British Gastromycetes. 8 1 
American species, has a similar habit, but differs in the silky 
peristome not being sulcate. 
B. Endoperidium sessile. 
Geaster mammosus, Chev. (Fig. 78). Exoperidium hygro- 
metric, split nearly to the base into 7-10 acute segments ; 
endoperidium sessile, pale ; peristome conical, acute, fim- 
briato-ciliate, surrounded by a pale, narrow, silky circle ; spores 
in the mass dark brown with a tinge of purple, globose, 
warted, 4-6 ; columella short, threads of capillitium fusiform, 
simple, 6-7 [x at thickest part. 
Geaster mammosus. Chev., FI. Paris, p. 359 ; Fries, 
Syst. Myc. iii, p. 17?; Vitt, Mon. Lyc. p. 155, t. 1, f. 9; 
Berk., Eng. Flora, p. 301 ; Berk., Outl. p. 300 ; Cke., Hdbk. 
n. 1076 ; De Toni, Revist. Geast. n. 33, pi. ii, G ? ; Sacc., Syll. 
vii, p. 85 ? ; Wint., Kr. FI. p. 914 ; Quel., Enchirid. p. 238. 
Lycoperdon recolligens , Sow., t. 401. 
On the ground, specimen from Sowerby’s collection, now in 
Herb. Berk. Kew! — Europe. 
Exoperidium from 1-2 inches across when expanded. It 
is doubtful whether Fries had the right plant in view, as he 
states that the exoperidium is revolute when dry, whereas in 
Sowerby’s specimen and figure quoted above the exoperidium is 
strongly involute when dry, as is also shown in Vittadini’s figure. 
De Toni’s description in Rev. Geast., repeated in Sacc., Syll., 
is still more doubtful, as the spores are stated to be from 2~3’5 
\x in diameter. The North American specimens under this 
name are certainly not the true species. The present plant 
bears some external resemblance to G. hygrometricus , but 
is readily distinguished by the columella and conico-acute 
peristome surrounded by a pale circle. 
Geaster fimbriatus, Fr. (Fig. 77). Exoperidium flaccid, 
split into 5-15 subequal, acute segments, inner layer soon 
disappearing ; endoperidium subglobose, sessile, mouth inde- 
terminate, piloso-fimbriate ; spores in the mass blackish 
umber, globose, minutely verruculose, 3-4 /a ; threads of 
capillitium simple, fusiform, 6-7 \x at thickest part. 
G 
