78 
ENDOSPORE/E. 
[CHONDRIODERMA. 
3. C. globosum Rost., Mon., p. 180, fig. 138 (1875). Plasmo- 
dium white, among dead leaves. Sporangia globose, sessile, 
crowded, 0-5 to 0"8 mm. diam., seated on a .strongly developed white 
or cream-coloured hypothallus, smooth, white or cream-coloured; 
sporangium-wall of two layers, the outer composed of globular 
lime-granules 1 to 2 /a diam., separating widely from the 
membranous inner layer. Columella hemispherical or subglobose, 
often minute, white or pale flesh-coloured. Capillitium of slender, 
irregularly branched, and anastomosing pale purplish threads. 
Spores dark purplish-brown, spinulose, 10 to 14 diam. — Cooke, 
Myx. Brit., p. 39 ; Mass., Mon., p. 206 ; Macbride, in Bull. Nat. 
Hist. Iowa, ii., p. 147. Diderma globosum Pers., in Rom., N. Mag. 
Bot., i., p. 89 (1794). Chondrioderma affine Rost., Mon., App., 
p. 18 ; Mass., Mon., p. 210. G. simulans Rost., Mon., App., 
p. 20 ; Mass., Mon., p. 209. Diderma crustaceum Peck, in Rep. 
N. York Mus. Nat. Hist., xxvi., p. 74. Chondrioderma crus- 
taceum Berlese, in Sacc, Syll., vol. vii., p. 373 ; Mass., Mon., 
p. 215. 
Plate XXX., A. — a. sporangia, x 20 ; Z». capillitium, with fragment of 
sporangium-wall and spores, x 280 ; c. spore, x 600 (Poland, Rostafinski's 
type). 
The capillitium of this species often encloses particles of Hme in 
expansions towards the base of the threads. C. globosum is closely 
allied to C. spumarioides, differing chiefly in the large and dark spores. 
Rostaflnski's type specimen of C. globosum from near Warsaw, in 
Strassb. Herb., has dark spinulose spores 11 to 13 /x diam. ; his type 
specimen of C. affine Rost. from near Warsaw is the same form. C. 
sbmdans Rost. is described as differing chiefly from C, globosum in the 
rough spores, 12-5 n diam. ; as the spores of the type specimen of 
C. globosum correspond with this definition, C. simulaus cannot be 
considered a separate species. 
Hah. On dead leaves, etc. — France (Paris) ; Strassburg (L:B.M.54) ; 
Poland (Strassb. Herb.) ; Italy (B. M. 625) ; Iowa (B. M. 816). 
4. C. testaceum Rost., Versuch, p. 13 (1873). Plasmodium? 
Sporangia sessile, subglobose, depi-essed on a broad base, some- 
times confluent, 0-8 mm. diam., smooth, dull flesh-coloured or 
pale pinkish, often becoming bleached ; sporangium-wall of two 
layers, the outer thin, brittle, egg-shell-like, composed of globular 
lime-granules, separating freely from the more persistent, pinkish- 
grey, membranous inner layer. Columella large, convex or 
hemispherical, together with the base of the sporangium flesh- 
coloured or reddish-hrown. Capillitium of delicate, faintly 
purplish, branching flexuose threads. Spores pale violet-brown, 
almost smooth, 7 to 8 diam.— Rost., Mon., p. 179, figs. 135, 136 ; 
Mass., Mon., p. 210; Macbride, in Bull. Nat. Hist. Iowa, ii., p. 148. 
Didymium testaceum Schrad., Nov. PI. Gen., p. 25 (1797). 
Diderma testaceum Pers., Syn., p. 167. Diderma s^ihlateritium 
Berk. & Br., in Journ. Linn., xiv., p. 82. Chondrioderma sub- 
lateritium Rost., Mon., App., p. 19; Mass., Mon., p. 211. 
Diderma Cubense Berk. & Curt., in Journ. Linn., x., p. 347. 
