RETTCULARIA.] 
IlBTICULARIACEiE. 
161 
2. R. lobata Lister. Plasmodium watery-white, in decayed 
wood, ^thalia small, consisting of irregularly clustered and 
confluent sporangia, or spreading over the substratum in flattened 
lobes about 0-5 mm. diam., shining, iridescent, rusty-brown ; 
walls of the jethalium membranous, soon evanescent ; sporangium- 
walls within the jethalium rising from the hypothallus in 
membranous folds and merging into a scanty network of more 
or less delicate flattened threads ; together with the spores 
rusty-brown. Spores sharply reticulated on two-thirds of the 
surface, faintly and irregularly reticulated on the remaining 
third, 6 to 10 /A diam. Reticularia Rozeana List., in Journ. Bot. 
(1891), p. 263 (non Eost.). 
Plate LIX., B. — d. sethalium, x 10 ; <?. capillitium, x 80 ; /, spores, 
X 600 (England). 
This species has been gathered in four consecutive years on a 
Spanish chestnut stump in Wanstead Park, Essex ; it has been found 
near Woking and at Leighton Buzzard, and has also been collected by 
Mr. Camm near Birmingham. Examples of the form were submitted 
to Dr. Rex, who compared them with American gatherings of 
Enteridium Bozeanum Wing., and pronounced it to be a new species 
distinguished by the Reticularia character of the £ethalia and by the 
more uniformly reticulated spores. Specimens of E. Rozeanum^ from 
Philadelphia, Ohio^ and Iowa, confirm the opinion of Dr. Rex, and 
correct my notice in the Journal of Botany {I.e.) giving the English 
gatherings as " Reticularia Rozeana Rost.," but the two species are 
closely allied. 
JETab. On dead wood. — Wanstead, Essex (L:B.M.132) ; Leighton, 
Beds (L:B.M.132) ; Woking, Berks (L:B.M.132) ; Birmingham 
(L:B.M.132). 
SPECIES NOT MET WITH IN THE QUOTED COLLECTIONS. 
3. R. fuliginosa Berk. & Br., in Journ. Linn. Soc, xiv., p. 82 
(1873). Effused, thin, dark olive-brown, silky; flocci purple-black ; 
spores globose, purple-black, smooth. 
Hab. On palm leaves. — Ceylon. 
SPECIES EXCLUDED FROM THE MYCETOZOA. 
R. affinis Berk. & Curt., R. apiospora Berk. & Br., R. atro-rufa 
Berk. & Curt., R. polyporiformis Berk., R. pyrrhospora Berk., 
and R. venulosa Berk. & Curt. 
Subcohort lll.—CALONEMINEjE. Sporangia simple, except 
m Lycogala ; capilHtium always present, forming a system of 
uniform threads; spores yeUow, red, or grey. 
Order I.— Trichiace^. Capillitium consisting of free elaters, 
or combined into an elastic network, with thickenings in the form 
of spirals or complete rings. 
U 
