GYMNOSPORANGIUM 305 
Aicidiospores. ABcidia clustered on yellow or orange thick- 
ened spots on the leaves, fruits, and stems, cylindrical, up to 
Fig. 230. G.clavariaeforme, Aicidia (Reestelia) on leaf, fruit and branch of 
Hawthorn (reduced) ; a, peridium x16, The fruit and gall on branch are 
shown as they appear when the peridia are old and the mass looks some- 
what like a honey-comb. 
24 mm. high, fimbriate above, at length lacerate to base, pale- 
brown; spores verruculose, brownish, about 28—30 4; pores 
8—10, scattered. 
Teleutospores. Spores collect- 
ed in long, cylindrical, conical, 
ribbon-like or tongue-shaped masses 
about 1 cm. long; which are at first 
firm, then gelatinous, finally horny 
when dry, pale-orange, protruding 
from fusiform swellings of the 
branches; spores fusiform, varied 
much in length and breadth, from 
thick-walled, 50—60 x 15—21 p to 
thin-walled, 100—120 x 10—12 y, 
rounded or attenuated above, 
hardly constricted, tapering gradu- 
ally below, smooth, dark yellowish 
or pale-brown ; germ-pores two in Fig. 231. G. clavariaeforme. 
7 - : Masses of teleutospores on 
each cell; pedicels hyaline, very branch of J. communis (re- 
long. duced); teleutospores x 600. 
a 
G. U. 20 
