36 ARTHUR: NEW SPECIES OF UREDINEAE 
American forms, a view which the difference in host species, geo- 
graphical location, and habit of the rust favor. From the material 
submitted by Mr. Johnston it seems that the pycnia appear in 
May, thickly covering young leaves and shoots and causing more 
or less hypertrophy, and are soon followed by primary uredinia. 
The secondary uredinia appear some months later unaccompanied 
by pycnia, and are mostly confined to the upper surface of the 
leaves, without producing hypertrophy, and on old plants the telia 
are similarly formed. 
Gallowaya pinicola nom. nov. 
Coleosporium Pini Gall. Jour. Myc. 7: 44.. 18091. Not C. Pint 
Lagerh. 1889. 
Gallowaya Pini Arth. Résult. Sci. Congr. Bot. Vienne 336. 1906. 
It has been known for some time that the specific name 
selected by Dr. B. T. Galloway for his rust, which was afterward 
transferred to the genus Gallowaya, had been published some two 
years earlier by Lagerheim in Mitt. Bad. Bot. Verein, for an 
entirely different rust. The present occasion is taken to rectify 
this long-standing mishap by suggesting another specific name. 
LIPOSPORA gen. nov. 
‘Cycle of development includes pycnia, aecia and telia. The 
characters are essentially those of the genus Tranzschelia with the 
uredinia omitted, the following species is taken as the type of 
the genus. 
Lipospora tucsonensis sp. nov. 
OQ. Pycnia chiefly epiphyllous, scattered over large areas, 
preceding or accompanying the aecia, hemispheric or conic, con- 
spicuous, chocolate-brown, subcuticular, large, 140-160 yp in diam- 
eter, 40-100 wv high; ostiolar filaments wanting. 
I. Aecia hypophyllous, thickly scattered over large areas, 
short-cylindric, large, 0.4-0.6 mm. in diameter; peridium ample, 
divided into few (often 4) widely spreading recurved lobes, white; 
peridial cells in face view angularly ellipsoid, 22-30 by 28-34 un, 
abutted or somewhat overlapping, the outer wall smooth, the 
‘inner wall evenly verrucose; aeciospores globoid, 16-20 by 18— 
22 u; wall colorless or pale golden-yellow, moderately thin, 1-1.5 yu, 
closely and minutely verrucose. 
