BA S IDIOM YCE TES 



399* 



tissue, with numerous compartments. To scatter the spores the stalk 

 elongates enormously, while it increases- in thickness at the same time ; 

 the peridium bursts at the apex, and the glebe is separated from the 

 inner peridial membrane and ele- 

 vated on the summit of the stalk. 

 When the spores are scattered, 

 the conical membrane (so-called 

 pileus] remains with the honey- 

 comb-like structure on its outer 

 surface attached to the apex of 

 the spongy stalk. 



In Clathrus the development 

 of peridium and glebe agrees 

 with Phallus, but instead of a 

 stalk a net-like structure serves to 

 burst the peridium and elevate 

 the glebe. 



Such forms as Mitremyces 

 (Nees ab Esenb.), Tulostoma 

 (Pers.), Polysaccum (DC.), and Sphaerobolus (Tode) exhibit other and 

 remarkable types of development. Though they do not properly fall 

 under any of the sections dealt with, they may be regarded as more 

 or less divergent from the Lycoperdaceae. 



FIG. 331. Aseroe ritbra Berk. Mature specimen. 

 The peridium is attached below ; the glebe is in 

 the middle of the radiating expansion (half natural 

 size). (From de Bary, after Berkeley.) 



LITERATURE. 



De Bary Zur Kenntniss einiger Agaricinen (Bot. Zeit., 1859). 



Bonorden Beobacht. li. d. Bau d. Agaricinen (Bot. Zeit., 1858). 



Bonorden Mycologische Beobacht. (Phallus, Sphserobolus) (ibid., 1851). 



Bonorden Die Gattungen Lycoperdon u. Bovista, &c. (ibid., 1857). 



Brefeld Bot. Untersuch. ti. Schiinmelpilze, iii. (Leipzig, 1877). 



Brefeld For further development of Brefeld's views on the classification, &c., of 



Basidiomycetes (with much research on the lower forms) see Unters. aus dem 



Gesammtgebiete der Mykologie, Heft vii., 1888. 

 Corda Icones Fungorum Prag (1837-1854). 

 Eidam Die Keimung der Sporen u. d. Entstehung d. Fruchtkorper bei d. Nidu- 



larieen (Cohn's Beitrage, ii.). 

 Fischer Zur Entwick. d. Gasteromyceten (Sphetrobolus, Mitremyces) (Bot. 



Zeit., 1884). 



Hartig Wichtige Krankh. d. Waldbaurne (Berlin, 1874). 

 Hartig Die Zersetzungserscheinungen d. Holzes d. Nadelholzbaume u. d. Eiche 



(Berlin, 1878). 

 Hesse Mikroskop. Unterscheidungsmerkmale d. typischen Lycoperdaceengenera 



(Pringsh., Jahrb. x.). 

 Hesse Keimung d. Sporen von Cyathus striatus (ibid., x.). 



