I 



badhamia] physaraceae 31 



Sporangia globose on long membranous stalks ; spores 

 nearly smooth, blackish. 6. B. magna ■ 



Sporangia subglobose, sessile or with firm yellow or 

 brown stalks ; spores closely spinulose, dark purple- 

 brown. 10. B. macrocarpa 



Sporangia subglobose, slightly depressed, sessile 

 or stalked ; stalks black below, grey above ; spores 

 violet-brown. 11. B. affinis 



Sporangia discoid, depressed, on short black stalks ; 

 spores violet-brown. 12. B. orbiculata 



Sporangia subglobose, sessile ; spores violet-brown, 

 nearly smooth ; plasmodium white. 



13. B. panicea 



c. Sporangia chalk-white, sessile, hemispherical or forming 



plasmodiocarps ; spores smooth, ellipsoid. 



14. B. ovispora 



d. Sporangia flesh-coloured or purple-brown — 



Sporangia sessile, without a true columella. 



15. B. lilacina • 



Sporangia stalked, stalk continued into the sporan- 

 gium as a columella. 16. B. rubiginosa . 



1. B. capsulifera Berk, in Trans. Linn. Soc, xxi. 153 

 (1852). Plasmodium chrome-yellow. Sporangia globose or 

 P3 T riform, usually sessile, 1 to 1-5 mm. diani., greyish-white ; 

 sporangium-wall hyaline, with lime-granules sparsely dis- 

 tributed. Stalk when present membranous, straw-coloured, 

 usually short. Capilhtium a network of flat bands with 

 broad thin expansions at the angles ; lime- granules evenly 

 but not densely distributed throughout. Spores dark purple- 

 brown, adhering in clusters of 8 to 20, spinulose, more 

 strongly warted on the outer surface as they he in the 

 cluster, 11 to 13/xdiam. — Rost. Mon., p. 141. Macbr. N. 

 Am. Slime-Moulds, 68. Sphaerocarpus capsulifer Bull. Champ. 

 139, t. 470, fig. 2 (1791). Physarum hyalinum Pers. in 

 Roemer N. Mag. Bot., i. 88 (1794)? P. cinereum Link in 

 Berl. Mag, hi. 27 (1809) ? P. capsuliferum Chev. Fl. Paris, i. 

 339 (1826). P. vancellatum Walk. Fl. Crypt. Germ., 351 

 (1833) ? Trichia capsulifer DC. Fl. Fr., ii. 254 (1805). 

 Badhamia hyalina Berk. I.e. ; Rost. Mon., p. 139 ; Lister 

 Mycetozoa, 30. B. varia Mass. Mon., 319 (1892), in part. 



PI. 3.— a. sporangia ; 6. fragment of capillitium with a cluster of spores and one 

 free spore ; c. spore ; (England). 



This species forms small plasmodia. It is subject to considerable 

 variation in the shape of the sporangia, and the clustering and markings, 

 of the spores. In some gatherings the spores are greyer and not so 



