GUIDE TO THE MODELS OF FUNGI. 



65 



GENUS XXXL—GEASTER Mich. 



In Geaster the peridium is double, the outer one distinct, per- 

 sistent, bursting and dividing 

 into several stellate lobes. The 

 Geasters are popularly termed 

 earth-stars or starry puff-balls. 

 There are twelve British spe- 

 cies ; three of these are repre- 

 sented by models. 



164. Geaster coliformis 

 Pers. — Known from the other 

 British species by its numerous 

 ciliated apertures and the slen- 

 der supports of the inner peri- 

 dium ; outer peridium multifid, 

 expanded. 



A rare species, found in sandy places 



Fig. 65. — Geaster limbatus Kr. 

 natural size.) 



(One-half 



165. Geaster limbatus Fr. — Outer peridium leathery, expanded 

 and multifid, while the inner is supported on a single, distinct 

 stalk, and the fimbriato-pilose mouth is elongated and acute, with a 

 slight depression at the base. 



One of the less common British species, found on the ground 

 among leaves. 



166. Geaster mammosus Chev. — Outer peridium multipartite, 

 rigid, hygrometric ; laciniae equal ; inner peridium unstalked ; mouth 

 ciliate, acutely conical, surrounded by a circular disc. 



The rarest and smallest of the British species ; on the ground. 



GENUS XXXII.—BOVISTA Dill. 



In Bovista the peridium 

 is papyraceous, or sometimes 

 corky, persistent ; bark distinct, 

 continuous, at length shelling 

 off; capillitium sub -compact, 

 equal, adnate to the peridium 

 on all sides. There are four 

 British species; one only of 

 these is represented by a model. 



Fig. 66. 



-Boviita plumbea Pers. 

 size.) Spores x 400. 



(Natural 



167. Bovista plumbea Pers 

 — Peridium papery, flexible, lead-coloured, bark sub-persistent at 

 base; mouth narrow; capillitium and spores brown. 



