660 Wisconsin Academy of Sciences, Arts, and Letters. 
20 Ascochyta cycadina Scalia. 
Fungi Sicil. orient, ser. Ill, p. 12 (1902). 
Spots subcircular, white with a red border; pycnidia 
epiphyllous, black, punctif orm, globose-depressed, walls 
parenchymatous, composed of small polygonal olive-brown 
cells , ostiolate, up to 300/* in diameter; sporules yellowish, 
oblong, ends rounded or subacute at base, uniseptate, little 
or not at all constricted, 10-13 x 3-4/*, borne on filiform 
basidia of about equal length. On leaves of Cycas revoluta. 
21 Ascochyta dianthi (A. & S.) Lib. 
Sphaeria (Depazea) dianthi Alb. & Schw. Lus. tab. VI, 
fig. 2. 
Spots indefinite, pale; pycnidia amphigenous, small, dark 
brown, ostiolate; sporules hyaline, long fusiform to clavate-fusi- 
form, rounded at ends, with a small appendage, uniseptate, con¬ 
stricted, 14^16 x 3-4^. On Dianthus. 
22 Ascochyta diapensiae Rostr. 
Oest. Oroenl. Svampe, p. 28. 
On white areas involving the entire leaves; pycnidia epiphyl¬ 
lous, globose, minute; sporules cylindrical, thickened at the end, 
often uniseptate, 12-15 x 3-5/*. On leaves of Diapensia lap - 
ponica. 
23 Ascochyta fragariae Sacc. 
Mich. 1:169. 
Spots subcircular, becoming white with a reddish black 
margin; pycnidia globose-lenticular with thin parenchymatous 
subochraceous walls conspicuously thickened about the broad 
ostiole, 100/* in diameter; sporules olive-tinted, oblong-fusoid, 
straight, uniseptate, not constricted, 12-15 x 3-4^. On leaves 
of Fragaria. 
24 Ascochyta fremontiae Hark. 
Fungi Pacif. 5: 439. 
Pycnidia hypophyllous, scattered, small; sporules brown 
tinted, subcylindrical, narrower at the ends, flexuous, 1- (1-3) 
septate, 30-40 x 6-12^. On leaves of Fremontia californica. 
