44 



CRUCIFER^ 



[ Cardamtne. 



* foliis omnibus indivisis. 



1. C. rotundifolia ; pubescenti-hirsuta demum glabra, caule erecto flexuoso, foliis sub- 

 carnosis angulato-dentatis, radicalibus longe petiolatis rotundato-cordatis, sinu angiisto, 

 caulinis ovatis, inferioribus petiolatis superioribus sessilibus, radice fibroso-tuberosa. 

 Mich, Fl. Am, v. 2. p. 30, Pursh, Fl, Am. v. 2, p. 439. De Cand. Prodr. v. 1. p, 149. 

 Arabis rhomboidea. Pers. Syn, PL v, 2. p. 204, — Cardamine rhomboidea. De Cand, 

 Prodr, V, 1. p. 149. — Arabis tuberosa. Pers. Syn, PL v. 2. p. 204. {Jide De Cmid.) 



Hab. Rocky Mountains, between lat. 52° and 57°, and thence to Hudson*s Bay, in the same latitude. 



Drummond. My Talued friend Dr. Boott has ascertained that the Arabis rhontboidea of Pers. is the same 



as the Cardamine rotundifolia of Mich. ; a much more appropriate name. Our plant differs somewhat from 

 the United States specimens, in having fewer leaves on the lower part of the stem, in the upper leaves being: 

 somewhat broader, and in the pubescence of the foliage, and especially of the stems; but these characters 

 depend perhaps upon age and situation. The flowers, too, are large, the petals rose-coloured. The shape of 

 these petals in both is nearly cuneate. 



2. C hellidifolia ; foliis glabris erectiusculis crassiuscuHs, radicalibus petiolatis ovatis 

 integris, caulinis paucis integris aut subtrilobis, siliquis erectis, stigmate subsessili. — Linn. 

 Sp. PL p. 913. De Cand. Prodr. v. 1. p. 150. EnyL Bot. t 2355. Rich, in Franhl. \st 

 Journ. ed. 2. App. p. 26. Cham, et Schlecht in lAnnma^ v. 1. p. 19. 



Hab. Summits of the Rocky Mountains, lat. 52°. Drummond, Throughout Arctic America, sparingly. 

 J)r, Ilichardson, Captain Sir John Franklin, Captain Back, Captain Sir E. Parry. Islands of Una- 

 laschka and St. Lawrence. Chamisso. — Varying much in the length of the peduncles, sometimes shorter 

 than the leaves, sometimes twice as long. Very nearly allied to this, if not the same, is C. lenensis, Andrz. 

 sent me by Professor Ledebour, 



* * foliis ternatis pinnatisve. 



3. C. purpurea; glabriuscula, foliis radicalibus caulinoque trifoliolatis quinatisve foliolis 

 lateralibus ovali-rotundatis acutis, terminali cordato-rotundato 3-dentat05 bractea ad basin 

 pedicello inferiori cuneato tridentato sessili, petalis (Isete purpureis) reticulatim venosis. 

 Cham, et Schlecht. in Linncea^ v. 1 . p. 20. 



Madix repens, gracilis, fibrosa. Folia, (ut et caulis erectus, digitalis,) hie illic parce pilosa, radicalia 

 plurima, caulinum unicura, omnia sublonge petiolata, trifoiiolata vel rarius quinata; foliolis laterab'bus oppo- 

 sitis vel altemis, subdecurrentibus, ovali-rotundatis, acutis, terminali cordato-rotundato, tridentato, vel sub- 

 trilobo, dentibus acutis. Flores in racemo laxo, subdecem. Petioli 5^Q lineas longi, patentes, glaberrimi, 

 inferiora bractea foliacea, sessili, cuneata, tridentata instructa. Calyx glaber, sepalis erecto-patentibus 

 oblongis, glaberrimis. Petala late obovata, unguiculata, intense purpureo-rosea, pulcherrime (sub lente) 

 reticulatim venosa, sepalis duplo triplove longiora. 



Hab. Islands of St. Lawrence. Chamisso, Cape Lisburne, at the northern entrance of Kotzebue's 

 Sound. Lay and Collie in Captain Beechei/s Collection. — Only one specimen of this very beautiful Carda- 

 mine exists in our collection. It is distinguished at once by the 3 (5 in Chamisso's plant) roundish leaflets 

 of each leaf, and the deep purple-coloured and reticulated petals, in which latter particulars I know of no 

 species that comes near it. 



4. C. angulata; foliis omnibus petiolatis ternatis rarius quinato-pinnatis, radicalium 

 subrotundis, caulinorum ovatis lanceolatlsve angulato vel inciso-lobatis glabris. — Hook, in 

 Bot. Misc. V. \. p. 343. t 69. 



Radix longe repens, fibrosa, perennis. Caulis erectus, simplest, pedalis ad sesquipedalem, herbaceus, glaber. 



