658 Wisconsin Academy of Sciences, Arts, and Letters . 
innate, irregularly scattered, depressed-hemispherical, 60-75/x in 
diameter; sporules from narrow-elliptical to ovate-oblong, 
brownish, uniseptate, 7-9 x 2%-3/*. On leaves of Cephalanthus 
occidentalis. 
13 Ascochyta cheiranthi Bres. 
Hedwigia 39 : 326. 
Spots scattered, round to oblong, alutaceous to brownish with 
dark margin; pycnidia epiphyllous, arranged in a circle, pale, 
100-140/x; sporules hyaline, oblong to subcylindrical, occasionally 
somewhat curved, uniseptate, 7-9 x 21/2-3%/*. On leaves of 
Cheiranthus cheiri. 
14 Ascochyta chrysanthemi Stevens. 
Bot. Gaz. 44:246. 
Pycnidia “few, immersed, early erumpent, single or scattered, 
round, hemispherical, amber colored, 100-200 mostly about 150/x, 
ostiolum central, small, dark bordered, often raised by a short 
neck, surface reticulate; pycnidia on agar media irregular, 
often with two ostioles and varying much in size, black in color; 
mycelium abundant, innate, also superficial, aerial, floceose, 
richly septate;” sporules “oblong, straight or irregular, 10-20 
x 3-6.2/* mostly 6.2 x 10/x, ends obtuse or acute, septum, usually 
one, often obscure, rarely 2 or 3, usually without constriction 
until germination, protoplasm vacuolate, hyaline or light pink 
in mass.” On Chrysanthemum indicum (cult.). 
15 Ascochyta citrullina C. O. Smith. 
Del. Ag’l Exp. Station Bull. 70. 
Diplodina citrullina (C. O. Sm.) Grossenbacher. N. Y. 
Ag’l Exp. Station, Tech. Bull. 9:226. 
On whitened areas on the stems; pycnidia numerous, de¬ 
pressed-globose, pale brown, ostiolate, with thin-cellular walls, 
90-150/x in diameter; sporules hyaline, oblong to obovate, 
ends rounded, uniseptate, becoming constricted at the septum, 
14x4^-5/x. On stems of Citrullus vulgaris (cult.). 
16 Ascochyta clematidina Thuem. 
Pilzfl. Sibir. no. 619. 
Spots suborbicular to irregular, brown becoming cinereous 
with a blackish brown border; pycnidia epiphyllous, prominent, 
