Heterotrichia. 139 



irregular bands, incrassated at the nodes ; spores globose, smooth, 

 6 8 /u. diameter. 



Lachnobolus incarnatus, Schroeter, Kr. Fl. Schles., 110; Sacc., 

 Syll, vii., 1, n. 1478. 



Lachnobolus circinans, Host., Mon., p. 281. 



Lachnobolus congesta, B. and Br., Ann. Nat. Hist., n. 1604, 

 t. 9, f. 2 ; Cke., Myx. Brit., p. 74 ; Sacc., Syll., n. 1481. 



On rotten wood, especially pine. Britain (King's Cliffe) ; 

 Germany ; Switzerland ; Lapland. 



(Rostafinski's Synonyms.) 



4 



Arcyria circinans, Fr., Stirp. Femsj., p. 83; Fr., S. M., iii., 



p. 177 (1825). 



Lachnobolus circinans, Fr., Fl. Scan., 356 (1835). 

 Lachnobolus Sauteri, Host., in Fckl. Symb., 2, p. 76 (1873). 



Licea incarnata, A. and S., Consp., 109, t. 10, f. 6 (1805). 

 Lycogala incarnatum, Swrtz, Vet. Ac. Handl., 112 (1815). 

 Perichaena incarnata, Fr., S. M., iii., p. 193 (1829). 



Lycopcrdon pinetum, Batsch., Elench.. p. 155, n. 29 (1783). 

 Physarum congestum, Somf., Fl. Lap., p. 241 (1825). 

 Perichaena congesta, Fr., S. M., iii., p. 192 (1829). 

 Licea congesta, Wllr., Fl. Or. Germ., n. 2108 (1833). 



HETEROTRICHIA, Mass. (Nov. Gen.). 



Sporangia densely crowded or scattered, stipitate ; wall single, 

 thin, upper portion disappearing at maturity, leaving the basal 

 portion as a calyculus ; stem rilled with large, thick-walled cells 

 that are sub-angular from mutual pressure; these become smaller 

 upwards, and pass gradually into normal spores; capillitium 

 free from wall of sporangium, its lower branches passing between 

 the cells filling the stem, central portion composed of very thin 

 tubes anastomosing to form a loose, irregular network ; towards 



