MYXOMYCETE8. 73 



Stemonites amcena, Trent., p. 222 (1797). 

 Tricliia elongata, Sebum. Saell., 1464 (1803). 

 Arcyria ahitacea, Sebum. Saell., 1474 (1803). 

 Arcyria nutans, Grev. Fl. Ed., p. 455 (1824); Eng. Fl. v.,319 ; 

 Cooke Hdbk., No. 1173. 



Arcyria pollens, Wallr. in litt. 



Arcyria straminea, Wallr. Crypt. Germ., 2232 (1833). 



Arcyria mi-tans, c, minor. Bong., in Weinm, p. 609 (1836). 



89. Arcyria ferruginea. Sautcr. 



Sporangia ovate, stem usually sbort, standing on a narrow 

 substratum ; mass of spores and capillitium usually brick-red, now 

 and tben ferruginous, reddish-ochre or ochre ; capillitium not very 

 much entangled, tubes three-sided, with rounded angles, one side 

 wall very thick, border-like parallel to itself, provided with erect 

 thickenings, the two others furnished with irregular net-like delicate 

 reticulations ; its width exhibits very variable increase oscillating 

 even in the net of one sporangium, and mixed without considera- 

 tion ; spores coloured whilst living, '0083--011 mm. diam. Etfki. 

 Mon., 280. 



On rotten wood, &c. (Fig. 194.) 



Arcyria ferruginea, Sauter., p. 316 (1811). 

 Arcyria lateritia, DeBy. Mycet., 24 (1859), 

 Arcyria ferruginea, Fckl. Sym., p. 337 (1869) ; Berk. & Br. 

 Ann. Nat. Hist., No. 1603; Grevillea, v., p. 13. 

 Arcyria intricata, Rtfki. Mon. Supp., p. 37. 



ARCYRIA. 



A. Capillitium of numerous branches grown to 



the receptacle. 



I. Sporangia ovate or elongated. 

 Tubes of the capillitium of equal 



thickness throughout their whole 



length. ..... PUNICEA. 



Tubes of the capillitium expanded in 

 tbe centre of the sporangium, and 

 thinner at the margin. 



! Sporangia with a simple erect stem. CINEREA. 

 ! ! Several stems grown together in a 



bundle. ..... digitata. 



II. Sporangia spherical. . . POMIFORMIS. 



B. Lower arms of the capillitium grown in 



the midst of the cells filling the tube of 

 the stem. 



