116 
FUNGI. 
Spiraea ulmaria , has spores in the same pustule, varying from the 
typical warted form to others perfectly smooth. Tulasne states, 
in a footnote, that he found, near Paris, a specimen of Triphrag- 
mium ulmarice , Lk., on the leaves of Spiraea filipendula , accom- 
panied by the same uredo and spermogonia as when growing ori S. 
ulmaria. This species was in all probability T. jilipendulce, Pass. 
The habit and appearance of the two so-called species is identical, 
and the differences in form and size of the spores from the same 
pustule of either species respectively is quite as great as the 
differences between the two given in systematic works. For the 
reasons given above the two are considered as identical. 
Txiphragmium isopyri, Moug. (Fig. 1). 
Teleutospore. Sori extending up to 4 m.m. diam., irregular, 
more or less bullate, black and somewhat powdery after the 
epidermis is ruptured, occurring on both sides of the leaf, also on 
the petiole ; spores most frequent consisting of three cells, the basal 
cell seated on an elongated hyaline pedicel that is attenuated down- 
wards, 32-47 p diam. ; spores formed of 2-3 superposed cells, 
separated by transverse septa, are not uncommon ; epispore clear 
yellowish-brown, ornamented with sparsely scattered, rather large, 
obtuse warts, usually fewest in number, or almost entirely absent 
from the basal cell. 
Triphragmium isopyri , Mougeot, in Moug. & Nestl. Stirp. 
Crypt., No. 892 ; Sacc. Mich., iv., p. 363 ; Sacc. Syll., vii., Part 
II., No. 2684. 
Exsicc. Moug. & Nest., Stirp. Crypt., No. 892 ; Roum., Fung. 
Gal. Gall., No. 319; Desm., Crypt. Fr., Ser. i., No. 1487. 
Hab. On living leaves and petioles of Jsopyrum thalictroides. 
Distrib. France ; Italy. 
The teleutospores of the present species bear a close resemblance 
to those of T. ulmarice , the warts on the epispore being usually 
more scattered than is general in the last-named species. I. 
isopyri is, however, quite distinct in habit, the sori being often 
large and effused or elongated on the petiole, black and powdery, 
and in general appearance resembling Erocystis anemones. 
Triphragmium setulosum, Pat. (Fig. 1). 
Teleutospore. Sori orbiculate, brown, about 1 m.m. diam , 
compact, scattered or in groups of 5-10, seated on a yellowish 
spot, occurring on both sides of the leaf ; th esori are surrounded 
by cylindrical, rigid, obtuse paraphyses of a yellowish brown 
colour, paler towards the apex, 35-80 x 10 p ; spores very 
variable in structure, most frequently consisting of three cells, 
two inferior, and separated by a vertical septum, one superior; 
epispore olive brown, smooth, excepting a small area round the 
germ-pore of each cell, which is minutely echinulate ; 25-40 X 
20-32 p ; pedicel 10-14 x 6 p, hyaline ; not unfrequently 
the two basal cells alone are present, sometimes one cell as in 
Uromyces. 
