The Myxomycetes of the United States. 397 



Genus 19. Lamproderma R. 

 85. Lamproderma physaroides (A. and S.). 

 Stemonitis physaroides A. and S., t. 11, f. 8. Schw., Am. Bor., 2346. 

 Spores -012— -014 mm . 

 On birch trunk. Car. (Schw., Curt.) ; Ohio (M. J. B.). 



86. Lamproderma columbina (Pers.). 



Physarum columbinum Pers., Syn., 173. Schw., Amer. Bor., 2284. 

 Physarum bryophilum Fr., Sys. Myc, iii, p. 135. 

 Spores 'Oil— •014 mm . 

 On dead wood. Car. (Schw., Curt.) ; Penn. (Michr.) ; Boston (Farlow). 



87. Lamproderma arcyrioides (Som.). 

 Stemonitis arcyrioides Sorumf., Tidschr. 

 On leaves, wood, etc. California (Harkness). 



88. Lamproderma Ellisiana Cooke. 

 Padhamia penetrans C. and E., Grevillea, V, p. 49. 

 On pine boards. N. Jersey (Ellis). 



This is certainly not a species of Badhamia, according to 

 the present estimation of that genus. The character of the 

 capillitium is that of Lamproderma; but the conglutination 

 of the spores is a feature not yet recognized in any other 

 species of Lamproderma. The specimens from which the 

 species was originally described were by no means good ; 

 hence it requires further investigation. 



Family 7. ENERTHENEM ACE^E. 



Genus 20. Enerthenema Bowm. 

 89. Enerthenema Berkeleyana Ktfki. 



Stemonitis mammosa Fr., Sys. Myc, iii, p. 161. 

 Enerthenema elegans Berk., Ann. N. H., No. 338 (not Bowm.). 

 Spores -0086— •01 mm . 

 On boards, wood, etc. Car. (Curt., Rav.). 



