terminalibus et axillaribus. 
Racemus abbreviatus, densus, subcorymbiformis, 4—5-florus, 
rectiusculus. Pedunculi erecti, 1.5-2.5 cm. longi, pube alba 
hirti; bracteae superiores palmati-partitae, majusculae pedun- 
culo longiores ; bracteolae infra medium suboppositae, lanceo- 
latae. Flores magni, 4.5 cm. longi, teneri, extus tenuiter 
pubescentes, intense violacei; galea ampliato-fornicata, 3 cm. 
longa, dorso subaequaliter parabolica, antice breviter rostrata ; 
* Blakiston, Zoological erage oe of Ancient Connection of the Japan Islands 
with the Continent, in Trans. As. S ee xi (1833), pp- 126-140. 
+ Cf. Takeda, The Flora of the Island of Shikotan, in Journ. Linn. Soc., xlii 
(1914): in particular, pp. 445-446. 
