Draba. CRUCIFERiE. 63 



large as in D. vcrna. Petals oblong, twice llic length of the sepals. Silicles 4-6 lines long ; 

 cells 20 - 30-scedcd. 



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



§ 2. EROPniLA, DC. Petals 2-parted. 



3. Draba verna, Lin?i. Common Whitlow-grass. 



Scapes naked ; leaves lanceolate, somewhat toothed ; silicles elliptical. — Eng. hot. t. 586 ; 

 Pursh,Jl. 2. p. 433 ; Bigel.Jl. Bost. p. 250 ; Burt.Jl. A?n. Sept. 3. p. 49 to 88./. 2 ; Torr. 

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

 ricana awfZ vulgaris, DC. prodr. 1. p. 173. E. vulgaris, Hook. Jl. Bor.-Am. 1. p. 56. E. 

 vulgaris, var. Americana, Darlingt. Ji. Cest.ji. 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. 



Silicic 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 ; Endl. gen. 4:919. gold OF pleasure. 



[Named from the Greek cliamai, dwarf, ami linon, flax ; from some resemblance of tlic plant to ordinary flax.] 



Sihcle obovoid or somewhat globose ; valves vcntricose, 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. Jl. Cest. p. 379 ; Torr. ^ Gr.Jl. N. Am. 

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



Annual. Stem I5 - 3 feet high, paniculate at the summit, somewhat pubescent. Leaves 

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

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



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

 June. 



