VOL. II.] MUSTARD FAMILY. 133 



4. Dentaria heterophylla Nutt. Slender Tooth wort. (Fig. 1738.) 



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

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



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

 what pubescent, io / -i4 / high; rootstock near the 

 surface, jointed. Basal leaves long-petioled, ter- 

 nate, 2 / ~3 / broad; divisions short-stalked or sessile, 

 ovate, \ f -\Yz' 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, petioled, ternate, the divisions linear 

 or lanceolate, I'-iK' l n g entire or dentate; pedi- 

 cels i' long in fruit; flowers light purple, 8 // ~9 // 

 broad; pods ascending, linear, narrowed at each 

 end, \' long; style slender, 2"-$" long. 



In low woods, New Jersey and Pennsylvania, south 

 along the mountains to Georgia and Tennessee. The 

 stem-leaves often closely resemble those of D. lacin- 

 iata, which blooms a little earlier. April-May. 



20. LUNARIA L. Sp. PI. 653. 1753. 



Annual, biennial or perennial, more or less pubescent erect branching herbs, with broad 

 simple dentate or denticulate mostly cordate leaves, and large violet flowers in terminal ra- 

 cemes. Lateral sepals saccate at the base. Petals obovate, clawed. Siliques long-stipitate, 

 very flat, oblong or elliptic, the papery valves reticulate-veined, dehiscent. Style filiform; 

 septum hyaline, translucent, shining. Seeds circular or reniform, very large, winged, borne 

 on long funiculi, which are adnate to the septum; cotyledons large, accumbent. [Latin, 

 moon, in allusion to the shining partition of the pod.] 



Two known species, natives of Europe and Asia. 



Siliques oblong, pointed at both ends; perennial. i. L. rediviva. 



Siliques elliptic, rounded at both ends; annual or biennial. 2. L. annua. 



i. Lunaria rediviva L/. Perennial 



Satin-pod, or Satin-flower. 



(Fig. 1739.) 



Lunaria rediviva L. Sp. PI. 653. 1753. 



Perennial, pubescent with short simple 

 hairs, stem rather stout, 2-4 tall. Leaves 

 broadly ovate, acuminate at the apex, deeply 

 cordate, or the upper rounded at the base, 

 thin, the lower long-petioled, 3 / -6 / long; 

 flowers 8 // -i2 // broad, slender-pedicelled; 

 pods oblong, 2 / ~3 / long, drooping, about i' 

 wide at the middle, borne on slender stipes 

 of about one-half their length; seeds reni- 

 form, broader than long. 



In thickets, Canadian side of Niagara Falls. 

 Escaped from gardens or fugitive from Europe. 

 Determination based on flowering specimens 

 collected by Professor Macoun which may, per- 

 haps, belong to the following species. The plant 

 is commonly cultivated for its ornamental flow- 

 ers and pods. May-July. 



