214 MICROSCOPIC FUNGI. 



smooth, yellowish-brown ; pedicels very long, thickened, hyaline, 

 persistent.— On the stems of Polygonum aviculare. October! 

 Common. 



Uromyees sparsa, Lev. Sandwort Rttst ; spots pallid ; 

 sori sub-rotund and oval, amphigenous and cauline ; epidermis 

 erumpent ; sporidia ovoid, brownish ; peduncles thickened, short. 

 — On Spergularia rubra. Swanscombe Marshes. June. 



Uromyees gramirmm, Cooke. Cocksfoot Rust ; epi- 

 phyllous ; sori oblong or coufluent and linear, convex, black and 

 shining, so as easily to be confounded on casual observation with 

 Dothidea graminis i at length bursting longitudinally ; sporidia 

 subglobose or ovate, tawny, with hyaline pedicels of variable 

 length. — On leaves of Dactyl) s g'omerata. 



Gymxosporangitjm, DC. 



Peduncles extremely Ion?, agglutinated by gelatine into a 

 tremelloid expanded mass. Spores uniseptate. 



Gymnosporangmm Juniperi, Lk. ; forming a soft gela- 

 tinous, irregular, orange mass ; spores ovate or subelliptic, filled 

 with subglobose granules. — On living twigs of Juniperus communis. 

 Said to be one generation of Rcestelia comuta which occurs on 

 leaves of Mountain Ash. 



Podisoma, Lk. 



Peduncles extremely long, agglutinated by gelatine into a com- 

 mon stem, spreading out above into a clavariaform mass ; 

 spores mostly uniseptate. — Berk. Outl., p. 331. 



Podisoma Juniperi, Fr. ; orange, clavariseform, somewhat 

 branched ; stroma simple ; spores very long, lanceolate, filled with 

 elliptic granules.— On living branches of Juniperus communis. 

 Not common. Said to be one generation of Rcestelia lacerata 

 which occurs on Hawthorn leaves. 



Podisoma Sabinse, Fr. ; red-brown, tuberculiform and 

 clavate, simple ; stroma obliterated ; spores obovate, uniseptate. 

 — On living branches of Juniperus Sabince. April. Said to be 

 one generation of Rcestelia cancellata which occurs on leaves of 

 the Pear-tree. 



Podisoma foliicolum, Berk. Is not a true species of 

 Podisoma. 



