72 
IOWA ACADEMY OP SCIENCES 
variable in color, often sulphur-yellow when fresh with a tinge of green; 
hymenium sometimes becoming reddish or reddish-brown, when dry 
almost black; sporidia elliptical, narrowed at the ends, 10 to 12 by 3 to 
4 mic.; asci about 75 by 8 mic. 
On petioles of ash and hickory. Autumn, 1905, Mt. Pleasant, Iowa. 
This species has been found to be very common during the last season 
from summer to autumn in moist places on petioles of leaves which are 
partly buried. The length of the stem varies according to the depth at 
which the petioles are buried. 
108. Durella clavispora (B. & Br.) The speicmens included in the 
herbarium of the author under this number are probably Lecanidion 
stratum. (Hedw.). The latter species is very common and up to date has 
been collected by the author on fifteen different kinds of wood, bark, and 
herbaceous stems. The two species are cjosely related. 
109. Morchella crassipes Pers. Plants large, pileus yellowish-brown, 
pits large and irregular; asci 8-spored; sporidia 20 to 23 by 10 to 12 
mic.; stem large, often nearly as thick as the pileus and rather irregular. 
In grassy place, Iowa City, Iowa. May, 1905. 
110. Phialea scutula (Pers.) Gill. Plants small, 1 mm. in diameter 
«r less, stipitate, stem about 1 mm. long, slender, plants yellowish, hymen- 
ium concave; sporidia 18 to 22 mic. long, clavate or nearly so, 2 to 3- 
guttulate and sometimes apparently 1-septate. 
On Polygonum stems in wet places. Summer, 1905. Mt. Pleasant, 
Iowa. 
111. Propolis faginea (Schrader) Karsten. Plants at first buried in 
the substratum finally breaking through, hymenium becoming exposed in 
elongated white patches, often several mm. in length and usually some- 
what narrower, broken epidermis forming a rough margin; asci 8-spored, 
100 by 12 mic.; sporidia elongated, rounded at the ends, straight or curved 
w'ith 1 to 3 guttulae (usually 2) about 25 by 8 mic.; paraphyses slender. 
On old wood of Sycamore (Platanus occidentalis) , grape vine {Vitis- 
vulpina), blue beech (Carpinus caroliniana) Mt. Pleasant, Iowa. Jan- 
uary, 1906. 
112. Phaeopezia fuscocarpa (Ell. & Hoi.) Cups sessile, becoming 
nearly plane, externally yellowish-green, hymenium dark greenish becom- 
ing almost black, 5 mm. or less in diameter; sporidia 2-guttulate, green- 
ish becoming brown, 7 to 8 by 3 to 4 mic. 
On old wood. Mt. Pleasant, Iowa. Summer and autumn, 1905. 
113. Patellaria (Mycolecidea) triseptata (Karst.). Plants sessile, 
about 1 mm. in diameter or less, round, at first concave becoming plane, 
black; asci about 50 by 12 to 14 mic., 8-spored; sporidia mostly in 2 rows, 
when mature brownish, 3-septate, a little constricted at the septa, 15 to 17 
by 5 mic., often slightly curved; paraphyses slender, branched, forming 
a brownish epithecium. 
On old wood. Mt. Pleasant, Iowa. Autumn, 1905. . 
,114. Sclerotinm seaveri Rehm. Ann. Mycol. 4; 66. Cups 2 to 6 mm. 
in^diameter, concave or nearly plane with a depression in the center, sup* 
ported on a long stem, length Oi.stem varying according to thp depth at ^ 
