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 Badhaniia, 

 but the plant is a true Lam'prodermct, and quite distinct from 

 a small species of GomatricJia, with which it is mixed. 



Ellis appears to have confused the true Lamprodcrma of 

 Cooke with the ComatricJia 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 round the stem; columella short, thick, wrinkled; 

 capillitium very dense, springing from apex of columella, the 

 main branches 3 — 5 /u thick, simple for a very short distance, 

 then h'anching and anastomosing to form a small-meshcd, very 

 irregular dense 7ictioork ; 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 ivarted, 9 — 10 \j. 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 liypothallus, 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, Rost. 

 Sporangia spherical, green, becoming blackish, or with a 



