Ophiotheca. 133 



Perichaena irregularis, Berk, and Curt., Grev., vol. ii., p. 68 ; 

 Sacc., Syll., n. 1439. 



(Type in Herb. Berk., Kew.) 



On bark. Lower Carolina. 



Sporangia up to 1 mm. diameter, often much crowded and 

 consequently irregular in outline. Resembling Perichaena 

 depressa in general appearance, but distinguished by the distinct 

 spines uniformly and rather thickly scattered over the capillitium 

 threads. 



Ophiotheca nitens, Mass. 



Sporangia single or few gathered in clusters, globose-pyriform, 

 sessile, or with a short stem, splitting irregularly, greyish-brown 

 with a fine violet tone of metallic lustre, '5 mm, broad. Wall 

 single, almost without particles. Tubes of the capillitium long, 

 slightly branched, by irregular enlargements fastened to the 

 wall, unequally and very delicately spinulose, equally broad 

 throughout, 1-^-1*5 /x broad. Spores delicately spinulose, yellowish, 

 hyaline, 10 12 p. diameter. 



Perichaena nitens, Raunkier, Myx. Dan., p. 107, t. 2, f. 11. 



On bark of oak and fir, and on decayed leaves of pine. 

 Denmark (Sealand, Jutland). 



B. Threads of elaters with raised bands which may be short 

 and wart-like, or combined to form rings or a network. 



Ophiotheca reticulata, Mass. (figs. 199, 200). 



Plasmodiocarp venulose, sinuous or anastomosing to form an 

 irregular network, clingy ochraceous- umber, wall containing 

 numerous masses of lime inside ; mass of capillitium and spores 

 pale ochraceous-umber ; capillitium scanty, threads forming a 

 very loose network, 3 5 p. thick, densely covered with short, 

 straight, or curved raised bands and rounded warts; spores 

 globose, with minute, scattered warts, 13 14 p. diameter. 



Licea reticulata, B. and Br. 



Perichaena reticulata, Rost., Mon. App., p. 35 ; Sacc., Syll., 

 vii., 1, n. 1442. 



