MYCETOZOA. 



Subclass I.— EXOSPOREAE. 

 Spores developed outside the sporophores. 



Order I. — Ceratiomyxaceae. 



Sporophores membranous, branched ; spores white, borne 

 singly on filiform stalks rising from the areolated sporophore. 



Genus L— CERATIOMYXA Schroeter in Engler & Prantl 

 Nat. Pflanzenfam., I. i. 16 (1889). Sporophores consisting 

 of membranous processes, either branching from a common 

 base or forking repeatedly or forming a network ; the 

 surface is mapped out into polyhedral areolae, from the 

 centre of each of which arises a slender 

 stalk bearing a single ellipsoid colourless 

 spore. — Ceratium Alb. & Schw. Consp. 

 Fung., 358 (1805) non Schrank (1793). 



Fig. 9. — Ceratiomyxa fruticulosa Macbr. 

 o. Clusters of sporophores. Twice natural size. 



b. Sporophore. Magnified 40 times. 



c. Four areolae of mature sporophore ; one spore still 



attached to its stalk, and another free. Magnified 



480 times. Fig. 9. 



1. C. fruticulosa Macbr. N. Am. Slime-Moulds, 18 (1899). 

 Plasmodium usually colourless. Sporophores white or 

 pinkish- yellow, membranous, forming a tuft of simple or 

 forked fasciculate branches 1 mm. or more high, -07 mm. 

 thick, or consisting of more or less anastomosing broad 

 bands, from which arise irregular lobes. Spores white, 

 smooth, ovoid, 10 X 6 to 13 X 7 /*.. — Byssus fruticulosus 

 MueU. in PI. Dan., fasc. xii. 6, t. 718, fig. 2 (1777)-. 

 Tremella hydnoidea Jacq. Misc., i. 145, t. 16 (1778). Clavaria 

 puccinea Batsch Elench. Fung., 139, fig. 49 (1783). C. byssoides 

 Bull. Champ., 209, t. 415, fig. 2 (1791). Puccinia byssoides 

 Omel. Syst. Nat., 1462 (1791). Isaria mucida Pers. in Roemer 

 N. Mag. Bot., i. 121 (1794). Ceratium liydnoides Alb. & 

 Schw. Consp. Fung., 358 (1805): Fr. Syst. Myc. iii. 294- 



