Sisymbrium.] CRUCIFER^. 



61 



connata. CaL basi ^qualis. Semina ovata aut oblonga, Cotyledones planse, incum- 

 bentes, interdum obliquse. Stam. edentula. DC. 



* Norta. SiUqnm teretes. Calyx patens. Semina ohlonga. Mores flavL Racemi 



ehracteati. DC, 



1. S. junceum; foliis glabris glaucis, inferioribus petiolatis ruiicinato-pinnatifidis, 

 superioribus Jineari-lanceolatis integris. DC.—Bieh. FL Taur. Cane. v. 2. p. 114. De 

 Cand. Frodr. v. 1. p. 191, Cham, et Schkcht m Limmay v.\. p. 28. 



Hab. At Priest*s Rapid on the Columbia, among dry stones; rare. Douglas. 



* * Velarum, Siligim suhidifonnes basi latiores, apice in stijlum brevissimum desinentes, 

 pedicello brevissimo post anthesin incrassato secus axin adpresscB. Flares JlavL DC. 



2. S. officinale; foliis runcinatis pilosis, caule piloso, siliquis radii appressis subulatis. 

 DC.—'' Scop. Cam. ed. 2. «. 824." Br. in Hort. Kew. ed. 2. v. 4. p. 111. De Cand. Prodr. 

 V. I. p. 191. — Erysimum officinale. Linn. Sp. PL p. 922. Pursh^ FL Am. v. 2. p. 436. 

 FngL Pot. t. 735. Elliott, CaroL v. 2. p. 148. 



Hab. Canada. PursJi. Mouth of the Columbia. Scolder. 



I 



# # # 



Irio. Siliqum teretes. Semina ovata, suhtriquetra. Floresflavi. DC. 



3. S. curvisiliqua; erectum ramosumj foliis lanceolatis pinnatifidis acutis glabris basi sub- 

 amplexicaulibus, segmentis lineari-Ianceolatis patentibus, snmmis subintegris, raceme 

 fructifero elongato, siliquis linearibus curvatis acuminatis, pedicello duplo longioribus. 



Jiadix parva, annua. Caulis crectus, vix pedalls, superne prsecipue, ramosus, sub lente, piiis miuu- 

 tissiraisj sparsis scabriusculus. Folia 2, 3 uncias long^a, lanceolata, acuta, glabra, pinnatiiida, basi plerumque 

 auriculata, semiamplexicaulia, laciniis patentibus, lineari-Ianceolatis, acutis, integris; inferiora subpectinato- 

 piunatifida, superioia minora, basi subsagittata, reli<jua subiutegra, Flores parvi, corjTnbosi, fiavi. Cali/x 

 patens. Corolla calyce longior. SiliqucB longe racemosaj, teretes, in stylo brevi acuminatae, liiieares, i'al- 

 catie, subunciam longre, snbtorulosse. Valvoi laeves, glabne. Semina biserialia, 



Hab, Common on the North-West coast of America, lat 47^, 48^, in sandy soils) near streams. Douglas. 



This species belongs to De Candolle*s 2d division of his section Ibio, but that includes no one to whicli 



it can be referred. Its nearest ally is perhaps the S. sinuatum of NuttalVs MSS. (from the Arkansa,) ii hich 

 I possess from that gentleman, but without fruit. The leaves of it are in many respects similar to those of 

 our plant, but the segments are more numerous and shorter, and the flowers are considerably longer. 



+ 



4. S. sophioides; foliis bipinnatifidis, lobis ovatis lanceolatisve incisis, pedicellis (petalis- 

 que) calyce subbrevioribus, floribus siliquisque lineari-filiformibus falcatis umbellato™ 

 corymbosis. (Tab. XX.) — Fischer, MSS. — S. Sophia. Cham, et Schkcht. inLinna^a, v. 1, 

 p^ 28. — S. Sophia, var. ? Pich. in Frankl. 1st Joum. ed. 2. App. p. 27. 



Radix crassiuscula, descendens^ annua. Caulis solitarius, pedaUs ad bipedalem, erectus, flexuosus, 

 ramosus, striatus, subnitidus, ut et folia juuiora gland uloso-pubescens. Folia plurima radicalia, pinnatifida, 

 fere pinnata, pinnis iterum pinnatifidis ovatis lanceolatisque, ywiioz-a glanduloso-pubescentia, adulta glabra, 

 suprema segmentis angustioribus. Flores in corymbis umbellatis, pedunculatis, subaphyUis, tcrmiuahbus 

 axillaribusque. RacJiis semper glanduloso-pubescens. Flores parvi, densi, intense flavi. Pedicelli breves, 

 gi-aciles, plerumque glaborrimi. Calyx sepalis ovalibus, glabris, obtusis. Pelala calyce vix pauluhim brevi- 

 ora obovato-lanceolata. AnthercB subglobosie. Siliqua numcrosw, dens» et ita compacta?, ut fere exacte in 

 umbellam disposita videantur, non raro secundre, biunciales et ultra, pedicello triplo loug^iores, paululum 

 falcate, anguste lineares, teretes; stylo brevissimos, stigmateque parvo capitato, terminatae. Valv(B dorso 



