never noted the least indication to turn reddish (*). Besides, S. 
rubigenum grew ‘ ‘ on logs of Pinus con tortus, summit of Sierra 
Nevada.” Our S. acuminatum always grows in the ground. 
246—HYPOBLEMA. 
The specimen on which the genus Hypobleina is based is in the 
New York Botanical Gardens labeled Lycoperdon lepidophorum. The 
genus differs from Calvatia in having a distinct thin membrane lining 
the peridium. We believe the plant has three peridia.. The exo- 
peridium similar to the cortex of Calv-atia, remains of which are seen 
as warts on the specimens. (Plate 14, fig. 1); a thick endoperidium 
like that of Mycenastrum; and a thin, membranaceous, third peridium 
covering the gleba. This third peridium is very evident in the speci¬ 
men, and can be plainly seen in our photograph. If we are mistaken 
as to these warty remains representing a cortex, we still think the 
genus is distinct from Calvatia, for then the exoperidium is thick and 
hard and the endoperidium a thin,, distinct membrane, lining the 
exoperidium, just the reverse of the peridium structures of Calvatia. 
247—HYPOBLEMA LEPIDOPHORUM. 
(Plate 14.) 
Plants depressed globose, from 10 to 20 cm. in diameter. Peri¬ 
dium 1 mm. thick, hard, breaking into irregular fragments like a 
Calvatia, marked with darker, wart-like, raised blotches, the remains 
(I think), of a cortex. Lining membrane, soft, paper-like, a dark, 
thin membranaceous layer, not adherent to the peridium, and entirely 
covering the spore mass (in all the specimens I saw). While it is 
more persistent than the thick peridium, it undoubtedly finally breaks 
up into fragments that fall away. The plants have no sterile base (f). 
Spore mass, dark olive. Capillitium colored, consisting of slender 
interwoven branched threads, of a nearly uniform (5mic.) diameter. 
Spores globose, echinulate, 5-6 mic. 
This plant in its internal structure is the same as the little- 
known genus Lanopila, if I understand that genus. It differs from 
all other genera in the nature of its peridium layers as previous 
described. 
SYNONYMS. 
The plant was described by Ellis as Lycoperdon lepidophorum, (f) and compiled 
into Saccardo as Bovista lepidophorum. It was well described by Morgan as 
Calvatia pachyderma, but Morgan was mistaken in referring to Peck’s Lycoperdon 
pachyderma, Ellis’s Lycoperdon lepidophorum. The two plants are very different 
in their peridia, their spores and their capillitia. The plant is figured in Gast. 
Genera as Hypobleina pachyderma. 
(*) Hollos states “when the fresh specimen (S. acuminatum), is touched with the finger it 
acquires rose-red, sometimes blood-red spots.” Our American plant does not. 
(t) So Morgan and Ellis state, we have never seen a specimen cut open. 
(J) The specimens were collected at Huron, Dakota, by Nellie E. Crouch, and are preserved 
in the Ellis collection. They are labeled Eycoperdon lepidophorum, and there is a note by Ellis, 
“ Morgan probably correct in considering this only E. pachyderma Pk.” In reading over Peek’s 
description, I noted several discrepancies and wrote to Prof. Peek, who kindly sent me type 
material of his Eycoperdon pachyderma. It is a Calvatia, but has neither the spores, capillitia nor 
peridia of Ellis's plant. 
140 
