316 THAXTER. 



Endogone radiata nov. sp. 

 (Figs. 47-51.) 



Fruiting body variously lobed, whitish, becoming yellowish brown 

 in alcohol, about 10 X 5 mm., the dried specimen about 5 mm. 

 Gleba tough, dense, nearly homogeneous, the closely coherent rather 

 slender elements hardly distinguishable, yellowish with a fibrous 

 appearance; the peridial layer rather thin, darker brow^nish, the 

 superficial hyphae usually producing terminal and intercalary vesicu- 

 lar enlargements with distinguishing septa. Spores scattered, some- 

 times rather distant, sometimes wdth a slight tendency to grouping, 

 rarely spherical, usually with the longitudinal axis considerably 

 greater than the transverse, oblong, elliptical or subpiriform, often 

 irregular from pressure, the long axis more or less coincident with the 

 radius of the fruiting body, 68 X 38-85 X 50 ju, borne terminally on 

 often clearly recognizable simple hyphae, somewhat stouter than 

 those which compose the substance of the gleba. The spore-wall 

 shows no visible distinction between exospore and endospore and is 

 from 4-5 /x thick: the contents rather finely granular, pale brownish 

 yellow. 



Under the leaf cover in spruce woods; Gerrish Island, Kittery 

 Point, Maine; Intervale, N. H. ; August, 1896 and 1901 : in Sphagnum, 

 Little Metis, P. Q. E. C. Jeffrey. 



This species was first taken for E. microcarxM : but is certainly 

 distinct. Its spores are rarely spherical although they appear to be so 

 when cut transversely; the wall is comparatively thin, and is not 

 \'isibly double. The radiate arrangement of the spores, which are 

 firmly embedded in a dense fibrous matrix, seems to be characteristic; 

 but is lost as soon as the section deviates from the radial direction. 

 In the specimens from Kittery and Little Metis, the surface of the 

 peridium shows numerous short projecting filaments with swollen 

 terminations, and intercalary vesicular cells of no great size. At 

 Kittery Point this species was found in company with E. incrassata 

 which was supposed, at the time, to be the same. It is thus not now 

 possible to say whether it had the same alliaceous odor. None was 

 noticed in the Intervale rnaterial. Among the rather numerous 

 individuals collected by Professor Jeft'rey, there are no individuals of 

 E. incrassata, as far as has been ascertained. x\ny connection be- 

 tween the two is thus problematical. 



