1919] STEVEXS &- DALBY—PHYLLACHORA 55 



Phyllachora canafistulae, sp. nov.^Spots not exceeding the 

 stromata. Stromata mostly large, 2-5 mm., flat, black, visible 

 equally from both sides of leaf, occupying the mesophyll, with 

 many locules. Clypeus more prominent above. Locules globular, 

 155-170 ^t in diameter. Asci cylindrical, 72-99X16-20 /x. Spores 

 oval to ellipsoid, hyaline, continuous, 13-16X6-8^1. Paraphyses 

 filamentous. — Figs. 5 and 6. 



On Cassia fistula: Mayaguez, 7022 (type). 



Although 2 species of Phyllachora are described on Cassia {P. bakeriana 

 and P. cassiae from Brazil), the present form appears entirely distinct from 

 both of them; from the former, which has small stromata and large spores; 

 from the latter, which has small, mostly unilocular, stromata which are limited 

 to the upper part of the mesophyll. 



Phyllachora drypeticola, sp. nov. — Spots not exceeding the 

 stromata. Stromata numerous, black, extending through the 

 leaf and visible equally above and below, 1-2 mm. in diameter, 

 in the mesophyll with a thick clypeus on each side. Clypeus not 

 exceeding the stroma. Locules globular or irregular, mostly 

 strictly median, 100-200X125 ju. Asci cylindrical, 8-spored. 

 Spores 17X3 .5 n, continuous, hyaline. — Figs. 7 and 8. 



On leaves of Drypetes sp. : Rio Tanama. near Arecibo, 7828 (type). On 

 Drypetes glauca: El Gigante, 8558, 8558b; Utuado, 4387; Maracao, 4508, 

 4472, 1353, 730, 4746, 8558D; Mayaguez, 1834. In certain specimens, as 

 no. 4387. the stromata are less arched of surface and often surrounded by a 

 dead zone of leaf tissue. 



This form is especially interesting since the stromata, while bearing 

 perithecia in the mesophyll, often bear conidial layers at the same time, on 

 both its upper and lower surfaces. These beds to the naked eye appear 

 brick-red. 



Phyllachora ENGLERi Speg. — Fig. ii. 

 On Anthuriiim scandens: Las Marias, 430; -Monte de Oro, 5712. 



Phyllachora gnipae, sp. nov. — Spots numerous, 0.5-1.5 cm. 

 in diameter, surrounding the stromata with an irregularly circular 

 zone, below brown, above brown, or when old blanched. Stromata 

 irregularly circular or angular, 2-5 mm. in diameter, shining black 

 above, dull black below, rough due to the perithecia. Clypei 

 about 30 jx thick in both upper and lower epidermis, extending far 



