TRICHOGASTRES. 341 



to the middle, in nearly equal, acuminate lacinise, inner 

 stratum very thick, evanescent ; inner peridium sessile, 

 flaccid ; mouth determinate, piano-conic, ciliato-fimbriate ; 

 columella rather long, clavate. — Jltf. Ltjcop. t. 1, /. 2; 

 Payer,/. 519, 520; GreviUea, ii. ^a 35, p. xiv. 



On the ground. 



In infancy this Geaster resembles an antique jar with a 

 narrow mouth, hence the specific name ; spores spherical, 

 in this differing from the majority of Geasters, '00012" dia. 



76. BOVISTA, Dill. (p. 301). 



1. B. nigrescens, P. (p. 301). 



2. B. plumbea, P. (p. 301). 



3. Bovista ovalispora, Cke. and Mass. ; subglobose ; 

 sessile; cortex thin, whitish or ochraceous, subpersistent ; 

 peridium thin, flaccid, smooth, dull lead-colour, dehiscing 

 by an irregular apical rupture ; capillitium and spores 

 umber in the mass ; threads 12-16 mm. at the thickest 

 part, much and vaguely branched, tapering to long slender 

 tips, dirty umber by transmitted light ; spores oval, 6x4^ 

 mm., brownish umber, with a narrow hyaline border 

 caused by the thickened epispore ; pedicels long and stout, 

 hyaline. 



On the ground. Kew. 



Differing from B. plumbea in being 2 inches or more 

 large, in the oval spores, and from B. nigrescens in the 

 oval spores and absence of the purple tinge in the capillitium 

 and spores. 



4. B. olivacea, Cke. and Mass.; globose, 1 2—2 in. dia., with 

 a short, stout, rooting base ; cortex very thin and evanescent ; 

 peridium thick, at first soft and pliant like leather, becom- 

 ing brittle and breaking away in patches, pale ochraceous, 



