Draba. CRUCIFERiE. 105 



Labrador and Arctic America.— Not well distinguished from D. nivalis 

 and D. hirta. Hook. 



9. D. oblongata CR. Brown) : scapes naked, somewhat floccosely hirsute ; 

 leaves cajspitose, oblong-linear, entire, ciliate and velvety ; sihcles oblong- 

 elliptical, velvety. DC.—R. Br. in Ross's toy. app. (without descr.) ; DC. 

 prodr. 1. p. 168; Hook. Jl. Bor.-Am. 1. p. 52. D. hirta, var. 2. Hook, in 

 Pamfs voy. 



Shores of Arctic America.— Flowers unknown : style very short. 



10. D. corymbosa (R. Brown): scape naked, minutely hispid; leaves 

 densely caespitose, oblong, attenuate at the base, ciliate and somewhat hispid ; 

 silicles elliptical, corymbose, minutely hispid. DC. — li. Br. I. c. ; DC. 

 prodr. \.p. 169; Hook.ji. Bor.-Am. l.p.52. 



Shores of Arctic America.— Very near D. oblongata and D. rupcstris. 

 /?. Brown. 



11. D. hirta (Linn.): scape puberulent, often bearing one or two toothed 

 leaves ; radical leaves oblong, mostly entire, minutely pubescent; silicles ob- 

 lonof, and. with the pedicels, glabrous ; style almost none (flowers white). 

 DC.— Wahl.f. Lapp. p. lib. t. 11./. 3; DC. prodr. l.p. 169; Hook. Jl. 

 Bor.-Am. l.p. 52. 



J. siliquosa: silicles 9 lines long. Hook. I. c. 



t. leaves almost glabrous ; scape entirely glabrous. Hook. ! I. c. 



Arctic and Subarctic America! Rocky Mountains; Kotzebue's Sound.— 

 A variable plant, appearing to pass into D. rupestris on the one hand, and 

 into D. incana on the other. Hook. 



12. D. rupestris (R. Brown) : scape naked, or with a single leaf, pubes- 

 cent ; leaves oblong-spatulate, ciliate and somewhat hirsute ; silicles oblong, 

 pubescent or glabrous ; stvle very short ; stigma emarginate (flowers white). 

 Hook.! jl. Bor.-Am. l.p.' 53. 



a. silicles pubescent. Hook. ! I. c— D. rupestris, R. Br. in hort. Kexo. 3. 

 p. 91 ; DC. prodr. 1. p. 169. D. hirta, Eng. bot. t. 1338. D. hirta, var. 4. 

 Hook, in Parry'' s 2nd voy. app. p. 386. 



/?. silicles 2:labrous. Hook. '. I. c. 



Rocky Mountains, lat. 52^-57°.- Not well distinguished from D. hirta. 

 The var. p. Hooker supposes to be identical with D. nivalis, Willd. If so, 

 as is not improbable, that name being the older by several years, must be 

 adopted instead of the one here employed. 



13. D. Lapponica (Willd.): scapes naked, glabrous; leaves lanceolate, 

 entire, ■•■-'• " ' ' i . -_j / .. 



brous. 

 Hook. ^ 



androsacea, Wahl. jl. Lapp. p. 174. t. 11./. 5. 

 Melville Island 1 — Flowers white. 



14. D. stellata (Jacq.) : scape with a single leaf, pubescent ; leaves oblong- 

 oval, tomentose with a short stellate pubescence ; pedicels puberdent ; si- 

 liques oblong. DC— '' Jacq. hort. Vindob. p. 113, Obs. n. 5i.t. i.f. 3." ; 

 DC. prodr. l.p. 169; Deless. ic. 2. t. 46./. B; Hook. Jl. Bor.-Am. l.p. 53. 

 D. hirta, Jacq. 



0. hebecarpa: silicles entirely clothed with a velvety pubescence. DC. 

 I. c. ; Hook. l. c. 



Unalaschka and Kotzebue's Sound. 0. Arctic America !— Lower leaves 

 lanceolate-obovate, ciliate. Flowers white. 



15. D. Icevipes (DC.) : scapes naked or with a single leaf, pubescent ; 

 leaves ovate, tomentose with a short woolly pubescence ; silicles long and 



14 



