470 SUPPLEMENT. 



34. NASTtJRTIUM, L., R. Br. 



N. lacustre, Gray, p. 146. Add syu. Neobeckia aquatica, Greene, I'ittonia, iii. 95. 

 N. SYLVESTRE, K. Br., p. 147. Becoming frequent in various parts of New England. 

 N. Sinuatum, Nl it., p. 147. Add syn. Roripa trachycarpa, Greene, 1. c. 96. 

 N. CUrvisiliqua, Nutt., p. 148. Add syn. Roripa occidental is, Greene, 1. c. 97. 

 N. obtusum, var. sphaerocarpum, Watson, p. 148. Strike out' " n. var.," and as 

 reference add, Wats, in Allen, List PI. Gray's Man. 123 (1893). 



N. tanacetifolium, Hook. & Arn., p. 148. Add syn. Roripa Walteri, Mohr, Bull. Torr. 

 Club, xxiv. 23. 



N. sessiliflormn, Nutt., p. 149. Add locality, Iowa City, Iowa, Hitchcock. 



42. DENTARIA, Tourn. Add lit. Greene, Pittonia, iii. 117-124, where 

 species of this gcims and Cardamine are redistributed. 

 D. cardiophylla, Robinson, p. 155. Strike out last sentence. 



43. CARDAMINE, Tourn. 



C. rhomboidea, DC, p. 156. In range, for "common in," substitute, common from E. 

 New England to. 



44. ARABIS, L. 



A. filifolia, Greene, p. 159. Add syn. Sibara JiUfolia, Greene, Pittonia, iii. 11. 



A. hirsuta, Scop., p. 162. A rare and exceptional form from Sunderland, Massachusetts, 



coll. Churchill & Deane, has spreading capsules. 

 A. Holbdellii, IIornem., p. 164. Eastward to Thunder Bay, Michigan, Wheeler. 

 A. SUflrutescens, Watson, p. 166. Southward to Truckee, California, Sonne. 

 A. Ho-wellii, Watson, p. 167. Add locality, Mariposa Co., California, Congdon. 

 A. piilchra, Jones, p. 167. Eastward to Grand Junction, Colorado, Miss Eastwood. 



45. STREPTANTHUS, Nutt. The treatment of this genus on pages 

 167-171, lacking the last touches of its author, contains several serious errors in 

 the arrangement and keys, due in considerable part to imperfect editing. In the 

 light of much more copious material now at hand, the following rearrangement 

 may be offered as a substitute. 



§ 1. EustreptXnthus, Gray. Flowers large: petals with broad blades; 

 filaments distinct : pods erect or ascending : glabrous annuals : species of the 

 interior. 



* Pedicels conspicuously bracteate : pods narrow. 

 S. bracteatus, Gray, p. les. 



* * Floral bracts minute or none. 

 S. maculatus, Nutt., p. 168. 

 S. platy carpus, Gray, p. 168. 



§ 2. EuCLisiA, Nutt. Petals narrow (the blade scarcely broader than the 

 claw), usually undulate-crisped. 



* Filaments all free to the base, 

 •t— Stem and leaves (sometimes ciliate on the margin but otherwise) glabrous and often 

 glaucous. 



