1920] STEVENS— PORTO RICAN FUNGI 255 



M Y CO SPH AE RE LL A CE AE 



Guignardia Justiciae, sp. nov. (figs. 23, 24) .—Diseased spot 

 indefinite, finally yellowish and pale, rather evenly beset with 

 perithecia, 1-2 mm. distant from each other. Perithecium 

 globose, completely imbedded in the leaf, 265 fi in diameter and 

 depth, its wall dark, several cells (34 m) thick. Host tissue sur- 

 rounding the perithecium hypertrophied to a distance of about 

 125 \x in every direction from the perithecium. The resulting 

 "gall" is visible from either side of the leaf, and has the superficial 

 appearance of a stroma with a single central perithecium. The 

 ostiole develops late. Paraphyses none. Asci clavate, usually 

 with a long stipe; body of ascus 17-20X61 /x; total length, includ- 

 ing stipe, 125 ix. Spores 8, inordinate, hyaline, i-celled, oval, 



9-10X18/1. 



On Justicia verticillaris: Maricao, 806 (type); El Yunque, 2839; El 

 Gigante, 8557; El Alto de la Bandera, 9046. 



This fungus is noteworthy on account of the peculiar gall-like formation 

 surrounding each perithecium, the thick wall, and the peculiar long-stalked asci. 



Guignardia Tetrazygiae, sp. nov.— Spots indefinite, irregular, 

 1-2 cm. in diameter or occupying the whole leaf, tan-colored, 

 centers studded with the perithecia which are scattered evenly 

 and profusely over the affected areas. Perithecia black, con- 

 spicuous both above and below, about 160 /x in diameter, thick- 

 walled. Asci, sporiferous part oval, 45 X 27 /x, 8-spored, inordinate, 

 stipe long, slender, 30-60X4-5 m- Paraphyses none. Spores 

 -celled, hyaline, oval, obtuse, 24X10^- 



1 



9 



On Tetrazygia sp.: San German, 4567 (type); Vega Alta, 4148. 



Laestadia 



paraphyses, shape of asci, and other characters. The leaf spot is very charac- 

 teristic. 



Guignardia Nectandrae, sp. nov. — Spots indefinite when 

 young, becoming definite as the host tissue dies, then angular, 

 2-6 mm. in diameter, showing from both sides of the leaf. Peri- 

 thecia opening on both sides of the leaf, more abundant below, 

 scattered, located in the mesophyll but causing swelling of both 

 leaf surfaces. Perithecia thin-walled, pale, 70-85 n in diameter, 



