64 
ENDOSPOKEiE. 
[PHYSAEUM. 
43. P. lutecium Peck, in Rep. N. York Mus., xxx., p. 50, PI. ii., 
figs. 15-18. Sporangia small, closely gregaiious, sessile, yellowish 
inclining to tawny, ruptiu'ing irregularly ; fiocci abundant, 
yellowish- white. Spores globose, purplish-brown, 10 /a diam. 
Hab. On the living leaves of Cornus Canadensis L. — Adirondack 
Mts., N.Y. 
This description suggests a form of P. virescens Ditm. 
44. P. imitans Racib., in Rozpr., Mat.-Przyr. Akad. Krak., xii., 
p. 73 (1884), fig. 3 a 6. Sporangia hemispherical, umbilicate, 
greyish -white, erect or nodding, with the stalk 1 mm. high. 
Stalk a little longer than the sporangia, rigid, subulate, brownish- 
black. Columella none. Capillitium white, abundant, forming 
an irregular net ; nodes sometimes filled with lime, of various 
shapes. Spores violet, minutely warted, 9*5 to 10 /x diam. — Sacc, 
SyU., vol. vii., p. 348. 
Hab. On branches. — Poland. 
Var. flexuosum Racib., Hedw., vol. xxviii., p. 120. Plasmodio- 
^arps vermiform. Capillitium of the type of P. leucophcewm^ 
from which it differs in the distinctly warted spores. 
The spores of P. leucophceum vary in the extent to which they are 
warted, but are never quite smooth under a magnification of 1200 
diam. The description of P. imitans applies to that species. 
45. P. chlorinum Cooke, in Grev., v., p. 101, pi. 86, fig. 10. 
Sporangia scattered or gregarious, small, sessile, subglobose, 
greenish-yellow, simple, bursting in a stellate manner. Spores 
subglobose, black, opaque, 8 to 9 /x diam. 
Hah. On dead wood of Cocos nucifera L. — Demerara. 
In the absence of a type specimen, this description is too brief to 
be serviceable. 
SPECIES REFERRED TO TiLMADOGHE NOT MET WITH IN THE 
QUOTED COLLECTIONS. 
46. T. anomala Mass., Mon., p. 333. Gregarious; sporangia 
globose or slightly depressed, minutely umbilicate beneath, white, 
sprinkled with minute particles of lime ; stem elongated, slender, 
equal, straight, pale yellow, longitudinally wrmkled, filled with 
particles of lime, expandmg at the base into a minute circular 
hypothallus. Capillitium rather dense ; threads everywhere equal, 
about 3 /A thick, combined to form a loose irregular network. 
Nodes very rarely slightly incrassated, and containing a few 
minute, coloui-less granules of lime; spores globose, dirty lilac, 
smooth, 10 yu. diam. 
Hah. On wood. — Venezuela. 
47. T. cavipes Berk., in Grev., xi., p. 39. Mycelium reticulate, 
white sporangia, when young, flesh-colour, afterwards brick-red, 
