88 
ENDOSPOREiE. 
[CHONDRIODERMA. 
wrinkled and irregularly reticulated, brownish-yellow ; the inner 
colourless ; the large columella is filled with crystalline deposits 
of lime. 
Eah. On fallen branches of Ojmntia. — Algiers (Durieu). 
This description applies to a dark form of 0. testacewm. 
22. C. Stahlii Eost., Mon., p. 185. Sporangia spherical, slightly 
flattened at the base, either dull, brownish -white, or shining and 
dull brown ; dehiscing either by a round central opening, or by 
an oblong fissure, or irregularly; stalk brown, shining; columella 
entirely wanting ; capillitium of dull violet threads 1-2 to 2-3 [x 
thick, at first simple, branching several times towards the tips, 
but not uniting into a net ; spores pale violet, faintly warted, 
9'2 yu, diam, 
ffab. Near Strassburg (Dr. Stahl). 
This description suggests a form of C. radiatum, in which the 
columella varies in shape and size. 
23. C. leptotrichum Eacib., in Eozpr. Mat.-Przyr. Akad. 
Krak., xii., p. 75 (1884). Sporangia vein-like, or irregular, 
flattened ; sporangium-wall simple, covered with small calcareous 
scales ; columella none ; capillitium of delicate threads 0-83 fji 
diam., forming a flaccid dense net, which can easily be drawn out 
of the plasmodiocarp ; spores blackish-brown, 12-5 to 13"2 {m 
diam., minutely warted. 
Hab. Near Cracow, Poland. 
The scaly wall of this species suggests that it may be a plasmodiocarp 
form of Didymium squamulosum. 
24. C. exiguum Eacib., in Hedw., xxviii., p. 118 (1889). 
Sporangia minute, stipitate, 0*3 to 0*4 mm. diam., hemispherical, 
flattened beneath, grey, iridescent ; stalk once or twice the height 
of the sporangium, very slender, furrowed, narrower and curved 
above, yellow, without deposits of lime ; sporangium- wall simple, 
with little lime, persistent and yellow beneath, hyaline and 
breaking irregularly above ; capillitium of slender hyaline threads 
0-4 fji wide, branched and anastomosing, expanded at the axils, 
but without lime deposits ; spores violet, minutely warted, 7 to 8 /a 
diam. Eesembling certain species of Tilmadoche, of which it may 
be a form with little lime. 
Hah. On bark. — Near Cracow. 
The description applies to Physarum nutans v. violascens. 
25. C. simplex Schroeter, Krypt. Fl. Schles., iii., p. 123 (1885). 
Sporangia globose, somewhat depressed, solitary ; sporangium- 
wall simple, brittle, bright chocolate-brown ; columella wanting ; 
capillitium radiating, repeatedly branched, violet ; spores violet, 
smooth, 7 to 9 /X diam. 
TIah. On old stumps. — Fiirstenstein, Silesia. 
