110 CRUCIFER^. Cameuna. 



Shores of the Arctic Sea! — Root fibrous, thickened at the neck, and 

 throwing up several short simple or branching stems. Leaves glabrous. Ra- 

 cemes short and crowded. Silicle apiculate with a very short style. Seeds 

 about 8 in each cell. 



4. C q^ciiialis (hinn.) : silicles globose-ovate, half as long as the pedi- 

 cels ; radical leaves petioled, cordate ; cauline ones ovate, toothed or angled. 

 DC.—Eng. bot. t. 551 ; DC. prodr. 1. p. 173 ; Hook. Jl. Bor.-Am. l.p. 57. 



Arctic America, ex Hook. — A native also of Europe. 



5. C. Danica (Linn.) : silicles elliptical [or subglobose] as long as the 

 pedicels ; leaves aU petioled, deltoid. DC. — Eng. hot. t. 696 ; DC. prodr. 

 1. p. 173; Hook.ji. Bor.-Am. l.p. 57. 



Arctic America, ex Hook. — A native also of the northern parts of Eu- 

 rope. 



6. C. tridactylites (DC.) : silicles globose-ovate ; cauline leaves with a 

 single tooth on each side (as if 3-lobed). DC. syst. 2. p. 367. 



Labrador, Herb. Banks, (according to DC.) 



7. C. Grcp.nlandica (Linn.) : silicles ovate, as long as the pedicels ; radi- 

 cal leaves petioled, reniform, entire ; cauline ones few or none. DC. pi^odr. 

 1, p. 173. 



Greenland. — A native also of Norway and Iceland. 



8. C spaZ/mZaia (Schlecht.) ; stellately pubescent; silicles globose-ellip- 

 tical ; leaves spatulate, coarsely toothed, acute, veined. Hook. — Schlecht. in 

 herb. Willd. ex DC. syst. 2. p. 369; Hook.ji. Bor.-Am. 1. p. 57. C. 

 septentrionalis, DC. prodr. 1. t. 174. Draba grandis, Langsdorff ; DC. 

 syst. 2. p. 355 ; Deless. ic. 2. t. 47. 



Aleutian Islands, lat. 56^-57. — Septum fenestrate. DC. 



9. C. siliquosa (Schlecht.) : silicles oblong-lanceolate, apiculate with the 

 style, half as long as the pedicels ; leaves oblong, entire, attenuate at the 

 base, pubescent. Schlecht. 171 herb. Willd. ex DC. syst. 2. p. 369 ; Hook. 

 Jl. Bor.-Am. 1. p. 57. 



Rocky places in Unalaschka. — Flowers in dried specimens yellowish. DC. 

 — Nearly related to the preceding. Chamisso. 



Tribe VI. CAMELINEyE. DC. 



Silicle dehiscent, ovate or oblong, compressed parallel to the sep- 

 tum, or turgid ; valves plane or convex: septum elliptical or ovate, 

 sometimes incomplete or none. Cotyledons plane, incumbent, con- 

 trary to (i. e. their margins looking towards) the septum. 



25. CAMELINA. Crantz ; DC. syst. 2. p. 514. 



Silicle obovate or somewhat globose ; valves ventricose, dehiscing with 

 a part of the style; cells many-seeded. Style filiform. Seeds oblong, not 

 bordered. 



1. C. sativa (Crantz) : silicles obovate-pyriform ; style rather long; stig- 

 ma simple; leaves lanceolate, sagittate, nearly entire. — DC. prodr. l.p. 201; 

 Darlingt. fl. Cest. p. 379. Myagrum sativum, Limi. Alyssum sativum, 

 Smith, lEng. bot. t. 1254. ' 



Fields and cultivated grounds ! May- June. Introduced. — (J) Stem li-3 

 feet high, paniculate at the summit. Leaves usually roughish-pubescent. 

 Flowers small, yellow. 



