Lamproderma. 99 



(Type in Herb., Kew.) 



About 1 mm. high ; scattered. " On pine boards not much 

 decayed, white at first." (Ellis.) 



United States. 



The clustered spores probably suggested the genus Badhamia, 

 but the plant is a true Lamproderma, and quite distinct from 

 a small species of Comatricha, "with which it is mixed. 



Ellis appears to have confused the true Lamproderma of 

 Cooke with the Comatricha in the N. A. F., Ser. II. 



Lamproderma robusta, Ellis and Everh. 



Sporangia globose or slightly contracted below, stipitate, 

 blackish-purple, dull ; when in perfect condition covered with 

 a very delicate bloom, lower portion usually remaining like 

 a frill , v round the stem ; columella short, thick, wrinkled ; 

 capillitium very dense, springing from apex of columella, the 

 main branches 3 5 p. thick, simple for a very short distance, 

 then branching and anastomosing to form a small-meshed, very 

 irregular dense netwoi*k ; threads tapering from the base, mostly 

 flattened, angles often rounded, with scattered interstitial 

 swellings, brownish-purple at the base, becoming paler upwards, 

 attached, at numerous points to sporangial wall;- stem equal 

 in length to sporangium or a little longer, blackish, smooth, 

 equal, springing from a hypothallus; spores globose, dirty 

 brownish-purple, minutely warted, 9 10 ^ diameter. 



Lamproderma robusta, Ellis and Everhart. 



(Described from portion of type communicated by Mr. 

 Wingate.) 



On wood. United States. 



A very distinct and beautiful species, gregarious, springing 

 from a common hypothallus, 2 2'5 mm. high. The sporangium 

 is covered with an exceedingly thin layer of some substance 

 resembling the bloom on a plum, which may be lime ; it cracks 

 and breaks up into angular patches in water. 



Lamproderma Schimperi, Host. 

 Sporangia spherical, green, becoming blackish, or with a 



