170 
ENDOSPORE.E. 
[trichia. 
differs from var. a. is the membranous sporangium-wall, which is 
entirely free fron\ granular deposits, and under a low magnifying 
power is seen to be embossed by the impression of the spores. This 
character, however, indicates so considerable a divergence from the 
type, that if further gatherings established its constancy this form 
should be marked as a distinct species. 
Ilab. On bark and dead wood. — /3. Batheaston, Somerset (B. M. 351) ; 
a. Lyme Regis, Dorset (L:B.M.139) ; a. Wanstead, Essex (L:B.M.1.59) ; 
/3. Menmuir, Brechin, Scotland (B. M. 365) ; a. France (K. 997) ; 
a. Germany (K. 1771); a. Poland (Strassb. Herb.); /3. Switzerland 
(Strassb. Herb.); /3. Sweden (K. 1702) ; (3. Norway (Christiania Herb.) ; 
p. Mass., U.S.A. (L:B.M.139) ; /3. Iowa (L:B.M.139) ; a. Montana 
(L:B.M.139) ; y. on fir and birch, Norway (L:B.M.li}9). 
8. T. erecta Rex, in Proc. Acad. Nat. Sc. Phil. (1890), p. 193. 
Plasmodium ? Total height 1 to 2 mm. Sporangia globose or 
subturbinate, stipitate or nearly sessile, scattered, 0*5 to 0'7 mm. 
diam., bright yellow, mottled with well-defined, dark brown 
angular patches ; sporangium- wall membranous, pale yellow, 
densely charged with brown angular matter in the dark patches. 
Stalk cylindrical, 0-5 to 1 mm. high, 0-2 to 0-3 mm. thick, dark 
brown, opaque. Capillitium of cylindrical bright yellow elaters, 
3-5 to 4 yu, diam., with short tapering ends; marked with four 
bands forming a close irregular spiral, beset with numerous spines. 
Spores yellow, delicately warted, 11 to 13 /u. diam. — Mass., Mon,, 
p. 184. 
Plate LXIL, A.—e. sporangia, x 20;/. elater, x 600 ; g. spore, x 600 
(United States). 
A single specimen of this species has been found at Lyme Eegis, 
agreeing in every respect with the type received from Dr. Rex, except 
that the stalk is very short, 0-5 mm. high. 
Rab. On dead wood, etc.— Lyme Regis, Dorset (L:B.M.140 slide) ; 
Philadelphia (L:B.M.140). 
9. T. fallax Pers., Obs. Myc, i., p. 59 (1796). Plasmodium rose- 
coloured or white, in rotten wood. Total height 1-5 to 3 mm. 
Sporangia turbinate, stipitate, gregarious, 0-6 to 0-8 mm. diam., 
shining olive or yellow-brown; sporangium-wall yellow, mem- 
branous, of two layers. Stalk cylindrical, furrowed, 0-5 to 1 mm. 
long, olive or dark brown ; hollow, filled to the base with spores 
or spore-like cells. Capillitium of cylindrical, smooth, olive- 
brown elaters, 4-5 to 5-5 /x diam., marked with four or five spiral 
bands, 0*5 to 1 /x broad, with intervals of 0-5 to 3 /a, gradually 
tapering into long slender points. Spores yellow-brown, minutely 
warted, or more or less distinctly reticulated on one side, 9 to 12 /a 
diam.— Rost., Mon., p. 243 ; Cooke, Myx. Brit., p. 61, figs. 221, 
222, 233, 235; Blytt, Bidr. K. Norg., Sop. iii. (1892), p. 12; 
Macbride, in Bull. Nat. Hist. Iowa, ii., p. 128; Mass., Mon p. 192. 
Arcyria^ecipiens Pars., in Usteri, Ann. Bot., xv., p. 35 (1795). 
Plate LXIL, k.-a. sporangia, x 20; elater, x 600; ^r. spores x 600 
(England) ; d. spore, reticulated on one side, spmulose on the other (Umtea 
States). 
