Page 347, line 22, for Goodyera pubescens R. Br. read Goodyera pubes- 

 cens (Willd.) R. Br. 



Page 349, line 5, for Corallorhi/a odontorhiza Nutt. read 

 Corallorrhiza odontorhiza (Willd.) Nutt. 



Page 396, line 18 from the bottom, for Humulus japonicus Sieb. & 

 Zucc. read Humulus scandens (Lour.) Merrill. (Trans. American 

 Phil. Soc. n. s. 24: 138.1935.) 



Page 431, line 1, for subniida (Wats.) Standley read altissima var. 

 subniida (Wats.) Fern. (Rhodora 43: 288. 1941.) 



Page 436, line 6 from the bottom, for Stichworts read STITCHWORTS. 



Page 457, line 14, for Actaea alba (L.) Mill, read Actaea pachypoda 

 Ell. 



Page 466, line 1 from the bottom, for 12 read 14. 



Page 467, line 4, for 13 read 12. 



Page 467, line 13, for 14 read 13. 



Page 480, line 15 from the bottom, for BENZOIN Fabricius read 

 LINDERA Thunb. 



Page 480, line 14 from the bottom, for Benzoin aestivale (L.) Nees 

 read Lindera Benzoin (L.) Blume. (See Rehder's Trees & Shrubs, 

 ed. 2:259. 1940.) 



Page 488, line 3, for Lepidium Draba L. read 



Cardaria Draba (L.) Desv. (Rhodora 42: 304. 1940.) 



Page 494, line 8 from the bottom, for R. palustris var. glabrata read 

 R. islandica var. microcarpa. 



Page 494, line 6 from the bottom, for R. palustris var. hispida read 

 R. islandica var. microcarpa. 



Page 495, line 10, for Rorippa palustris (L.) Bess. var. glabrata 

 (Lunell) Vict.* read Rorippa islandica Borbas var. microcarpa 

 (Regel) Fern. (Rhodora 42: 271. 1940.) 



Page 495, line 16, for Rorippa palustris var. hispida (Desv.) Rydb. read 

 Rorippa islandica Borbas var. microcarpa (Regel) Fern. Fernald 

 writes that a well defined interior variety of this plant can not be 

 maintained (Rhodora 42: 273. 1940). 



Page 495, delete the last four lines. 



