224 МВ. А, D. COTTON ON CRYPTOGAMS 
same pinkish-yellow pileus and general appearance. Mrs. Vallentin notes 
that it has a yellowish stem, and a further difference from that species 
is found in the almost constantly present prongs at the apex of the cystidia. 
The prongs vary from 5-10 и long, and have not been observed as regularly 
present in any other species of Psathyrella which I have been able to 
examine. 
CYSTOPUs CANDIDUS, Lér. in Ann. Sei. Nat. sér. 3, viii. (1847) p. 371. 
Uredo candida, Pers., Berk. in Hook. f. Fl. Ant. ii. p. 451. 
Е. Falklands ; on Arabis macloviana, Sulivan, d'Urville (teste Cric). 
DisrRIB. Probably cosmopolitan. 
Hooker's specimen, received from Captain Sulivan, has been re-examined, 
and no difference can be detected between it and common European species. 
The plant has also been recorded from various parts of the American con- 
tinent as well as from Africa, and it is probably cosmopolitan. Massee 
remarks:—‘ The Kerguelen Land Cabbage (Pringlea antiscorbutica), although 
exempt from the fungus (С, candidus) in its native land, could not be kept 
in cultivation'at Kew owing to attacks of this parasite? (* Mildews, Rust, and 
Smuts,’ 1913, p. 11). 
PuccinrA Утоьж, DC. Fl. Fr. vi. p. 62. 
E. Falklands ; on Viola maculata, Port Stanley, А. W. Hil. W. Falk- 
lands, Vallentin. 
DısTRIB. АП continents except Australia. 
Же stage only. Several species of Uredineæ are known on Viola ; 
and Гат indebted to Mr. W. B. Grove for confirming the identification of 
this specimen, and also for critical advice on the three following species. 
ÆCIDIUM Praria, Spey. Fungi Fuegiani, р. 58. no. 147. 
E. Falklands ; Port Stanley, 4. W. Hill. W. Falklands, Vallentin. 
DISTRIB. Staten Island, Falkland Islands. 
A small number of the æcidia of this fungus, discovered by Spegazzini on 
Staten Island, were detected on the material of Pratia repens collected both 
by Mrs. Vallentin and Mr. Hill. 
Оверо CHILIOTRICHI, Cotton, sp. nov. 
Sori hypophylli, in greges rotundatas 3-4 diam. collecti, in tomento 
plantæ nutrice plus minusve nidulantes. Uredospore longe pedicellatæ, 
flavescentes, globose vel ovate, 25-30 x 18-22 p, echinulatæ, 
In foliis Chiliotrichi amelloidei. Roy Cove, Shallow Bay, Saunders Island, 
Vallentin, 58. 
No rust-fungus has previously been described as occurring on Chiliotrichum, 
which is a composite allied to Olearia, and confined in its distribution to the 
southern part of South America. | 
