l8o The Scottish Naturalist. 



in South Kincardineshire, and I have also seen it, though rarely, 

 near Aberdeen. Its claims to be ranked as Scottish are doubtful, 

 though it seems moderately well established in some quarters. — 

 Ed. Scot. JVat.] 



ON DOASSANSIA ALISMATIS Cornu, ENTYLOMA CANESCENS 

 Schrot., and E. CALENDULAS Oud. 



In the last number (pp. 124- 1 25) of this Magazine, I stated that I was not 

 aware that these species had been previously recorded from the British islands. 

 I have recently had the opportunity of examining the specimens included under 

 the group Protomyces in Kew Herbarium, among which are Mr. Berkeley's 

 own types. From these specimens I have ascertained the following facts of 

 interest : — ■ 



Protomyces Alismatis B. and Br., represented by specimens on Alisma 

 Plantago, from Fern (Rev. J. Fergusson), is certainly JDoassansia Alismatis 

 Cornu. There are also specimens in Berkeley's Herb, from Bungay, and from 

 Sexton's Wood near Bedingham, on the same sheet, in Alisma leaves. Dr. 

 Cooke tells me that he believes that Aicidium incarceralum B. and Br. (Cooke's 

 Microscopic Fungi, last edition, p. 200, described from examples from Bungay, 

 but of which no type exists in the Herbarium), is identical with Prot. Alismatis 

 B. and Br., and thus with D. Alismatis Cornu. The only point that causes me 

 to feel doubt in this respect is that sE. incarceratum is said to have a specially 

 thin peridium, which does not exactly suit with the Doassansia in structure. 



Protomyces macularis Fckl. (Symb. Mycol., p. 75; Physoderma maculare 

 Wallr.) is represented in the Kew Herb, by a specimen from Siberia (1417 

 Thumen's Mycotheca Univ. ) on a leaf of Alisma Plantago. So far as can be 

 judged from an inspection of the leaf, without making a section, it does not 

 differ from D. Alismatis Cornu. 



On Sagittaria sagittifolia L. pustules occur, clearly of a fungus very similar 

 to those on Alisma, and possibly of the same species ; though an examination 

 of sections would be needed to permit of certainty on this point. The pustules 

 are rather smaller, and more crowded it may be ; but no other difference can be 

 detected with a lens. In Mr. Berkeley's Herb, the two plants are laid on the 

 same sheet as belonging to the same species Protomyces Alimatis B. and Br., 

 and were found in the same localities in England. The fungus on Sagittaria 

 has been named Protomyces Sagittaria by Fuckel (Symb. Myc. p. 75, Cooke I.e., 

 p. 227), but is evidently a Doassansia. Dr. Cooke assures me that, from an 

 examination of type-specimens, he has convinced himself that Uredo Sagittaria, 

 "Westendorp and Wall., is identical with P. Sagittaria Fckl. It maybe men- 

 tioned in passing that Uredo Sagittaria Cooke, on a Sagittaria from New 

 Jersey, and Phyllosticta Sagittaria Rabenh (553 Rabh. Fungi), are abundantly 

 distinct from the above. 



The synonymy will thus be seen to be much involved, and it will be well, 

 therefore, to sum up the results arrived at above : — 



Doassansia Alismatis Cornu is Protomyces Alismatis B. and Br. ; is most 

 probably P. macularis Fckl., and is possibly sEcidium incarctratum B. and Br. 

 all occurring on leaves of Alisma Plantago L. 



Doassansia (? Alismatis Cornu) on leaves of Sagittaria sagittifolia is 

 Protomyces Alimatis B. and Br. pro parte, Protomyces Sagittaria Fckl., and 

 Uredo Sagittaria West, and Wall, (non Cooke). 



Protomyces Ferg-ussoni B. and Br. is represented in Berk. Herb. (No. 

 5247) by a spot in a leaf of Myosotis from New Pitsligo. So far as can be 



