241 



Dilophospora Graminis, Desm. On the inflorescence of Tlolrus 

 mollis, Arboretum, (t % Nicholson. 



This fungus is a true parasite, and is not uncommon on th» 

 living inflorescence of various kinds of grass. Infection occurs 

 when the inflorescence is quite young, and enclosed within tin 

 sheath, and when it emerges it is more or less completely covered 

 with a dense black felt of hyphae, in which the numerous minute 

 perithecia are embedded. It sometimes proves very destructive 

 to cereals, more especially wheat. 



Pyrenochaeta Phloxidis, Massee. 



Perithecia dense gregaria, in maculis elongatis nigrh-antihus 

 atra, nidulantia, globosa, erunipentia, membnmacea, ostiolo pertusa, 

 setis nigris, rigidis, praecipne ad verticem vestitis,^ 130-180 /* 

 diam. Sporae continuae, ellipsoideae, hyalinae, 3 x 3 /a 

 basidiis hyalinis bacillaribus suffultis. 



On stems of Phlox just above the ground-line. This parasite 

 quite destroyed a bed of Phlox ; the foliage at first assumed a 

 greenish-yellow sickly tinge, and afterwards wilted and fell, 

 followed by the breaking of the stem near the base. 



» 



Most nearly allied to Pyrenochaeta J'ero.r, Saec, which differs in 

 the hyaline spines springing from the upper portion of the 

 perithecium, and the much larger spores. 



Phoma Callunae, Karsten. On dead heather .stem, Arboretum, 

 G. Nicholson. 



Pestalozzia Callunae, Cesati. On dead heather stein, Arboretum. 

 G. Nicholson. 



Pestalozzia truncata, Lev. On dead bark of hawthorn and oak. 

 Arboretum, G. Nicholson. 

 Lepothyrium ilicinum. Sacc. On (had fallen lean i of Quercut 



Ilex, Arboretum, G. Nicholson. 



Vermicularia corvina. Karsten. On chips Queen's Cottage 

 Grounds, G. Nicholson. New to Britain. 



Coryneum microstictum, Berk. ,1- Bro w. On dead bramble 



stem, Queen's Cottage Grounds, G. Nicholson. 



Coryneum pustulatum, Peck. On dead brwwhea of horse chest- 

 nut, Queen's Cottage Grounds, G. Niekaltm. 



Ascochyta Cookei, Massee. 



Perithecia dense gregaria, inordinata, in maculis elongatis 

 lutescentibus nidulantia, subepidermica, glob ia, ostiolo erum- 

 pentia, 70-80^ lata, basi hyphis mycelialibus septatis, fuhgineis 

 praedita. Sporae hvalinae, medio septatae, eylindrae^o-clavatae, 



40 x 4-5 fi. 



On living leaves of "Sweet William"— Dianihm barbatus, L., 



At. C. Cooke. 



This species was collected in Kew Gardens by Dr. Cooke several 

 years ago, and placed in the herbarium under the name of 

 Ascochyta Dianthi, Berk., presumably on account of a very close 

 superficial resemblance between the two species; the spores 



