347 
NOTE ON THE BRITISH GYMNOSPORANGIA. 
By Cuarztes B. Piowriext. 
Tur Ngee iba en are a in this bet d by three 
Sepa viz., G. sabine, G. juniperinum, and G. riaforme 
Since their life-history was worked out tte (Ersted in 1868. when 
he iBiowed sa were connected as teleutospores with — 
cancellata, R. cornuta, and R. lacerata, they have received ¢ mpara- 
tively little eidcbeit antil Rathay undertook an extensive pom of 
Beetes with them, the results of which he published in 1882; 
which it appears that ee respective a Aare occur upon 
cal host plants, as under 
Re Ahadcapora: 
Crategus a 
Gymnosporangium clavarieforme. ee ie oe ies 
Keiban: ER es 
Gymnosporangium sabine ... ... Pyrus communis. 
Sorbus Aucuparia 
Aronia roto 
Gymnosporangium juniperum ... { Pyrus 
Cydonia <cisk 
Sorbus Aria. 
ing the years 1882, 1888, and 1884 I have performed a 
Sate of cultures with aioe which ee Brees s results 
as far as they have gone, except in one ins nd, as Rathay 
does, that oes a clavar ar ree G. rerinns pode. their weidio- 
st 
confounded; nor am I at the present ti ion to point 
out the specific differences of the siontuspukde: err the 
resultin ia are sufficiently distinct in of th 
g ecidia ar 
alsa a the form of their ee a the colour of the spots from 
sha 
with the Rastelia which grew in close proximity to a savine-bu 
Near which no or juniper grew. * hope to be able to clear this 
matter up next year, and possibly may thus be enabled to throw 
Some light upon he: life. history of the Varta on Mespilus germanica, 
& fungus which is not uncommon in this neighbourhood a 
that Rathay was unable to produce artificially. My present idea is 
at it is connected shim this second species of Gy sacs 
en 
