449 
ON CERTAIN STRUCTURES IN PHYLLACTINIA Le&v. 
By Ernest §. Saumon. 
(Pirate 403.) 
n the course of prt on the Frysiphacea, I nes investigated 
ertain outg rowths the perithecium of Phyllactinia eet a 
remarks a esilahelthe — are taken direct from my notes. 
It has long been known that in the genus Phyliactinia certain 
strustanaes occur on the peleriers: as but of these the most diverse 
accounts have been given. “ ape extracts will show the views of 
previous authors on the subje 
Wallroth (3), in 1819, save aks specific name ‘‘ guttata’’ to the 
single species of Phyllactinia recognized (under the name of Alphito- 
morpha guttata) on account = the Sel yee pein? of a errands 
which is thus described :—‘‘ Hat nemlich das braune S um 
seine Vollkommenheit erreicht, ‘iain tritt aus dem ci sagt 
Theile der braunen Rindensubstanz der innere, kernartige Gehalt 
in Gestalt einer weissen, durchsichtigen, runden Blase frei hervor, 
bleibt auf dem Scheitel, den er erweitert hat, fosteitiien und 
trocknet so in ein weissliches Wesen zusammen, wihrend sich die 
Miindung des peridii externi um derselben zusammenzieht.” 
This boat gaan eee was generally accepted at the time (cfr. Link 
4) 
is 1842 Nageli (5) described and figured the outgrowths as a 
new parasitic fungus, Schinztia penicillata, which attacked the peri- 
Ww e 
undoubtedly what Niageli had under observation n (cfr. figs. 4 and 12). 
In 1844, Rabenhorst (6) created the genus Naegelia for the single 
Species ‘ Schinzia penicill. Whe without, however, adding anything 
to the knowledge on the subject. 
Bonorden was the next to investigate the structures, first in 
1851, and then more fully in 1857. In the first work (8) this 
author tata that Nageli’s ‘* Schinzia seca se ett be regarded 
as a minute parasitic fungus belonging t us Caeoma ; the 
(see fig. 12) was considered as not belonging to the fangus at all, 
but as being pro _ bly a piece of an insect’s leg. In 1857 (9) a 
filer account was given. Bonorden here stated that when the 
perithecium of "Phyliactinia is compressed the wall breaks, and 
JournaL or Borany.—Vot. 387. [Nov. 1899.} 26 
