; S ENDOSPOREAE [PHYSARUM 



If 'ib. On dead leaves and twigs. — Xear Bristol (B.M. 116); Essex 

 (B.M. 1249); Bedfordshire (B.M. 1248); France (K. 28); Germany 

 (B.M. 510); Finland (B.M. 450); Bohemia (B.M. 446); Italy (K. 

 1345); Portugal (B.M. 2289); Ceylon (B.M. 451); Java (Herb. 

 Ponziu) ; .Japan (l'...M. 1993); Iowa (B.M. 811); London, Canada 

 (B.M. 1797); South Carolina (B.M. 932); Colorado (B.M. 2290); 

 Chili (Paris Herb.). 



47. P. bogoriense Racib. in Hedw., xxxvii. 52 (1898). 



Plasmodium ? Sporangia scattered or gregarious, sessile on a 

 narrow base, ovoid and somewhat angular, or forming 

 flexuose plasmodiocarps, varying in colour, reddish-brown 

 buff, yellow or nearly white ; outer sporangium-wall smooth, 

 white on the inner side, densely charged with white lime- 

 granules; this layer is usually areolated with pale lines of dehis- 

 cence and at length separates in reflexed lobes from the more 

 persistent membranous inner wall. Capillitium consisting 

 of numerous large white smooth-walled rounded and branching 

 lime-knots connected by slender hyaline threads. Spores 

 pale violet-brown, nearly smooth, 8 /x diam. — Petch in 

 Ann. Perad., 338. Diderma pallidum Berk. & Curt, in Grev., 

 ii. 52 (1873) undescribed. Physarum 'pallidum Lister in 

 Journ. Bot., xxxvi. 117 (1898) ; Sturgis in Colorado Coll. 

 Publ.. Sci. Ser., xii. 20. 



PI. 50. — a. sporangia (Antigua) ; b. capillitium and spores, with fragment of double 

 sporangium-wall ; c. spore. 



Closely allied to P. sinuosum, q.v. 



Hab. On dead leaves. — Portugal (B.M. 2291) ; Cameroons, West 

 Africa (B.M. 2292); Ceylon (Peradeniya Herb.); Java (B.M. 2294); 

 Brisbane (B.M. 535) ; South Carolina (B.M. 849) ; Colorado (B.M. 2293); 

 Antigua (B.M. 1653) ; Brazil (B.M. 2295). 



48. P. bitectum Lister. Plasmodium white. Sporangia 

 scattered, sessile, and either subglobose or obovoid, 

 0'6 to 0*8 mm. diam., or forming curved and flexuose plas- 

 modiocarps 2 to 6 mm. long, rounded, or laterally compressed, 

 smooth, white or buff ; sporangium- wall double, the outer wall 

 densely charged with white lime-granules, free and deciduous 

 above, recurved and persistent below ; inner wall smooth, 

 membranous, pale purplish, more persistent. Capillitium a 

 network of hyaline threads, with numerous variously shaped 

 large smooth-walled white lime-knots. Spores 10 to 12 jx 

 diam., purplish-brown, spinulose, with a paler and smoother 

 area of dehiscence. P. Diderma Lister (non Rost.) in Journ. 

 Bot., xxix. 260 (1891), & Mycetozoa, 57; Sturgis I.e. 



PI. 51. — a. sporangia (Bedfordshire); b. capillitium and spores, with fragment of 

 double sporangium-wall ; c. spore. 



This abundant species is allied to P. sinuosum, from which it differs 

 in having a smooth purplish inner sporangium-wall and rougher spores 

 smoother and paler on one side. In the first edition of the present 



