72 cnucTFF.n^E. (must a no family.) 



r). D. nemordsa, L. Lcavesolilonporsomcwhat lanceolate, more or less 

 toothed ; nwemm ilnntjand (4'- 8' loiifj in fitiit) ; petals einaruinatc, small ; jxmIs 

 eUiptkul-Muiiii, half the lcn;;l/i of the Imrlzontiil or uidt/i/s/inddin;/ /xxlircis, pubes- 

 cent (D. ncmoralis, Ehrh.), or smooth (1). lUtca, DC). — Fort Gratiot, Michi- 

 gan, and northwestward. (Kix.) 



C. D. cuneifdlia, Nutt. Leaves obovatc, wedfic-shapcd, or the lowest 

 spatulate, toothed; raceme somewhat elongnttd in fruit (l'-3'), at Icngtii equal- 

 ling the naked ])edunclc; jjotals cmarginate, much longer than the calyx; poils 

 dilonrj-Hncar, minutthi hairi/, longer than the horizontal pedicels. — Grassy places, 

 Illinois, Kentucky, and southward. March, April. 



7. D. Caroliniana, Walt. Small (l' -5' high); leaves obovate, mostly 

 entire; peduncles scapc-likc; petals usually twice the length of the caly.x ; ra- 

 ceme short or corymbose in fruit (^'-I'long); pods broad/i/ linear, smooth, much 

 longer than the ascending pedicels. — Sandy and waste fields, Rhode Island to 

 "Wisconsin, and southward. March - May. — Petals often wanting in the later 

 racemes, especially in the 



Var. micreintha (D. micrantha, Xutl.), with minutely rough-hairy pods. 

 With the other, westward, DeU>, &c. 



§2. EROPIllLA, DC. Petals 2-cleft. (Annual or biennial : flowers white.) 



8. D. v6rna, L. (Whitlow-Grass.) Small (scapes 1'- 3' high) ; leaves 

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

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

 waste places and roadsides. Ajiril, May. — Not found north of Lower Canada : 

 perhaps introduced, (En.) 



11. ALYSSUM, Toum. Altssum. 



Like Vesicaria but with a flat pouch : only one or two seeds in a cell : flowor" 

 yellow or white. Filaments often toothed. (Greek name of a plant reputed 

 to check the hiccup, as the etymology denotes.) They are plants of the Old 

 World, two adventivc species deserving a mere mention, and one indigenous, 

 rare and doubtful. 



1. A. M.VKfTiMUM, L. (Sweet Altssum), with green or slightly hoary 

 linear leaves, honey-scented small white flowers, and 2-seeded pods, commonly 

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



2. A. CALYCXNTM, L., a dwarf hoary annual, with linear-spat\ilatc leaves, 

 pale yellow or whitish petals little exceeding the persistent caly.x, and orbicular 

 sharp-margined 4-secdcd pod, the style minute, occurs in grass-land at Amherst, 

 Mass., Tuckernum. (Adv. from En.) 



3. A. Lesetirii. (Vesicaria? Lcscurii, ed. 2.) Somewhat pubescent, but 

 green ; stems diflusely ascending from a biennial joot : leaves oblong or oval, 

 sparingly toothed, those of the stem halfrla.^pint] hi/ a .sagittate base; racemes 

 elongated, many-flowered ; pedicels ascending ; filaments inflated at the base ; 

 style half the length (flhi- hispid or]ncn]ar or broadly u\i\\ flat ]>mI ; seeds wing-mar- 

 gined, 1-4 in each cell, on free stalks. — Hills near Nashville, Tennessee, Leo 

 fj'.squereux. April, May. — Petals golden yellow, rather large. Ambiguous 

 between this genus and the next. 



