TRICHAMPHORA.] PHTSARACE^. 89 



26. C. mutabile Schroeter, I.e., p. 123. Sporangia sessile, irre- 

 gular in shape, hemispherical, depressed, or curved and elongated 



1 to 3 mm. long, 1 mm. broad ; sporangium-wall shell-like, brittle, 

 clear greyish-brown ; columella strongly developed, following the 

 shape of the plasmodiocarp, bright red-brown ; capillitium of 

 slender violet threads, with scattered knot -like thickenings ; 

 spores dark violet, spinulose, 11 to 14 /x diam. 



Hob. On dead wood. Oppeln, Silesia. 



This description applies to C. mveum v. deplanatum. 



27. C. ochraceum Schroeter, I.e., p. 124. Sporangia sessile, 

 globose, or half-ring shaped, 1 to 2 mm. long, 1 mm. broad, 

 crowded ; the outer sporangium- wall ochre-brown, opaque, break- 

 ing up irregularly, the inner delicate, colourless; columella 

 wanting; capillitium well-developed, of smooth violet threads 



2 to 3 /x diam., branching and combined into a dense net; spores 

 dark violet, faintly warted, 9 to 11 /x diam. 



Hab. On liverwort. Riesengebirge, Silesia. 

 The description suggests a form of C. testaccum. 



SPECIES EXCLUDED FROM THE GENUS. 



C. Alexandrowiczii Host. = Didymium squamulosum Fr. 



C. Berkeleyi Host. = Trichamphora pezizoidea Jungh. 



C. Cookei Host. = Didymium squamulosum Fr. 



C. dijforme Host. = Didymium difforme Duby. 



C. liceoides Host. = Didymium difforme Duby. 



C. Mueller i Host. = Trichamphora pezizoidea Jungh. 



C. pezizoides Host. = Trichamphora jiezizoidea Jungh. 



G. Zeylanicum Rost. = Trichamphora pezizoidea Jungh. 



Genus 10. TRICHAMPHORA Junghuhn, Fl. Crypt. Jav., 

 p. 12 (1838). Sporangia discoid or saucer-shaped, stipitate ; 

 sporangium-wall membranous with evenly distributed deposits of 

 innate lime-granules. Capillitium of colourless branching threads, 

 without lime. 



1. T. pezizoidea Jungh., I.e. (1838). Plasmodium ? Total height 

 1 to 2 '5 mm. Sporangia discoid or saucer-shaped, stipitate, erect 

 or somewhat inclined, scattered, 0-8 to 1'3 mm. broad, 0'2 to O4 

 mm. thick, pale grey ; sporangium-wall membranous, with thin 

 innate deposits of lime equally distributed, breaking up into 

 areolre and remaining attached to the capillitium after the dis- 

 persion of the spores. Stalk subulate, longitudinally striate, 

 orange-red, translucent. Columella none. Capillitium of branch- 

 ing, anastomosing colourless threads, with broad expansions at the 

 axils and at the attachment to the sporangium-wall, without lime- 

 knots. Spores dull violet-brown, more or less spinulose, 9 to 15 

 //, diam. Chondrioderma pezizoides Rost., Mon., p. 424, fig. 122. 

 Physarum Muetteri Berk., M.S. in Herb. Chondrioderma Mueller i 



