Deaba. CRUCIFER.E. . • 63 



large as in D. verna. Petals oblong, twice the length of the sepals. Silicles 4-6 lines lon<» ; 

 cells 20 - 30-seeded. ° ' 



Sandy fields on the Island of New-York ; rare. April - May. 



^ 2. Erophila, BC. Petals 2-jpartcd. 



3. Draba verna, Lin7i. Common Whitlow-grass. 



Scapes naked; leaves lanceolate, somewhat toothed ; silicles elliptical. — En"-.hot.t.5QQ- 

 Pursh,fl. 2. p. 433 ; Bigel.fl. Bost. p. 250 ; Bart.fl. A^n. Sept. 3. p. 49 to 88./. 2 ; Torr. 

 4- Gr.Ji. N. Am. l.p. 109. D. verna, (3. Americana, Pers. syn. 2. p. 190. Erophila Ame- 

 ricana and vulgaris, DC. prodr. 1. p. 173. E. vulgaris, Hook. ft. Bor.-Am. 1. p. 56. E. 

 vulgaris, war. Americana, Darlingt.fl. Cest.p. 378. 



Annual. Scapes 1-5 inches high, often several from one root, and assurgent. Leaves 

 4-6 lines long. Flowers minute, white. Petals cleft more than half way to the base. Pe- 

 dicels of the fruit 6-8 lines or more in length. Silicles 3-4 lines long; style very short. 

 Seeds numerous. 



Fields and hill-sides ; common. March and April. Perhaps introduced. 



Tribe V. CAMELINEJE. DC. 



Silicle dehiscent, ovoid or oblong, compressed parallel to the septum, or turgid ; valves plane 

 or convex: septum elliptical or ovate, sometimes incomplete or none. Cotyledons plane, 

 incumbent, contrary to (i. e. their margins looking towards) the septum. 



11. CAMELINA. Crantz ; E?idl. gen. 4919. gold OF PLEASURE. 



[Named from the Greek chamai, dwarf, and limm, flax ; from some resemblance of the plant to ordinary flai,] 

 Silicic obovoid or somewhat globose ; valves ventricose, dehiscing with a part of the style ; 

 cells many-seeded. Style filiform. Seeds oblong, not bordered. Flowers small, yellow. 



1. Camelina sativa, Crantz. Common Gold of Pleasure. Wild Flax. 



Silicles obovoid-pyriform ; style rather long ; stigma simple ; leaves lanceolate, sagittate, 

 nearly entire. — DC. prodr. 1. p. 201 ; Darlingt.fl. Cest. p. 379 ; Torr. tj- Gr.fl. N. Am. 

 l.p. 110. Myagrum sativum, Linn. Alyssum sativum. Smith, Eng. bot. t. 1254. 



Annual. Stem 1^-3 feet high, paniculate at the summit, somewhat pubescent. Leaves 

 usually roughish-pubcsccnt. Silicles about one-fourth of an inch long, on slender pedicels 

 which are from half an inch to an inch in length. 



Fields and cultivated grounds ; introduced with grain from Europe. Flowers in May and 

 June. 



^ 



