CocMearia,] CRUCIFER^. 



57 



2. C.anglica; siliculis elliptico-globosis venoso-reticulatis pedicello dimidio breviori- 

 bus, foliis radicalibus petiolatis ovatis integris, caulinis oblongis. DC, — Zm?i. Sp, PL p, 

 903. UngL Bot t 552. De Cand. Frodr, v. 1. p. 364. 



Hab. Shores of the Arctic Sea and islands adjacent, from east to west; Observatory Inlet. Dr. 

 Scoulcr. — It is often difficult, especially in a drieA state, to distinguish this from C. officinalis; nor 

 do I think that the two species are generally Avell understood by Botanists. If the Engl. Bot. fig., t. 

 552, be the true C anglica, our most frequent Arctic species is certainly that plant. The siliculce are 

 broadly elliptical, the reticulations more or less apparent, the dissepiment sometimes fenestrate, as I find it 

 to be in British individuals. 



3. C. fenestrata ; siliculis ellipticis ovalibusve, valvls subavenlis, dissepimcnto elliptico- 

 lanceolato, axi saepius fenestrate, foliis radicalibus cordatis iiitcgcrriniis, caulinis spathulato- 

 oblongis subdentatis. — Brown in Ross's Voy. ed. 2. v, 2. />. 103, et in Parry's \st Voy, Jpp, 

 p. cclxvi. De Cand. Frodr. v. L p, 173. 



Hab. Shores of the Arctic Sea; Capts. Ross and Sir E, Parry ; and it is probably in the other collec- 

 tions ; but I confess that I cannot satisfactorily distinguish it from C. anglica. 



4. C, officinalis ; siliculis ovato-globosis pedicello dimidio brevioribus, foliis radicalibus 

 petiolatis cordatis, caulinis ovatis dentato-angulatis. DC. — Linn. Sp. PL p. 903. EngL 

 Bot t. 551. 



Hab. Arctic shores. Whale Fish Islands? Copt. Sir E. Parry. Coast to the westward of Mackenzie 

 River. Capt. Sir John Franklin and Capf. Bach — One specimen in each of the above-mentioned voyagers' 

 collections, seems to me to correspond in foliage with our Europsean C. officinalis, taking the English 

 Botany figure as the type of the species ; but neither is in fruit. 



5. C danica ; siliculis ellipsoideis pedicelli longitudine, foliis omnibus petiolatis deltoi- 

 deis. DC. — Linn. Sp. PL p. 903. EngL Bot t 100. Cham, et Schlecht. in LimuBa, v. 1. 

 p, 26. 



Hab. Arctic shores. North Somerset. Capt. Sir E, Parry. Westward of the Mackenzie River. 

 Capt. Sir Mm Franklin and Capt. Back. 



6. C. tridactylites ; siliculis ovato-globosis, foliis caulinis dente unico utrinque grosse 

 subtrilobatis. DC, — Banks' Herb. — De Cand. Syst, v, 1. p. 174. 



Hab, Labrador; Herb. Banks.; according to De Candolle. 



7. C, spathulata; stellatim pubescens, siliculis ellipsoideo-globosis, foliis spatimlatis 

 grosse dentatis acutis venosis. — Schlecht, pat. in Herb. Willd. — De Cand, Prodr. v. I. p. 174. 

 Cham, et Schlecht. in Linnma, v. 1, p. 27.— C. septentrionalis. De Cand. Prodr. v, 1. p. 

 174. (" excl, syn. Schlecht. pat. in Herb. JF/M")— Draba grandis. Langsdorffi, MSS. — De 

 Cand, SysL v, 2. p, 355. De Less. Ic. v, 2. f. 47, 



Hab. Aleutian Islands of St. George and St. Paul, lat. 56<^, 57°. Chamisso,—Of this interesting plant I 

 possess beautiful specimens, both from Dr. Fischer and from Chamisso. The latter considers it as the only 

 plant peculiar to the islands just mentioned, and has published an excellent description of it in the Linnaa 

 above quoted. In a dried state, the large siliculoi are generally pressed flat, whence arose the mistake of 

 considerintr it a Draba. In habit and pubescence it is far removed from the preceding Cochlearia. 



8. C.siliquosa; siliculis oblongo-lanceolatis stylo apiculatis pedicello dimidio breviori- 



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