184 





Phoma pollens, Berk. & Curt, (South Carolina, Herb. Berk. 

 no. 5015 !) seems to be only a youni* state of this species, at least 

 so far a^ the specimens on Vitis and Ampelopsis are concerned. 

 The form on Celastrus scandens, referred to it by Berkeley 

 (Pennsylvania, Michener, Herb. Berk. no. 4127!), though equally 

 a Phomopsis, may be different, since it has distinctly larger and 

 often triguttulate spores. 



467. Phoma ampelina, Berk, fy Curt. 



Phomopsis ampelina, Grove. 



Pycnidia gregarious, oblong, black, about 200 fx long, 

 immersed, each pycnidium surrounded by a blackish-brown 

 stain, raising the shining discoloured epidermis and at length 

 splitting it by the minute papillate ostiole which is pierced by a 

 round pore. Spores elliptic-fusoid, scarcely acute at the ends, 

 biguttulate, 8-10 x 2-2-5 fx; sporophores a little longer than 

 the spore. 



On twigs of Vitis, Pennsylvania, Michener (Herb. Berk. no. 

 4094!). No spores 12 jx long, such as are described by Berkeley, 

 could be found. The pycnidia are longer than broad, and split 

 the epidermis by a ragged orifice or in a somewhat hysteriiform 

 manner. Allied to P. viticola, but different in external appear- 



ance. 



473. Phoma Edgworthiae, Sacc. 

 PnoMorsis Edgworthiae, Grove. 



On rotting twigs of Edgtvorthia chrysantha, Italy. 



A typical Phomopsis, except that it is more clustered than 

 usual. Spores 7-8 x 2-2^ /x; sporophores linear, 20-25 x 1*5 fx. 

 No B-spores, such as are suggested by Saccardo's " basidiis fili- 

 formibus, 30 x 1-5 fx " could be discerned. 



510. Phoma lirelliformis, Sacc. f. ribicola, Sacc. 

 Phomopsis mbicola, Grove. 



Pycnidia crowded, imperfect, black, narrow-lanceolate or 

 linear, hysteriiform, up to 1 mm. long but not more than 80-100 

 p. wide, sometimes confluent in lono- lines, running parallel and 

 longitudinally on the stem, immersed, then splitting the epi- 

 dermis in narrow slits. Spores fusoid, narrowed, especially at 

 one end, usually biguttulate, 7-8 x 2'5 u; sporophores linear, 



1245 x 2 ft. 



On twigs of Ribes sanguineum, Saintes, France (Rabenh. 

 rung. Eur. no. 2988!). 



The slits in the epidermis are much narrower than in Phomopsis 

 hysleriola (Sacc), and are not placed transversely on the stem 

 as in P. aucubicola, Grove, in Keiv Bull. 1917, p. 67. 



On the same sheet is Eoum. Fun<?. Gall. exs. no. 3353 ! with 



the label " Phoma lirelliformis, f . Rhamni Alaterni," from the 



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