34 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull 
mycelium, protruding in tufts through the stomates. Figs 
16-18, 30-34. 
About 70 species have been described, of which 25 occur 
in North America. Of the latter, four occur on cultivated 
hosts, but are not of especial economic importance. So far & 
species have been reported in Connecticut. 
Key to Species of Entyloma. * 
J. Spores dark tinted, reddish brown, often adhering to. 
gether. 
A. Sori forming minute, black, oblong or linear striz. 
1. Spores golden brown, 7-1Ip....... E. lineatum, 
2. Spores darker brown, 8-14u...E. crastophilum. 
II. Spores hyaline or yellowish tinted; sori forming discol- 
ored spots. 
A. Spores not apiculate, often adhering somewhat. 
1. With hypophyllous conidia or sporidia. 
a. Sori yellowish or reddish brown, I-2 mm. 
E. Thalictri 
b. Sori whitish or yellowish, I-lo mm........ 
E. Lobelie 
c. Sori yellowish or reddish, often bordered 
O20 WM nee walvdadeuee E. Physalidis 
2. Usually without conidia. 
a. Sori light yellowish, 14-2 mm...E. Linarie 
b. Sori yellowish or reddish brown, 2-5 mm... 
E. polysporum. 
B. Spores apiculate and pedicellate, never adhering ; sor 
yellowish, later reddish brown..... E. Nymphee 
Entyloma lineatum (Cke.) Davis. Figs. 16, 32. The 
sori occur in the leaves, leaf sheaths, or occasionally in the 
culm, and are small, 14-3 mm. in length, subcircular tc 
(chiefly) linear, scattered or fusing somewhat, lead-colorec 
or black, and rather permanently covered by the epidermis 
The spores are light golden brown, firmly agglutinated, usually 
ovoid to subspherical or somewhat polyhedral, smooth, anc 
7-11 in length. 
