116 
IOWA ACADEMY OF SCIENCES. 
72. Dasyscyi^ha pycjmma (Fr.) Sacc. 
Plants small, yellowish, with a long stem; stem often 
branched. On half buried sticks and roots in damp place. 
Summer, 1904. Not common. 
73. Trichopeziza tilioe (Peck) Sacc. 
Plants small, white, clothed externally with a dense 
covering of white hairs. Abundant on decaying branches 
of Tilia americana. Unionville, Iowa, May, 1904. 
74. Trichopeziza comata (Schw.) Sacc. 
Plants very small, white, similar to preceding in general 
appearance but smaller. On decaying oak leaves in wet 
places. Summer, 1904. Iowa City. Not uncommon. 
75. Phialea fructigena (Bull.) Gill. 
Plants small, yellowish, stipitate or nearly sessile. On 
acorns and hickory nut husks in wet places in woods. 
Summer and autumn, 1904. Iowa City. Not uncommon, 
sometimes abundant. 
76. (Jihoria pseiidotuherosa Rehm., 
Plants stipitate about 1 cm. in diameter. On acorns. 
Summer, 1904. Iowa City; — Decorah, Iowa, September, 
1882, E. W. D. Holway. Not common. 
77. Helotium citrinum (Hedw.) Fr. 
Plants rather large, .5 to 1 cm. in diameter, stipitate or 
nearly sessile, lemon-yellow. On rotten wood. Various 
collections. Iowa City, 1902-5. Very common. 
78. Helotium aciculare (Bull.) Pers. 
Plants small, yellowish, shortly stipitate. On decaying 
leaves of Populus tremuloides. Autumn, 1904. Iowa City. 
Not very common. 
79. Helotium pallescens (Pers.) Fr. 
Plants very small, light yellow. On much decayed wood. 
Summer, 1904. Iowa City. Not common. 
80. Coryne sarcoides (Jacq.) Tul. 
Plants rather large, irregular in form, purple or reddish,, 
often csespitose. On rotten wood in moist places. Various 
collections, 1902-4. Iowa City. Rather common. 
