I902 Bullock-Webstkr. — Characece from Co. Monagha7i. 145 



occurrence of N^ flexilis var. nidifica Wallni., in the neigh- 

 bouring County of Cavan adds a third to the two Irish records 

 which Mr. Praeger was able to chronicle in 1900. 



A word about these two plants The variety nidifica was 

 first recorded for the British Isles in 1882, when Mr. Sturrock 

 found it in Marlee L,och, East Perth. Since that year there 

 has been no other record of it till Mr. Praeger collected it two 

 years ago in Roscommon and Monaghan. It has never so far 

 been observed in England. The yield in Lough Sillan was 

 small, but I was able to gather sufficient to make eight or ten 

 sheets of it. 



Nitella mucronata was first collected in the British Isles in 

 the early part of the last century by Mr. Borrer in Sussex. It 

 was not till some seventy years later, in 1882, that it was again 

 observed — this time in the Ouse, at Bedford, by Mr. C. H. 

 Davies and Mr. James Saunders, and Mr. Saunders has since 

 found it in the river Ivel in the same county. In 1892 Mr. 

 Druce found it in abundance in a ditch at Godstowe, Oxford- 

 shire. Four years later I collected some few specimens in a 

 clay pit at Ely, Cambridgeshire, and in the following year 

 found one solitary plant in the river Eittle Ouse, Norfolk. 

 Mr. Boswell's herbarium shows it to have been collected (but 

 not at the time recognized) in Fleet Pool, Hampshire, in 1873. 

 It has been recorded from no other county in the British 

 Isles. Its distribution outside the British Isles is wide. It is 

 recorded from Germany, Austro-Hungary, Russia, Switzer- 

 land, Scandinavia, Denmark, Netherlands, Belgium, France, 

 Portugal, Italy, Roumania, and Turkey. 



One word of warning to my brother botanists. Do not be 

 disappointed if the waters round Carrickmacross yield not a 

 single specimen of Nitella imicronata next season. It is one 

 of the most fugitive of our Characese. I think I am right in 

 saying that it has never been collected a second time from 

 those stations which I have quoted above. L. Monalty could 

 have supplied the proverbial cart loads of it last August, but 

 it is more than probable that many years may elapse before a 

 single plant appears there again. 



I must not fail to express a word of appreciation of the kind 

 consideration extended to me during my visit. To do any 

 careful work amongst the Characeae a boat is indispensable. 



