Arcyria. 143 



Fckl., F. Rhen., 1441 ; Karsten, Fung. Fenn., 378 ; Ellis, N. 

 Amer. Fung., 1114; Klotzsch, Herb. Myc., 671; Eav., Fung. 

 Car., 80 ; Wentendorp, Herb. Crypt. Belg., 81 ; Desm., Cr. Fr., 

 Ser. L, 1510. 



On rotten wood. Britain (Poole, Woolwich, Kew, Chester, 

 Scarboro', Carlisle, Aboyne, N. B.) ; Europe ; S. Africa ; Ceylon ; 

 S. Australia ; New Zealand ; United States ; Canada ; Brazil. 



Gregarious, often springing from a common hypothallus, 

 1-5 3 mm. high. Distinguished by the capillitium being 

 attached to the cup-like permanent portion of the sporangial 

 wall, and the prominent, flattened half-rings arranged in a loose 

 spiral on the threads of the capillitium, which are otherwise 

 smooth. The threads of the capillitium are often compressed 

 or triangular, but not unfrequently terete. 



(Rostafinski's Synonyms.) 



Clathroides purpureum, Mich., t. 94, f. 1, 1. c. (1729) ; Hall., 



pi. 1, f. 6 (1742). 



Clathrus pediculatus, Guett., Obs. 1, 16 (1747). 

 Arcyria pedicula, Hill, p. 47 (1751). 

 Clathrus denudatus, Linn., Sp. PL, 1179 (1753). 

 Trichia, Hall, No. 2164, t. 48, f. 6 (1768). 

 Mucor dathroides, Scop. Carr., ii., 492 (1772). 

 Mucor pyriformis, Leers. Fl. Herb., 1135 (1775). 

 Clathrus pedunculatus, Batsch. FL, p. 141 (1783). 

 Lycoperdon rufum, Dicks Cry., fasc. i., p. 25 (1785). 

 Stemonitis denudata, Rehl. FL Cant. (1786). 

 Embolus crocatus, Batsch., t. 30, f. 176 (1786). 

 Stemonitis crocata, Willd. Fl. Ber., 1189 (1787). 



Stemonitis coccinea, Roth. Fl. Germ., i., 548 (1788). 



Trichia denudata, Vill. Fl. Dauph., 1060 (1789) ; Purt. Mid. 

 FL, t. 24, f. 2 ; Sow., t. 49. 



Trichia graniformis, Hoffm. V. Cr., i., p. 3 (1490). 



Trichia cinnabaris, Bull., t. 502, fig. 1, b. c. (1791). 



Stemonitis crocea, Gmel. Sys., 1467 (1791). 



Trichia rufa, With. Arr., iii., p. 478 (1795). 



