358 HTPOG^I. 



Gen. 60. HYSTERANGIUM, Yitt. 



Peridium mdeliiscent, distinct, separable. Cavities at first 

 empty. Substance cartilagineo-glutinous. Spores minute. — 

 Vitt.Tuh.2-}.n. Berh.Ann.N.H.^iilp.^oO. OutLp.2d4:. Tul. 

 Hyp.p.^0. 



1050. Hysterangium nephziticuxn. BerTi. "Grey 



Hysterangium." 



Depressed, springing from a Tvbite, flat, branched, membranous 

 mycelium ; peridium firm, elastic, distinct, tomentose, substance 

 pale blue or grey, here and there greenish ; cavities radiating from 

 the base ; spores minute, oblong, pale clay-colour. — Ann. N. Hist. 

 xiii.^. 350,710. 298. 



Under trees. Feb. Clifton. 



About ^-1 in. across, gregarious, sometimes confluent, snow-white, downy, 

 seated on a ^^hite, flat, branched mycelium, which penetrates deeply into 

 the soil, and is attached at various points to the peridium ; peridium firm, 

 elastic, easily separating from the fructifying mass, tut in the process of 

 drying in young plants, adhering closely to it ; in older plants often separat- 

 ing entirely ; when rubbed or cut contracting sometimes a pale rufous tinge ; 

 substance firm, cartilagineo-glutinous, proceeding from the base and radiating 

 into the mass, of a pale blue or grey in parts, with a green tinge ; in very 

 young specimens there is a tinge of very pale pink j cells irregular, minute, 

 sometimes straight and radiating, clotlied with very pale, argillaceous, ob- 

 long spores, and emitting from their walls irregular threads. As the plant 

 dries the blue and green tints vanish almost entirely, and the mass is of a 

 very pale clay-colour from the spores. The central mass contracts extremely, 

 and the outer surface becomes more or less irregular. Smell at first like 

 that of some Il'ipiricvm, then exactly that of a decaying pufi"-ball. — M.J.B. 

 Spores -0128 mm. long, '0064 mm. broad (0004 X -00025 in.). 



1051. Hystexangium Thwaitesii. B. Sj- £r. "Thwaites's 



Hysterangium." 



Subglobose, white, rufous "when bruised; peridium membran- 

 aceous ; spores oblong, apiculate. — B. ^- Br. Ann. N.H. ser. ii. 

 fo/. ii.^. 267, 7Z0. 377. 



Under trees. Aug. Bristol. 



Mycelium white, fibrillose, not much disposed to form membranous ex- 

 pansions, spreading for some distance. Sporangium globose, or slightly 

 irregular, white, slightly silky, when rubbed or exposed to air assuming a 

 rufous tinge. Peridium membranaceous, not so i\iic)i. ^s in H . nejihriticum , 

 though, as in that species, it sometimes separates when dry; rufous when 

 divided. Cells brownish-olive ; spores oblong, apiculate, difl'erently shaped 

 from those of the other species.— J/./. jB. Spores "0192 mm. long, "0004 

 mm. broad (-0006 X -00025 in.). 



