64 CRUCIFKKJC. (MLSTAltU FAMILY.) 



III. LOMENTACE-E. Pod articulated, separating across into joints. 



Tribe VII. CAKlLIXEiE. Ct'tyledons |>l;ine ami aCcumlKiit, as iiiTribe 1. 



19. Cukile. I'oU sliDit, •! jointed : tlio joiiiU l-CL-Uud ami l-secdeil. 



Tribe VIII. It.-tPIIANEiE. Ciityledoiis coiidupliciite and iiicumlMint, as in Tribe 3. 



2U. Rapliaiiua. IVl elongated, severul-scedod, transversely iiiUicoptud. 



1. NASTURTIUM, H. Br. WAXKu-CnEss. 



Pod a short siliquc or a silicic, varying from oblong-linear to globular, terete 

 or nearly so. Seeds small, turgid, niarginless, in 2 irregular rows in each cell 

 (except in No. 2). Cotyledons accumbcnt. — Atiuatic or niarsli plants, with 

 yellow or white dowers, and commonly pinnate or pinnatiHd leaves, usually 

 glabrous. (Name from Nusus lortits, a convulsed uosc, alluding lo the effect of 

 its pungent qualities.) 



§ 1. P(tuU ich'tc, twice the hiitjth of the. cali/x : {xxls linear: leaves pinnate. 



1. N. officixXle, R.Br. (Tkle WATEU-C'Ktss.) Stems spreading and 

 rooting; leaflets 3- 1 1, roundish or oblong, nearly entire; pods (G"- 8" long) 

 ascending on slender widely spreading pedicels, y. — Brooks and ditches; 

 escaped from cuUivation. (Nat. from En.) 



§ 2. Petals yellow or yellowish, seldom miwh exceeding the calyx : pods linear, oblowj, 

 or even ovoid or globular : leaves mostly jdnnuiijid. 



* Perennial from creeping or subterranean shoots : flowers rather large, bright yellow. 



2. N. svLVESTRE, K. Br. (Yellow Ckess.) Stems a.scending; Icuces 

 pinnate! y jiarttd, the divisions toothed or cut, lanceolate or linear; pods (.^'long) 

 on slender pedicels, linear and narrow, bringing the seeds into one row ; style 

 very short. — AVet meadows, Massachusetts to Virginia: rare. (Nat. from Eu.) 



3. N. sinuatum, Nutt. Stems low, diffuse; leaves pinnniely cleft, the 

 short lobes nearly entire, linear-oblong; pods linear-oblong (4" -G" long), on 

 slender pedicels ; style slender. — Banks of the Mississippi and westward. June. 



* * Annual or biennial, rarely perennial? with sim/ileflbroiis roots: flowers small or 



minute, greenish or yellowish : leaves somewhat lyrate. 



4. W. sessilifldrum, Nutt. Stems erect, rather simple ; leaves obtusely 

 incised or toutlu'd, obovate or oblong ; /?oit'M-.s minute, nearly sessile; pods elon- 

 gated-oblong (.5" - G" loni:*), thick ; style very short. — W. Illinois to Tennessee 

 and southward. April -June. 



N. Obttisum, Nutt. Stems much branehcd, diffusely spreading; j^fc fl 



piniiately jiartedvr divided, the divisions roundish and obtusely toothed or rep: 

 flowers minute, shoii-pedicelled ; pods longer than the pedicels, varying from lincar- 

 oblong to short-oval ; style short. — With No. 3 and 4. 



7. N. palustre, DC (M.\ksii Cress.) Stem erect; leaves pinnnidy 

 clffl or jiarled, or the upper laciniate; the lobes oblong, cut-toothed; pedicels 

 about as long as the small /lowers and mostly longer than the oblong, ellipsoid, or 

 o\o\i\ ])ods ; style short. — .Wet jjlaccs or in shallow water ; common. June- 

 Scpt. — Flowers only 1"-1^" long. Stems \°-^° high. — The typical form 

 with oblong pods is rare (W. New York, Dr. Sartivell). Short pods and hirsute 

 stems and leaves are common. Var. hisi-idum (N. hispiduin, DC.) is- a form, 

 with ovoid or globular pods. (Eu.) 



