Tilmadoche. '327 



tubes swollen ; spores dark violet, agglutinated in clusters, 

 0125 '018 mm. 



Badhamia fulvella, Berk., Trans. Linn. Soc., xxi., p. 154; 

 Cooke, Myx. Brit., p. 27; Sacc., Syll., vii., 1, n. 1166. 



On dead wood. Britain (East Bergholt, Suffolk). 



I have seen no specimen of the present, hence cannot add to 

 Berkeley's description. 



TILMADOCHE, Rost. 



Sporangia stipitate, wall thin, single, with a thin deposit of 

 lime in the form of minute, irregular lumps, either continuous 

 or most frequently in patches, dehiscing in an irregularly 

 reticulate manner ; stem elongated, slender, rilled with irregular 

 particles of lime, becoming longitudinally wrinkled when dry; 

 columella absent; capillitium well developed, threads slender, 

 attached to the wall at various points, combined to form an 

 irregular network, nodes small, scattered, mostly elliptical, filled 

 with granules of lime. 



Tilmadoche, Rost, Mon., p. 126; Cooke, Myx. Brit, p. 21; 

 Sacc., Syll., vii., 1, p. 359 ; Zopf, p. 148. 



The present genus is characterized amongst its allies by the 

 thin sporangial wall furnished with a scanty deposit of lime 

 in the form of minute, amorphous granules, the slender threads 

 of the capillitium with small, sparingly scattered elliptical nodes 

 containing lime, and the elongated, slender stem filled with 

 lumps of lime. Closely allied to the genus Physarmn, with 

 which it is connected by a form of Tilmadoche nutans, having 

 the capillitium threads stouter, and the nodes larger and more 

 numerous than usual. Another form of the same species having 

 the capillitium very slender and without nodes connects with 

 the Hemididymium section of Didymium. 



Tilmadoche nutans, Rost. (figs. 19 21). 



Sporangia spherico-depressed, more or less umbilicate below, 

 wall thin, greyish or white, with a thin layer of minute, amor- 

 phous lumps of lime, becoming irregularly cracked ; stem slender, 



