192 2. • Lee — Irish Sphagna. 23 



S. cyrabifolium Ehrh. — 1-4, 7, 8, 12, 13, 15-21, 27-29, 31-35, 37-39. 

 var. glaucescens W. — i (Gasking), 37 (Houston). 

 1. squarrosulum Pers. 



sub-f. pycnocladum W. — 37 (Houston), 

 f. brachycladum W. — 28 (Lee). 

 var. pallescens W. — 34 (Lee). 



f. laxum W. — 34 (Lee). 



f. eonfertum Wheldon — 2 (West), 25 (Houston), 34 

 (Lee), 

 var. flavescens W. — 2, 37 (Houston), 38 (Lett), 

 var. fuscescens W. — 37 (Houston), 38 (West). 

 S. subbicolor Ha:>)pe. — i, 27. (I have not seen Irish examples. — J. A. W. ). 

 S. medium Limpr. — i, 3, 8, 9, 10, 18, 25 (Houston) 27 (West), 30, 33-35, 



var. obscurum W. — 37 (Houston). 



var. roseum W. — 27 (West), 34 (Hunter), 37 (Lett). 



f. abbreviatum W. — 27 (West). 

 var. purpurascens W\ — 2=, (Houston), 27 (West), 

 var. versicolor W. — 37 (Houston). 



t. brachyorthociadum Wheldon — 28 (Lee). 



Rock Ferry, Cheshire. 



IRISH SOCIETIES. 



DUBLIN MICROSCOPICAL CLUB. 



January ii. — The Club met at Leinster House. P. A. Murphy 

 showed the formation of " secondary " conidia by the germinating zoo- 

 spores of Phytophthora infestans, the Potato Bhght fungus. This observa- 

 tion, which has not been previously recorded, is beUeved to be of con- 

 siderable importance in prolonging the existence of the fungus in the soil 

 and in facilitating tuber infection. 



Dr. G. H. Pethybridge exhibited " seeds " (mericarps) of Sheep's 

 Parsley {Petroselinum sativum), on the surface of which perithecia of the 

 common powdery mildew [Erysiphe Polygoni) were present in abundance. 

 Salmon, in his Monograph of the powdery mildews, states that this species 

 is found on no less than 602 different hosts, but Sheep's Parsley does not 

 appear to be one of them, and must therefore now be added to the list. 

 Examples of seeds carrying parasitic fungi either on their surfaces or in 

 their tissues are, owing to the investigations of recent years, better known 

 now than was formerly the case, but the exhibitor had not previously 

 met with any instance in which a powdery mildew was carried by seeds. 

 It would seem probable that the mildew might be distributed over con- 

 siderable distances in this way, especially seeing that the sample of seed 

 was a commercial one ; but actual proof that such seed when sown would 

 give rise to plants which become mildewed has not yet been obtained. 



