68 CRUCIFERJE. (MUSTARD FAMILY.) 



2. DRABJ5LLA. ir/?i/r;- munials ; leafy stems short ; floirc rs white (yellow 

 in n. 5) ; style none. (Leaves oblong or oborate, hairy, sessile.) 



3. D. Carolmiana, Walt. Small (1 -5' high); leaves obovate, entire ; 

 peduncles scape-like ; petals usually twice the length of the calvx ; raceme 

 short or corymbose in fruit (-!' long); pods broadly linear, smooth, much 

 longer than the ascending pedicels. Sandy and waste fields, K. Mass, to 

 Minn., and southward. March -May. Petals often wanting in the later 

 racemes, especially in the var. MICUAMIIA, (iray, with minutely rough-hairy 

 pods, which is found with the other, westward. 



4. D. CU.neif61ia, Nutt. Leaves <>l>ovatr, wedge-shaped, or the lowest 

 spatulate, toothed; raceme somewhat t'loiujdlnl in fruit (1 -3'), at length equal- 

 ling the naked peduncle; petals emarginate, much longer than the calyx; 

 pods oblong-lineaf, minutely hairy, longer than the horizontal pedicels. Grassy 

 places, 111. to K. Kan., and southward. March, April. 



5. D. brachycarpa, Nutt. Low (-2-4' high), minutely pubescent; 

 stems leafy to the base of the dense at length elongated raceme; leaves nar- 

 rowly oblong or the lowest ovate (2-4" long), few toothed or entire; flowers 

 small ; pods smooth, narrowly oblong, acutish (2" long), about the Inn/th of the 

 ascending or s/ir< a<lin<i /n direls. Dry hills, 111., Ky., Va. (^-1 . //. L'urtiss), and 

 southward. April. Totals sometimes minute, sometimes none. 



6. D. nemor6sa, L. Leaves oblong or somewhat lanceolate, more or 

 less toothed , nn; m< s elongated (4-8' long in fruit) ; petals emarginate, small; 

 pods elliptical-oblong , half the l< i/</th of tin- horizontal or widely-spreading pedi- 

 eels, pubescent or smooth. Fort (iratiot, Mich., X. Minn., and westward. (Ku.) 



3. ER&PHILA. Petals L'W,;/?. (Annual or biennial ; flowers white.) 



D. vfeRNA, L. ( Wiirn.ow-tii: vss.) Small fseapes 1 -3' high); leaves all 

 radical, oblong or lanceolate ; racemes elongated in fruit; pods varving from 

 round-oval to oblong-lanceolate, smooth, shorter than the pedicels. Sandy 

 waste places and roadsides. April, .May. (Nat. from Ku.) 



7. ALYSSUM, Tourn. 



1'od small, orbicular, with only one or two windless seeds in a cell; valves 

 nerveless, somewhat con\e\, the margin flattened. Flowers yellow or white. 

 1'ilaments often toothed. Cotyledons ae, imibent. (dreck name of a plant 

 reputed to check the hiccup, as the etymology denotes.) 



A. MAKi'riMi'M, L. (Sui.ii Ai>fM), with green or slightly Imarv 

 linear leaves, honey-scented small white flowers, and iJ-seeded pods, commonly 

 cult., begins to be spontaneous southward. (Adv. from Ku.) 



A. CAI.^I IM M, L., a dwarf hoary annual, with liuear-spatulate leaves, pale 

 yellow or whitish petals little exceeding the persistent calyx, and orbicular 

 sharp margined 4-seeded pod, the style minute, occurs occasionally in grass- 

 land. (Adv. from Eu.) 



8. LESQTTERELLA, Watson. 



Pod mostly globular or inflated, with a broad orbicular to ovate hyaline 

 partition nerved to the middle, the hemispherical or convex thin valves nerve- 

 Jess. Seeds few or several, in 2 rows, flat. Cotyledons accumbent. Filaments 

 toothless. Low herbs, hoary with stellate hairs or lepidote. Flowers mostly 

 yellow. (Named for Leo Lesquereux.) 



