218 



"(Leucodraba) caulibus ramosis foliosis cum pedunculis foliisque pube stellata et pilis 

 simplicibus incanis, foliis oblongis ovatisve acutis dentatis, petalis oblongis calyce pu- 

 bescente duplo majoribus, siliculis ovato-oblongis rectis pedicellos adsequantibus pube 

 stellata incanis calyce persistente stipatis, stylo brevissimo. 



"Calyce persistente et siliculis rectis brevioribus a proxima D. confusa, Ehrh. {D. in- 

 cana, L.) distinguitur." 



24. Draba borealis, DC. Syst. n,p. 342. — Yar. kurilensis, F. Schra. Fl. Sach. p. 114; Max. 



Mel. Biol, ix, p. 609; Fi\ & Sav. Enum. n, p. 282. Odontocyclus kurilensis, 

 Turcz. in Bull. Mosc. 1840, p. 65; Ledeb. FI. Ross, i, p. 756. 



Hob. Kurile Islands! {ex Turcz., Max., etc J Etorofu, on moist cliffs at Tsurubetsu. 

 Shikotan, on rocky cliffs. 



My Shikotan specimens correspond exactly with the Hakodate specimens in every char- 

 acter. The Etorofu plant, on account of its moist habitat, is taller and weaker, but coin- 

 cides perfectly with the plant under consideration in all its essential characters. Its 

 flowering stalk is about 28 cm. long and ascending; generally about eight cauline leaves 

 are distantly arranged quite well up to the inflorescence, and they are beset with bifur- 

 cate or stellate hairs; the upper leaves are ovate, sessile, obtuse or subacute; the lower, 

 obovate, obtuse and tapering to the petiole. The petals are about twice as long as the 

 sepals. The fruits are immature, smooth (very young ones slightly hairy), more or less 

 twisted, aud thickened here and there along the margin with callous spots; the styles are 

 thick and short. 



Kegel & Tiling in their Florula Ajanensis, p. 59, describe a variety of Draba borealis 

 from the Kurile Islands under the name of var. folios a, with D. unalaschkiana, DC, as a 

 synonym. Prof. Maximo wicz kindly informs me that the variety was "founded on one 

 bad specimen, which looks different enough, but indeed nearer to D. unalaschkiana." In 

 the Gray Herbarium, I have found a flowering specimen of a Draba from Urup sent by 

 "Grisebach or Bunge," under the name of D. unalaschkiana. Compared with our plant, 

 it has larger flowers, and hairy sepals; and some of its cauline leaves are conspicuously 

 few-dentate, the teeth spreading. It corresponds very well with the specimens from 

 Alaska, the Aleutian Islands and northern British Columbia, having contorted pubescent 

 pods. For the present, in the absence of good specimens from the Kurile Islands, it is 

 hard to decide, whether the var. foliosa, Reg. & Til., and D. unalaschkiana, DC, are 

 really the same plant or not. D. hirsuta, Turcz., may most likely come also under the 

 same species. 



Our present variety has been found in Yezo, Saghalin, and the Kurile Islands. The 

 species has its range of distribution in northeastern Asia and northwestern America. 



25. Draba gelida, Turcz. Cat. PI. Baic.-Dah. n. 131, Fl. Baic.-Dah. i, p. 132. D. Wah- 



lenbergii, var. gelida, Reg. PI. Radd. i, p. 189. 

 Hab. Kurile Islands {fide Turcz.). 



Distrib. Alpine and subalpine districts of Dahuria, and the Altai and Baikal regions. 



26. Tetrapoma barbaraefolium, Turcz. Fl. Baic.-Dah. I, p. 147; Ledeb. Fl. Ross. I, p. 



161. Camelina barbarewfolia, DC. Prodr. i, p. 201; Hook. Fl. Bor.-Am. i, p. 

 201. 



