38 A Monograph of the Myxogastres. 



often forming patches 6 9 cm. long and broad ; the hypothallus 

 although thin, is tough, and can be peeled off the matrix. 

 Sporangia about 5 mm. diameter and not quite so high ; before 

 dehiscence yellowish olive and resembling a crowded Pcrickaena. 



Tubulina speciosa, Speg. 



Sporangia densely gregarious, fasiculate, fascicles subcircular, 

 1 2 cm. long and broad, 1 1 mm. high, seated on a slightly 

 convex hypothallus ; sporangia cylindrical, apices rounded, 

 dehiscing irregularly, at first flcsli-colmir then cinnabar, shining ; 

 spores warted, rusty-ochre ; depressed, dry concavo-convex, with 

 a thickish margin. 



Spegazzini, Nov. Add. ad Myc.Ven. n.123; Sacc.,Syll.,7,n. 1393. 



On rotten wood of Pinus silvcstris. N. Italy. 



I have had no opportunity of examining the present species, 

 the spores of which are described as concavo-convex when 

 dry, but in all probability become spherical when moist. 



Tubulina stipitata, Rost. 



Hypothallus stem-like, often sulcate, spongy within; spo- 

 rangia crowded in a sub-globose head, cylindrical, apices 

 rounded ; walls very thin, evanescent ; mass of spores brownish- 

 umber ; spores globose, 4 5 /x diameter, about three-fourths of 

 the surface, with a regular small network, the 'remainder with 

 much larger meshes. Host., Mon., p. 223, f. 2 ; Cooke, Myx. Brit., 

 f. 2; Sacc., Syll., 7, n. 1392. 



Licca stipitata, B. and C., Grev. v. 2, p. 68. 



(Type in Herb. Berk. n. 10851.) 

 Exsicc. Fung. Cub. Wrightiani, 551. 



On dead wood, bark, &c. Stem 2 4 mm. thick and high, 

 urnber, porous within ; sporangia 1'5 2 mm. long. The spores 

 are globose when thoroughly soaked. 



Dr. G. A. Rex of Philadelphia has recently sent specimens 

 of the present species having the hypothallus very much 

 reduced, and also informs me that sessile forms are not un- 

 common, hence the specific distinction between T. cylindrica 

 and the present species turns mostly on spore differences. 



Cuba; Java; Bonin Islands; United States. 



