SPORES AN'D THALLIDIA. 



21 



as the case may be. Aspergillus niger (see fig. 193* and 193*), a Mould living 

 chiefly on the juices of fresh or preserved fruits, develops slender upright hyphaa 

 with swollen ends, which bear numbers of short peg-like processes — the sterig- 

 mata — from which moniliform series of from five to eight spores are abjointed in 



Fig. 195— Basitliumycetea. 



i Clavaria aurea. ^ Dcedatea guercina. ' Harasmiustenprrimus, * Marasmiuaperforans ^ Craterellus clavatns. * Antavita 

 phalloides. 7 Claviite basidia with flianientous sterigmata, from the emis uf which spherical spores are alijointeil (from the 

 hynieniura of Amanita phalloides). 8 Uydnuin imhricatum. 9 Polyporiis perennis. *, ^, *, *, ^, ^, *, * natural size; 

 'X250. 



rapid succession. These spores at first hang loosely together, and arc arranged 

 like strings of pearls, but collectively these rows of spores form a spherical head. 

 A shock of any kind, especially the disturbance occasioned by currents of air, will 

 cause a severance of the spores, and the entire sphere consequently falls to pieces. 



