6 

 Page 813, for lines 11-17, substitute the following: 



Pedicels about equaling the fruiting calyx. (See excluded species no. 535, 



p. 1085 . . .S. nrticae folia. 



Pedicels much shorter than the fruiting ca'.yx. 

 Corolla without a hairy ring inside. 



Corolla about 2 cm long. (See excluded species no. 534, p. 1085.) 



S. pratensis. 



Corolla about 1 cm long 3. S. sylvestris. 



Corolla with a hairy ring inside. (See excluded species no. 536, p. 1085.) 

 S. verticilhtta. 



Page 820, line 10, for Pycanthemum read Pycnanthemum. 



Page 822, line 1 from the bottom, for 15 read 16. 



Page 840, line 8, for long read short and after only interpolate with 

 long hairs. 



Page 854, line 10, for 45-55 read 45-55 mm. 



Page 855, line 4, for Farw. read Pennell. 



Page 860, line 13 from the bottom, for (L.f.) read (L.). 



Page 866, last line, add var. glandulosa (Scheele) Fern. (Rhodora 

 43: 287. 1941.) 



Page 871, line 2 from the bottom, for Houstcnia angustifolia Michx. 

 read Houstonia nigricans (Lam.) Fern. (Rhodora 42: 299. 1941.) 



Page 895, line 1 at top of page, for Lobeliaceae read Campanulaceae. 



Page 909, line 4, delete (a barium salt). 



Page 923, line 17 from the bottom, for Solidago nemoralis Ait. var. 

 decemflora (DC.) Fern, read Solidago nemoralis Ait. var. longi- 

 petiolata (Mack. & Bush) Palmer & Steyermark. (Ann. Missouri 

 Bot. Gard. 22: 660. 1935 and Rhodora 40: 133. 1938.) 



Page 928, line 13 from the bottom, for Boltonia asteroides (L.) L'Her. 

 read Boltonia latisquama Gray var. recognita Fern. & Grisc. (Rho- 

 dora 42: 491. 1940.) 



Page 945, line 7, for Aster missouriensis Britton (Rhodora 30: 177. 

 1928.) read Aster pantotrichus Blake. (Jour. Washington Acad. 

 Sci. 31: 327. 1931.) 



