CRUCIFERAE. 



Vol. II. 



2. Dentaria diphylla Michx. Two- 

 leaved Toothvvort. Fig. 2094. 



D. diphylla Michx. Fl. Bor. Am. 2: 30. 1803. 

 Cardamine diphylla Wood, Bot. & Fl. 37. 1870. 



Stout, erect, simple, glabrous, 8'-l4' high ; 

 rootstock continuous, toothed. Basal leaves 

 long-petioled, 4'-5' broad, ternate, the divisions 

 short-stalked, broadly ovate, dentate, or some- 

 what lobed, about 2' long; stem-leaves gen- 

 erally 2, opposite or nearly so, similar, shorter 

 petioled and sometimes slightly narrower, 

 ovate or ovate-lanceolate; pedicels I'-ii' long; 

 flowers white, 6"-8" broad ; pods l' long or 

 more. 



In rich woods and meadows, Nova Scotia and 

 New Brun^ick to Minnesota, south to South 

 Carolina and Kentucky. Crinlile-root. Trickle. 

 Two-toothed pepper-root. May. 



Dentaria anomala Eames, known only from 

 Connecticut, growing with this species and D. 

 laciniata, is probably a hybrid between them. 



3. Dentaria maxima Nutt. Large Tooth- 

 wort. Fig. 2095. 



Dentaria maxima Nutt. Gen. 2: 66. 1818. 

 Cardamine maxima Wood, Bot. & Fl. 38. 1870. 



Glabrous, similar to the last species but 

 larger; rootstock jointed, prominently tuber- 

 cled. Stem-leaves 2-7 (generally 3), alternate, 

 similar to the basal ones, their divisions short- 

 stalked, ovate to obovate, toothed or cleft ; 

 flowers pale purple, 8"-io" broad. 



Maine to Michigan and Pennsylvania. Local. 

 May. 



Dentaria incisifolia Eames, known only from 

 Sherman, Connecticut, differs in having lanceo- 

 late, incised-dentate sessile leaf-segments. 



4. Dentaria heterophylla Nutt. Slender 

 Toothwort. Fig. 2096. 



Dentaria heterophylla Nutt. Gen. 2: 66. 1818. 

 Cardamine heterophylla Wood, Bot. & Fl. 38. 1870. 



Erect, simple, slender, scapose, glabrous or some- 

 what pubescent, 6'-i4' high ; rootstock near the sur- 

 face, jointed. Basal leaves long-petioled, ternate, 

 2'-3' broad; divisions short-stalked or sessile, ovate, 

 I'-ii' long, the terminal one cuneate or rounded at 

 the base, the lateral ones inequilateral, all crenately 

 toothed, lobed or cleft, the lobes or teeth mucronate; 

 stem-leaves generally 2, opposite or nearly so, peti- 

 oled, ternate, the divisions linear or lanceolate, short- 

 stalked, I'-iY long, entire or dentate; pedicels l' 

 long in fruit; flowers light purple, 8"-r2" broad; 

 pods ascending, linear, narrowed at each end, i' 

 long; style slender, 2"-3" long. 



In low woods. New Jersey and Pennsylvania, south 

 along the mountains to Georgia and Tennessee. The 

 stem-leaves often closely resembling those oiD. laciniata, 

 which blooms a little earlier. April-May. 



