‘ 
Special M orphology and Classification. 267 
\ 
1. By Deviston . 7.0. by the contents of a sporangium 
breaking up entirely into spores (in the Mucorini, Fig. 396), 
or being transformed by segmenta- 
tion into a sporidesmium (Fig. 397). 
2. On basidia ; te. on the apex ay 
(oe 20a hn, 1.) OF -onetiic: Taore?* 
filiform or pointed protuberances, iS \ 
sterigmata (Fig. 398 111.) of special 
cells. Such spores are called dasz- 
diospores,  acrospores, OY 
exospores; and they may 
either be formed simulta- 
neously or may become de- 
tached successively. The 
former mode occurs in the 
Asancim (Fig. °°'393° 11., 
mor 205 the: latter. : m 
Penicillium (Fig. 1, p. 7). 
Those that become de- 
Fic. 396.—Ascophora Mucedo: 1. an entire 
plant with six sporangia in different stages 
of development (strongly magnified) ; II. 
single spcrangium with spores 6 (x 200). 
tached in succession, or abstricted, usually form threads, 
the younger spores placed on the apex of older ones, and 
III. 
ale 
Fic.397-—-Compound Fic. 398.—I. c Basidiospores of an Agaric: a cells of the 
spore (sporides- hymenium; 4 basidium (x 300): II. s basidiospores of 
mium) of Spheria Geaster hygrometricus ; m mycelial filament; 4 basidium _ 
Scirpi (after De (after De Bary; x 390) ; III. a@ three basidia or sterigmata 
Bary; X 390). of Exidia spiculosa ; 6 basidiospore (strongly magnified). 
the oldest on the basidium. In a few cases, as Cystopus 
=| 
