CEYLON FUNGI. 23 



1851.'" In Saccardo, Syll. Fung., II., p. 632, it is listed as 

 Dothidella nerviseqma (Berk.) Sacc, Theissen and Sydow have 

 transferred it to Monorhiza, as Monorhiza nerviseqma (Berk.) 

 Theiss. & Syd. 



251.— Dothidea BarringtoniaB B. & Br. 



The type specimen of this, on Barringtonia speciosa, was 

 said to be immature by Berkeley and Broome. Cooke, in 

 Grevillea, XIII., p. 41, stated that the specimen bore small 

 ostiolata perithecia without fruit, which were probably those 

 of a Phoma. Subsequently, in Grevillea, XVII., p. 79, Cooke 

 and Massee described Phoma Barringtonise Cke. & Mass., on 

 living leaves of Barringtonia speciosa, Kew, in a list of new 

 British Fungi. Their description was " Epiphyllous, on large, 

 irregular, glaucous spots, Perithecia convex, papillate, sub- 

 gregarious, black, covered with the thin shining cuticle, 

 Sporules fusoid -elliptic, with a nucleus at each end, continuous, 

 hyaline, 13-15 X 4-5 jjl." 



Berkeley and Broome's description of Dothidea Barringtonise 

 is " Cellulis radiantibus, in maculis latis orbicularibus dispositis, 

 minutis, apice niveis. On leaves of Barringtonia speciosa. 

 Botanic Garden, Peradeniya, Oct., 1864. Unfortunately thei;e 

 is no fruit : but the production is too remarkable to pass it by 

 altogether. It has at first sight the appearance of an Asteroma." 

 By " cellulis," Berkeley and Broome meant pycnidiis. 



The type of Phoma Barringtonise Cke. & Mass, in Herb. 

 Kew is identical with Dothidea Barringtonise B. & Br., and it 

 would appear that it is part of the latter specimen, not a 

 British fungus collected at Kew. 



The fungus forms large spots up to 7 cm. diameter, usually 

 semicircular, and extending from the margin of the leaf ; they 

 are gray, obscurely zoned with pale brown, with an olive 

 margin. The pycnidia are epiphyllous, scattered, subepider- 

 mal, prominent, forming minute black points, usually arranged 

 more or less in concentric lines. Each point is tipped with 

 white, owing to the rupture of the epidennis over the ostiolum. 

 The pycnidia are globose, about 150 ^ diameter, with a well- 

 defined circular ostiolum, 10 ]x diameter. The sporidia are 

 narrow-oval, with obtuse ends, greenish hyaline, continuous, 

 12-16 X 5-7 ti. 



