Draba.] CRUCIFER^i 



55 



«. caule erecto stricto. — D. incana. Linn. Sp. PL p. 897. ErigL BoL t 388. FL Dan, 

 t 130. Purshj FL Am. v. 2. p. 434. — D. contorta. Ekrh. — De Cand. Prodr. v. \. p. 170. 



$. caule flexupso. 



Hab. a. Labrador. Pursh. Mr. Morrison. Bear Lake and the Mackenzie River. Dr. Ilichardson. 

 /S. North-West coast of America. Mr. Menzies. Islands of St. Lawrence and Unalaschka. Dr. Fischer. — 

 The more usual state of D, incana^ such as we find it iu the north of England and in Scotland, we have only 

 from Labrador and about Bear Lake. The specimens from the N. \V. coast, gathered by Mr. Menzies, will 

 probably prove distinct, both from it and D. confusa; for their habit is very different. I possess tho same 

 plant from the stations above quoted, sent by Dr. Fischer, with the name " D. borealis. DC.?" This hitter 

 is a Kamtschadale plant, communicated by the same liberal Botanist to De CaudoUe, who, however, 

 describes it as having only one leaf upon the stem, whereas the plant in question has several. I have seen 

 no fruit. * t 



20. Z). ardbizans; caule foHoso subramoso subpuberulo, foliis lanccolatls acut'is dcn- 

 tatis, siliculis linearibus glabris pedicello longioribus. — Mich. Am. v. 2. p. 28, Pursh^ FL 

 Am. V. 2. p. 134. 



Hab. Lake Champlain. Michaux. Canada. Pursh ? Goldie ? — What I possess, under this name, gathered 

 in the ueighbouihood of Montreal by Mr. Goldie, is, I think, only D. incana, and I strongly siuspect such 

 to be the plant of Michaux, Pursh seems to have confounded Michaux's D, arabizans with the Alf/ssum 

 dentation of Nuttall, as already noticed, 



21. Z). Unalaschkiana ; caule folioso simplici pubescente, foliis ovato-oblongis integris 

 pubescentibus, siliculis oblongis liirsutulis. — De Cand. Syst VegeL v. 2. p, 350, Prudr. v. 

 1. p. 170. 



Hab. Unalaschka. Dr. Fischer in De Cand. — " Petala calyce duplo longiora, limbo ohovato emar- 

 ginato." DC. 



22. D. aurea; pubescens, caule erecto folioso, foliis lanceolatis ovato-lanceolatisve 

 acutis integris dentatisve, corymbis terminalibus axillaribusque, siliculis oblongo-lanceo- 

 latis pubescentibus pedicello triple longioribus, petalis (flavis) emarginatis, stylo longius- 

 culo. VahL — Fl. Dan. t. 1460. De Cand. Prodr. v. 1. p. 170. HooL in BoL Mag. t 2934. 



Hab. Alpine prairies of the Rocky Mountains, Dnimmond. — Well distinn^iished by its bright conspicu- 

 ous yellow flowers and lateral pedunculated corymbs, springing from several of the upper leaves of the bteiu. 

 One specimen in the collection has white flowers, 



23. D.lvtea; pubescens, caule ramoso folioso, foliis ovalibus caulinis lanceolatis den- 

 tatis, siliculis elliptico-oblongis glabris sub 30-sperniis pedicello sub-triplo brevioribus, 

 (floribus luteis.) — " Gilih. Fl. Lith. in list, del Op. 2. p. 357." Nutt Gen. Am. v. 2. p. 62. 

 De Cand. Prodr. v. I. p. 171. 



^, longipes. DC. — Pedicellis silicula 4-plo longioribus. — D. gracilis. Graham in Edin. 

 PhiLJoum. 1828. p. 172. 



HiVB. Low grounds from lat. ^Q*^ to 66°; Dr. Richardson; Drttmmond; both «. and ^. — It has been 

 correctly observed that this differs from the following^ species only in its gkibrous capsule*. 



24. D. neiiiorcdis ; pubescens, caule ramose, foliis ovalibus caulinis lanceolatis dcntatis, 

 siliculis elliptico-oblongis pubescentibus sub 30-spermis pedicello subtriplo brevioribus. 

 Ekrh. De Cand. Prodr. v. 1. p. 171. — D. muralis, fi. nenjorosa. Limu Sp. PL p. 897. 



