402 The Botanical Gazette. [December, 
with a query. The description and figures given in either 
case leave little doubt of the correctness of this reference, 
but a comparison of authentic specimens has not been made. 
Whether one or both of the forms described by Schroeter 
under Cystobacter may not prove abnormal conditions of this 
species is also uncertain; but on very moist media it shows 
conditions closely resembling his descriptions, and becomes 
chestnut brown after continued exposure to moisture, thus 
presenting an additional point of resemblance. Even in its 
natural substratum cyst formation is subject to great irregu- 
larities, especially if the rising rod masses become slightly dry 
during the process. In such cases the latter may heap them- 
selves together in irregular cyst masses lying directly upon 
the substratum with little or no differentiation of a cysto- 
phore. 
The genus Stigmatella, which was founded upon this spe- 
cies, is made by Saccardo to include two species, S. auranita- 
ca and S. pubescens Sacc. & Ell., the latter having been 
formerly described under the name Spherocreas pubescens 
Sace. & Ell. (Michelia u, p. 582.) Although Saccardo re- 
marks concerning this form, ‘‘ De identitate Sphe@rocreats 
cum Stgmatella nullum mihi est dubium,” it is difficult to 
see on what this opinion is based; the fungus in question con- 
sisting of a rounded mass of large chlamydospores borne ter- 
minally on well defined hyphz and surrounded by a woolly 
mass of somewhat differentiated hyphe. It is needless to 
remark that the two can have no connection, Sphewrocreas 
being clearly a fungus allied to if not generically identical 
with forms included in the genus Exdogone. 
Chondromyees lichenicolus n. sp.—Plate XXIII, figs. 20- 
23.—Colonies reddish, rods cylindrical, tapering slightly, 
5~7.6y. Cystophore simple, short, squarish, often absent oF 
ill developed, 7-8x 10y. Cysts single, rounded or irregularly 
lobed, often confluent, bright red, 35 x 28. 
Parasitic on living lichens, which it destroys, New Haven, ce 
This species has not been met with in any locality other 
than the one mentioned, where it occurs abundantly on the 
trunks of the elms and maples along the city avenues, often 
covering patches several feet in length. The cysts are very 
irregular in form, often lobulated and laterally confluent, and 
their crowded habit and deep red color make them very com 
Spicuous. Owing to the shortness of the cystophore, it is seen 
