Barbarea.] CRUCIFER^, 



89 



F 



1. N. officinale; foliis piniiatis, piunis subcordatis repandis, superioribus pinnatifidisj 

 segmentis angustis.— ^r. in Hort Kew, ed. 2. v. 4. p. 110. De Cand. Prodn v. 1. p. 137. 

 Cham, et Schlecht in Linnma^ v, 1. p, 15. — Sisymbrium Nasturtium. lAnn. Sp. PL p, 916. 

 Engl Bot t, 855. Pursh^ Fl, Am. v. 2. p, 440. Elliott, Carol v. 2. p. 145. 



Hab. Island of St. Paul, on the North -West coast of America. Chamisso. Common on the North-West 

 coast, about the mouth of the Columbia. Douglas. Scouler. 



2. N. palustre ; foliis pinnatilobatis auriculis amplexicaulibus ciliatis, lobis conflueutibus 

 dentatis glabris, radice fusiformij petalis calycem aequantibus siliquis utrinque obtusis sub- 

 turgidis. — De Cand. Prodr, v. 1. p, 137. Bich, in Frankl \st Joum, ed, 2, Aj^. p. 25.— 

 N. terrestre. Br. in Hort. Kew, ed, 2, v, 4. p. 110. — Sisymbrium terrestre. Engl. Bot. 

 t. 1747. Pursh, Fl. Am. v. 2. p. 441. Elliott, Carol, v. 2. p, 145. 



Hab. Throug^hout Canada, and to the shores of the Arctic Sea, by the sides of streams, aad in inundated 

 places, North-West coast of America. Br. Richardson. Brummond. De Fucas* Straits and Nootka Sound. 

 Scouler. Bay of Eschscholtz. Chamisso. 



3. N. amphibium ; foliis oblongo-lanceolatis lyrato-pinnatifidis serratigve, radice fibrosa, 

 petalis calyce majoribus, siliculis ellipsoideis stylo raucronatis. — Br. in Hort. Kew. ed. 2, 

 V. 4. p. 110. DeCand. Prodr. v. 1. p. 138. — Sisymbrium amphibium. Linn. Sp. PI. p. 

 SI 7. En^l. Bot. t. 1840. Pur shy Fl. Am. v. 2. p. 440. Bigel FL Bast. ed. 2. p. 253. Elliott, 

 Carol. V. 2. p. 146. 



Hab. In watery places ; Canada. About Montreal. Mr. Cleghom. Lake Huron. I>r. Todd. 



4. N. natans; foliis emersis lanceolatis integris serratis, immersis bi-tripinnatifidis 

 laciniis capillaceis, siliculis obovato-globosis, styli longitudine. — T>t Cand. Prodr. v. 1. 

 p. 139. De Less, Ic. v. 2. t. 15. — Myagrum natans. " Patr. HerhP — Cochlearia natans. 

 Ledeh. in litt. 



Hab. In water; Canada. About Montreal. Cleghom. Goldie. Br, Holmes, (ex Herb. GreviUe.) — Re- 

 markable for its long submerged stems, bearing leaves of which the lower ones are as finely divided as those 

 of Ranunculus aquatilis : the middle leaves are often pinnatifid, with narrow and more or less divided, or 

 deeply serrated segments ; the entirely emerged leaves are lanceolate, undivided, serrated. Pouches rather 

 obovate than ellipsoid, with a slender style equal to them in length. Flowers very pale yellow, almost white. 

 This has been cultivated in the Aquarium of the Edinburgh Botanic Garden by Dr. Graham. 



3. BARBAREA. Br. 



4 



Siliqua tetragono-anceps, valvis apice muticis, concavo-carinatis. Calyx basi eequalls. DC. 



1. B. vulgaris; foliis inferioribus lyratis, lobo terminali subrotundo, superioribus ob- 

 ovatis dentatis pinnatifldisve, siliqua tetragona lineari stylo acuminata. — Br. in Hort. Kew. 

 ed. 2. V. 4. p. 109, De Cand. Prodr. v. 1. p. 140. Cha?n. et. Schlecht. in Linncea, v. 1. p. 

 16. — Erysimum Barbarea, Linn Sp. PL p. 922. EngL Bot. t. 443. 



Hab. Island of Unalaschka. Chamisso, Mouth of the Columbia. Douglas. Scmdrr^iiie upper loaves 

 are liable to vary; and the best character between this and the following species is to be foimd in the pods, 

 which here are scarcely more than inch long, tetragonal, tapering into a slender style about two inches long. 



2, B. precox ; foliis inferioribus lyratis, lobo terminali obovato, superioribus pinnati- 

 fidis, lobis lineari-oblongis, siliqua lineari-elongata compressa ancipiti, stylo perbrevi in- 

 crassato.— J5r. in Hort. Kew. ed, 2. v. 4. p. 109. De Cand. Prodr. v. 1. p. 140. Rich, in 



