334 A Monograph of the Myxogastres. 



umbilicate below, white, sprinkled with minute particles of 

 lime ; stem elongated, slender, equal, straight, pale yellow, longi- 

 tudinally wrinkled, filled with particles of lime, expanding at 

 the base into a minute circular hypothallus ; capillitium rather 

 dense, threads everywhere equal, about 3 \>. thick, combined to 

 form a loose, irregular network, nodes very rarely slightly in- 

 crassated, and containing a few minute, colourless granules of 

 lime; spores globose, dirty lilac, smooth, 10 fj. diameter. 



On wood. Venezuela. 



An apparently very distinct species, remarkable for the almost 

 total absence of thickened nodes or swollen interstitial portions 

 of the capillitium tubes, hence approaching the section Hemi- 

 didymium of Didymium. From 3 — 3"5 mm. high. 



Tilmadoche oblonga, Kost. 



Scattered or gregarious, stipitate ; sporangia cylindrical, obtuse 

 at both ends, apex hroadly and deeply umhilicate, tawny-olive, 

 sprinkled with pale particles of lime ; stem elongated, slender, 

 becoming thinner upwards, straight, or usually more or less 

 curved near the apex, reddish or yellow-brown, more or less 

 longitudinally wrinkled, filled with minute particles of lime ; 

 capillitium well developed, threads colourless, thin, with scat- 

 tered, small, interstitial, fusiform swellings containing colourless 

 or yellowish granules of lime, angles of bifurcation not in- 

 crassated ; spores dingy lilac, globose, mimitely vcrrucidose, 

 7 — 9 [i diameter. 



Tilmadochc ollonga, Rost., Mon. App., p. 13; Sacc, Syll., vii., 

 1, n. 1250. 



Trichamphora oblonga. Berk, and Curtis, Grev., vol. ii., p. QQ ; 

 N. Amer. Fung., n. 360. 



(Type specimen in Herb. Berk., Kew, n. 10,917.) 



Physarella mirahilis, Peck, Bull., Torr. Bot. Club., vol. ix., 

 p. 61, pi. 24, figs. 1—6 (wretched figures); Rev. Myc, 1882, 

 p. 172, tab. xxix., fig. 5 (after Peck's figures) ; Sacc, Syll., vii., 

 1, n. 1227. 



Exsicc.—EW'is, N. Amer. Fung., n. 1212. 



On wood, leaves, &c. United States, 



