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IOWA ACADEMY OF SCIENCE 
Usually hypophyllous; mycelium persistent or scant and evanescent; perithe- 
cia usually scattered, 140-270 micra in diameter or larger, cells obscure, 15-20 
micra wide; appendages 5-18 or more, 1-3 times the diameter of the perithecium, 
acicular, rigid, hyaline, aseptate, swollen at the base into a hollow bulb, asci 
5-45, 60-105x20-40 micra, rarely larger, pedicellate, spores generally 2, rarely 
3, 30-42x16-25 micra, when 3 smaller. 
On Acer saccharum Marsh. Fayette (Fink). 
On Be tula papyri f era Marsh. * Fayette, 1893 (Fink). 
On Cornus florida L. *Fayette, 1893 (Fink). 
On Cornus stolonifera Michx. Fayette, Sept., 1893 (Fink). 
On Corylus americana, L. *Fayette, 1893 (Fink) ; Johnson Co., Sept. 25, 
1886 (Macbride) ; Sept. 19, 1899 (Shimek) ; *Oct., 1886 (Hitchcock). 
On Crataegus coccinea L. Johnson Co., Oct., 1894 (X). 
On Crataegus sp. *Fayette, 1893 (Fink). 
On Crataegus tomentosa L. Ames, Oct. 14, 1901. 
On Celastrus scandens L. Johnson Co., X (X). 
On Fraxinus lanceolata Berk. Story City, Aug. 27, 1903 (Buchanan). 
On Fraxinus sp. *Fayette, 1893 (Fink). 
On Meibomia canadense (L.), Kuntze. Johnson Co., X (X). 
On Meibomia grandiflora (Walt.), Kuntze. *Fayette, 1893 (Fink). 
On Ostrya virginiana (Mill.) Willd. Ames, 1877 (Bessey) ; Decatur Co., Oct. 
28, 1905 (Anderson) ; Iowa City, Oct. 6, 1900 (Stromsten) ; Muscatine, Oct. 
20, 1900 (Stromsten). 
On Quercus palustris DuRoi. Johnson Co., Nov., 1886 (Macbride). 
On Quercus rubra L. Johnson Co., Oct. 12, 1886 (X). 
On Quercus velutina Lam. Johnson Co., 1886 (Macbride). 
On Ulmus americana L. * Fayette, 1893 (Fink). 
On Ulmus racemosa Thomas. Decatur Co., Oct. 28, 1905 (Anderson). 
On Xanthoxylum americanum Mill. Ames, Sept. 15, 1878 (Bessey) ; Fayette, 
Sept., 1894 (Fink). 
This species seems to be very common in the eastern part of the 
state but is not so plentiful in the southwestern part. I have found 
it rarely in Decatur County. It probably does not grow on herba- 
ceous plants but perithecia are often found there. The apical out- 
growths serve to attach the perithecium to the substratum and by 
this means stray perithecia may seem to be firmly attached where 
they did not originate. 
Phyllactinia corylea tomentosa, Macbride & Peck, Var., Nov. 
See Plate I. 
Hypophyllous; mycelium persistent; perithecia as in P. corylea; appendages 
2-3 times the diameter of the perithecium; divided down to the bulbous base, 
the divisions flexuously bent in graceful curves, hyaline, aseptate. 
On Quercus velutina, Lam. Johnson Co., 1886 (Macbride). 
In the herbarium of the State University were a few specimens 
labeled Phyllactinia suffulta var. tomentosa. On inquiry Prof. 
