ELISHA MITCHELL SCIENTIFIC SOCIETY. 47 



Conidia hyaline, terete, straight or curved, multiseptate, 

 50 — 200 X 3 — 4. On the stems the spots are elliptical to 

 oblong, dirty white with dark border. 



On leaves and stems of Acalypha caroliniana^ 1998, 

 Auburn, August 6, 1891; 2102, September 12, 1891, New- 

 man. 



19. Cercospora polygonacea E. & E. Spots ochra- 

 ceous; suborbicular, 3 — 10 vim.^ parts of the leaf often red- 

 dish. Hyphse amphigenous, fasciculate, tufts numerous 

 in center of spot, scattered toward border, when young 

 faintly fuliginous and nearly cylindrical, in age plainly red- 

 dish brown, septate, subflexuous and denticulate, 30 — 80 

 X 4, 5. Conidia hyaline, obclavate, straight or curved, 

 faintly septate, 50 — 100 X 4 — 5. 



On leaves of Polygon inn dnmetornmv2,x. scandens^ 2225, 

 Auburn, October 14, 1891, Duggar. Specimens were sub- 

 mitted to Ellis. 



20. Cercospora Lobell^ K. & S. Spots amphigenous, 

 dirty white with dark indefinite purple border, usually 

 small, irregular, 2-6 mm. Hyphse amphigenous, more 

 numerous above, fasciculate from tuberculate base, strongly 

 denticulate, olive brown when young with reddish tinge 

 to reddish brown in age, 10—150 X 4, 5 — 5, long ones 

 subgeniculate. Conidia faintly colored obclavate, septate 

 and sometimes constricted, 50 — 100 X 4, 5. 



On leaves of Lobelia amcena^ 2226, Auburn, October 

 14, 1 89 1, Atkinson. Specimens of this were submitted 

 to Professor Kellerman. 



21. Cercospora rhuina C. & E. Spots amphigenous, 

 above dull reddish brown bordered by black, or entirely 

 black and often with indefinite red border, in age some- 

 times becoming greyish in center, light brown below, fre- 

 quently arched upward, with or without a narrow elevated 

 border. Hyphse densely fasciculate, amphigenous, from 

 tuberculate stroma, dull reddish brown, irregularly flexu- 



