44 LIFE-HISTORY OF EZCIDIUM ON PARIS QUADRIFOLIA. 
. Date of 
wo. | Tefting | nt inftea, | Dats of | it 
1217.* | Puccinia Paridis.| Arum maculatum. 26 April. 
1218. ” » Allium ursinum, 26 April. 
1219. ” ” Convallaria majalis. 26 April. 
1220. ” ” Paris quadrifolia. 14 May. | 25 May. 
1221, » » Paris quadrifolia, 14 May. | 25 May. 
1222, | Acidium Paridis.| Phalaris arundinacea. | 11 June. | 1 July. 
JEcIDIOsPORE= Aicidium Paridis. 
Urepospors£.—Sori parvi, utrimque foliorum superficiebus 
erumpentibus, obscure aurantiaci vel rubello-flavi: spore globose 
vel subglobose, coloris expertes, scite echinulate, contentis 
aurantiacis; magnitudine 30-35 p. 
TELEUTOSPORZ.—Sori minuti, punctiformes vel lineares, ali- 
quando confluentes, primo epidermide tectis, nigri: spore quoad 
figuram variabiles, subcuboidales, cylindrice, subtriangulares ; 
brunnex, leves granulateve; apicibus amplificatis, truncatis, 
planis, interdum oblique complanatis, raro cuspidatis, sessilibus, 
constrictione plerumque levissima, variabili; magnitudine 40- 
50 p longit., 18-25 p latit. 
Uredospores.—Sori small, on both surfaces of the leaves, dark 
crange or reddish yellow : spores globose or subglobose, colourless, 
finely echinulate, with orange contents; 30-35 mk. 
Teleutospores.— Sori minute, punctiform or linear, sometimes 
confluent, at first covered by the epidermis, black: spores 
variable in form, subcuboid, cylindrical, subtriangular ; brown, 
smooth but granulated; summits thickened, truncate, flattened, 
sometimes obliquely, rarely pointed, sessile, constriction variable, 
generally very slight ; 40-50 x 18-25 mk. 
‘Ecidiospores on Paris quadrifolia. 
Uredospores and teleutospores on Phalaris arundinacea. 
Near Carlisle. 
* The numbers refer to the number of the experiments in my notebook of 
uredine cultures.—C, B. P. 
