Dec, 1901.] Note to Ohio Fungi Exsiccati. i6i 



IV. Group. 



11. Schraubenflieger, e. g. Maples, genera of Coniferie, Sapindaceic, etc. 

 V. Group. 



12. Schraubendrehflieger, e. g. fruit of Liriodendron tulipifera. 



I^em /. The recent death of Thomas Meehan, horticulturist 

 and botanist, removes from the list of active American workers 

 one whose numerous, accurate and original observations contrib- 

 uted greatly to the advancement of botanical science. 



NOTE AND CORRECTION TO OHIO FUNGI EXSICCATI. 



W. A. KellERMAN. 



A critical inspection of the nomenclature used for the first 

 Fascicle of the Ohio Fungi might seem to warrant the conclusion 

 that the judgment of more recent workers is sometimes ignored 

 and that a too conservative course has been adopted. But it 

 shotild be remembered that the main purpose is to furnish Ohio 

 material accompanied b}- names (occasion all}' synonyms) that 

 were undoubtedly applied to the species represented. I have 

 preferred to use for the Rust on Sunflower, Puccinia helianthi, 

 rather than P. tanaceti — recent work on other species suggesting 

 that with this also when full}' studied, a physiological distinction 

 may supplement the too insignificant morphological difference. 

 Again, I have used Aecidium album, which Clinton applied to 

 the first stage of the Uredine found on Vicia, not ignorant of the 

 fact that Dietel gives this as a stage of Uromyces albus — but 

 should not this first be substantiated by cultures ? It is to be 

 added that through inadvertancy Peck's later name (Aecidium 

 porosum ) was used, hence here follows a corrected label with 

 both Clinton's and Peck's descriptions: 



2. Aecidium album Clinton. 



Aecidium porosum Peck. 



On Vicia americana Muhl. 



Lakeside, Ottawa Co., O. May 17, 1901. 



Coll. W. A. Kellerman. 



" Aecidium album Clinton, spots none ; peridia scattered, short, 

 white, the margin subentire ; spots subglobose, white, about .0008 

 inches in diameter." Report on the State Museum, State of New 

 York, 26 : 78. 1873. 



"Aecidium porosum, Pk. Spots none; cups crowded, deep- 

 seated, broad, wide-mouthed, occupying the whole lower surface 

 of the leaf to which they give a porous appearance ; spores orange- 

 colored, subangular, .0008-.001 inch in length." Botanical Gaz- 

 ette, 3:34. April, 1878. 



