OKDEU 11. CRUCIFEliJE. 41 



valves ; funiculus adhering to tlie dissepiment ( o ). European. Leaves 

 cordate. Flowers lilac. 



1 JL. BEDivivA L. Perennial Safin-flower. Lvs. ovate, petiolate, mucronately serrate ; 



silicles lanceolate, narrowed at each end. y. 2 3f. June. 



2 Li. BIENNIS DC. Honesty. Lvs. with obtuse teeth ; silicles oval, obtuse at both ends. 



Flowers large, purple. May, June. 



18. DRABA, L. WHITLOW GRASS. (Jpdfi?t, acrid, biting ; from the 

 taste of the plant.) Calyx equal at base. Pet. equal. Fil. without teeth. 

 Silicic oyal or oblong, entire, the valves flat or slightly convex, veined. 

 Seeds not margined, 2-rowecl in each cell (=c). Flowers white, rarely 

 yellow. Plants small. 



EKOPHILA. Petals 2-parted No. 1 



DTZARA projwr. Petals entire or only emarginate. (a) 



a Style distinct, long or short. Pods twisted when ripe. Pcrenn . .N*?. 2, 3, 4 

 a Style none. Pods straight, plane. Plants annual or bienn. (b) 



b Pedicels as long as or !onger than the pods k . . .Nos. 5, 6 



b Pedicels shorter than the pods Nos. 7, 8 



1 JD. (Erophila) verna L. Whitlow Grass. Scape naked ; Ivs. oblong, acute, sub- 



eerrate, hairy; pet. bifid; stig. sessile; silicic oval, flat, shorter than the pedicel. (T) 

 A little Spring flower, in rocky places. Can. to Va. 13'. 



2 D. ramosisslma Desv. Minutely pubescent, diffuse ; Ivs. linear-lanceolate, with 



remote and slender teeth ; rac. panicled ; silicic lanceolate, about the length of the 

 pedicel, the style half as long. if. Va. Ky. 5 S'. May. 



3 D. arabisans MX. Slightly pubescent ; root leaves in tufts, wedge-lanceolate, 



toothed ; stems leafy, erect, its Ivs. oblong ; silicic glabrous, lance-oblong ((>"), spread- 

 ing; style very short, v Lake shores, Vt. N. Y. Mich. 6 lO'. White. May. 



4 1>. incana L. Hoary pubescent; root leaves in tnfts, wedge-lanceolate, slightly 



toothed ; st. rlearly naked, branches and ped. very erect ; silicic oblong (.5"), twisted, 

 sty. very short, n or @ Mts. N.Vt. and N. 68'. Lvs. 6". Fls. very small, white. June. 



5 D. nemoralis Ehrh. Pubescecnt, branched; Ivs. oval, the cauline lanceolate, 



toothed ; pet. emarginate ; silicles half the length of the spreading pedicels, (a) Mich. 

 Mo. 8 KK. Flowers small, white or yellowish. May. 



6 D. l>racliycarpa N. Minutely pubescent; Ivs. ovate, the cauline oblong; rac. 



OO-flowered ; pet. obovate, entire ; silicle as long as the ped. 6-seeded. (T) Mo. and 

 South. 34'. Pod 2". April. 



7 D. cuiieifolia N. Hirsute, pubescent, branching and leafy below, naked above; 



Ivs. cuneate-oblong, sessile, denticulate; rac. elongated in fruit; silicles twice longer 

 (4") than the pedicels. (I) Ky. to La. 3 S'. March. 



8 D. Carolinia.na Walt. Hispid, branching and leafy below, naked above ; Ivs. en- 



tire, obovate and oval; rac. short ; silicles oblong-linear, longer 'than the pedicels (5"). 

 R. I. to Ga. and W. 13'. Much like No. 7. April June. 

 j3. mlcrdnlha. Silicles minutely hispid ; pet. often wanting. (D. micrantha N.) W. 



19. ARMORACIA, Rupp. HOUSE-RADISH. (Armorica, its native 

 country, now the province Brittany, France.) Sep. spreading. Pet. entire, 

 much exceeding the calyx. Silicles ellipsoid or globular, turgid, l-cellcd 

 from the incomplete partition. Style distinct. Seeds few (== c ). It Lvs. 

 oblong, undivided, or the lower pinnatifid. Flowers white. 



1 A. rustica.na Rupp. Radical Ivs. oblong, crenate; cauline long, lanceolate, in 

 cied ; silicic roundish, ellipsoid, much longer than the style. Eur. 



