SYNOPSIS OF MYCETOZOA 



181 



a. 



either in clusters or densely compacted ; capillitium a network 

 of delicate threads containing lime-knots. 



A. Sporangia stalked (occasional sessile forms) : — 

 a. Stalks charged with lime throughout — 



Capillitium lax — 



Stalk white, sporangia grey, lime-knots large white, colu- 

 mella none P. leucopus Link 



Stalk white, rarely rufous, sporangia tawny yellow, globose, 

 columella conical P. melleum Mass. 



Stalk olive or yellowish, short or absent, sporangia olive 

 or yellow, globose, ovoid or forming plasmodiocarps, 



columella none P. variabUe Rex 



Stalk and sporangium pale yellow, columella large hemi- 

 spherical . . P. luteo-album List. (18, p. 130"). 



(1 



Stalk white or brownish below, sporangium white, lime- 

 knots small, white . • . . P. globuliferum Pers. 



Stalk, sporangium, and lime-knots red P. pulchripes Peck 

 ,, ,, ,, mouse-brown 



murmum 



If ff |f 



purple 



>> it 



ff if ff 



P. pulcherrimum Berk. & Rav. 



„ yellow, robust 



P. citrinum Schum. 



straw-coloured, slender 



P. tenerum Rex 



Stalk and sporangium white, capillitium with a central 

 ball of lime P. compactum List. 



b. Stalks without lime, or with deposits in the wall only — 



a. Lime-knots purple-red, sporangium rose-red 



P. roseum Berk. & Br. 



/?. Lime-knots and sporangium violet-purple 



P. Newtoni Macbr. 



y. Lime-knots orange, sporangium glossy, mottled blue and 



red, stalk red or orange ... P. psittacinum Ditm. 



■ 



8. Lime-knots orange, sporangium bronze, stalk black, spores 



reticulated . P. dictyospermum List. (19, p. 112). 



i. Lime-knots yellow or orange ; sporangium yellow, orange, 



or grey — 



Sporangia subglobose, stalked ; capillitium lax, lime-knots 

 fusiform P. viride Pers. 



Sporangia contorted, stalked, usually clustered ; capillitium 

 lax, lime-knots fusiform . P. polymorphum Host. 



Sporangia subglobose, stalks red-brown, slender, lime-knots 

 angular P. Berkeleyi Host. 



