450 
APPENDIX NO. XVIII. 
following. Scapes short, naked, almost glabrous, as well as the silicles. 
Flowers apparently white and quite corymbose. Style rather long; 
stigma emarginate. Perhaps var. d. Hook., or D. corymbosa , R. Br. 
in Ross’s Voy., but scarcely to be separated from alp in a. 
Bedevilled Reach, 78°. 
Yar. micropetala. Leaves larger than the preceding varieties, and 
retaining a lively green color in the dry state, ciliate, but scarcely hispid 
on the surface. Scape short, naked, pilose, as well as the calyx. Just 
blooming; flowers white, small, thickly corymbose, and almost capitate. 
Perhaps D. micropetala , Hook, in Parry’s 2d voy. app. p. 385. Torr. 
and Gr. 1, p. 104, but scarcely any thing more than another form of 
D. alpina. 
North Proven, 72°, and Rensselaer Harbor, 79°. 
........ Another variety in tho fruiting state, with scape 
naked, 3 i inches high; silicles corymbose, oval, much larger than in the 
other varieties, and conspicuously veined, very hairy, as well as the 
scape and pedicles. Style short, with a blunt stigma. 
Rensselaer Harbor, 79°, August 27. 
11. D.. GLACiALis, p. Hook. FI. Bor. Am. 1,. p. 51. Scapes and 
pedicles pubescent; silicles glabrous, with the habits of var. e. 
Disco and below Bedevilled Reach, 70° and 78°. 
12. D. rupestris, a. R. Br. in Hort. Kew. 3, p. 91. D. C. Prodr. 1, 
p. 1G9. D . hirta, Engl. Bot. T. 1338. D. hirta , var. 4, Hook, in 
Parry’s 2d voy. app. p. 386. Pubescent; scapes naked, or with a 3- 
cleft leaf about the middle. 
Rensselaer Harbor, 79°, August 27. 
13. D. nivalis, Willd. D. rupestris , ft. Torr. and Gr. 1, p. 105. 
Leaves rosulate, scarcely linear-oblong, but otherwise according with 
Willdenow’s description. Scapes 6-7 inches high, hirsute, with a 
small leaf below the middle. Silicles glabrous. 
14. D. lapponica? Willd. D. C. Prodr. 1, p. 169. R. Br. in Parry’s 
1st voy. app. p. 266. JD. hirta , var. 3, in Parry’s 2d voy. Torr. and 
Gr. 1, p. 105. Specimens in the fruiting state; scape naked, almost 
glabrous, as well as the lanceolate entire leaves. 
Disco Island, 70°. 
15. D. hirta, Linn. Scape and silicles puberulent-pilose. Radical 
leaves entire, oval-lanceolate; those of the scape toothed. Flowers 
rather large, white, racemose; silicles oval-oblong; style scarcely any. 
Upernavik, 73°. 
16. D. incana, var. confusa , Torr. and Gr. 1, p. 107. D. incana , 
var. Linn. D. confusa, Ehrh. in D. C. Prodr. 1, p. 170. 
i 
