FLORA OF THE ISLAND OF SHIKOTAN. 457 
12. ACERACE AL. 
24. ACER. 
49. A. PrcTUM, Thunb., var. Mono, Maxim. in Mél. Biol. x. p. 600 ; 
Miyabe, in Mem. Boston Soc. Nat. Hist. iv. (1890) p. 223. 
Syn.: A. Mono, Maxim. Prim. Fl. Amur. p. 68. 
Hab. Shakotan, between Matakotan and Anama, ete. 
Obs. My specimens agree very well with the original specimens of A. Mono 
from Amur, collected by Maximowiez. A. pictum possesses a strong tendency 
to variation with regard to hairiness and shape of the leaf, as well as of the 
fruit. In the neighbourhood of Satporo, Yezo, where various forms of this 
species are growing wild, a field botanist would be surprised at the striking 
features exhibited by them. Towards the end of April or at the beginning 
of May, when the fresh leaves are unfolding, the foliage of some trees is 
greenish-yellow in colour, and of others reddish-yellow. The leaf of the tree 
with foliage of the former colour is usually cordate at the base, and the trunk 
has dark coloured bark. The other form has leaves somewhat truncate at 
the base, and whitish bark. So far as I have observed, the male flower of the 
yellowish-leaved form is larger than that of the other, having stamens as long 
as the sepals, whilst in the reddish-leaved form the stamens are shorter than 
the sepals. A closely allied species, or possibly a subspecies, A. Mayrit, 
Takeda, Beitr. no. 95, comes nearer to the reddish-leaved form so far as the 
leaf and bark are concerned, but resembles the other form in floral structure. 
A careful comparative study of all the members of this group would be 
interesting, and is much desired. 
13. ANACARDIACE. 
35. Rnuus. 
50. R. ToxicobENDRON, Linn., var. RADICANS, Torr. Fl. U. S. p. 224; 
Franch. ct Sav. Enum. Pl. Jap. i. p. 93; Miyabe, l c. p. 224. 
Hab. Shakotan ; in woods. 
14. LEGUMINOS/E. 
(Gen. 8, spp. 10.) 
36. (1.) THERMOPSIS. 
51. T. FABACEA, DC. Prodr. ii. p. 99; Miyabe, l. c. p. 224. 
Hab. Shakotan, Anama ; or the shore. 
Obs. The specimens referred to in Hemsl. Index Fl. Sinensis, are not this 
species, but T. chinensis, Benth.. 
