646 



Quercus; on beech and Liriodendron, Pennsylvania (Everhart); on 

 various dead limbs, Florida (Calkins). 



The perithecia appear first in the middle of the stroma, and spread 

 towards its margin, which thus remains for some time sterile. The 

 perithecia are larger than in H. perforatum and more evenly effused, 

 and the stroma is of a brighter color. At first, and around the margin 

 of the stroma, the perithecia stand quite separate, but they are finally 

 closely packed. 



H. subchlorinuni, Ell. & Calkins, Journ. My col. IV, p. 86. 



Exsicc. EH. & Evrht. N. A. F. 2d Ser. 21 15. 



Stroma suborbicular, thin (1 mm.), flat, ^-1 cm. diam., sometimes 

 continuous or interruptedly confluent for 5 or more cm., purplish rust- 

 color, with a thin, sterile margin at first, but this generally disappears, 

 leaving the margin abrupt and rounded, surface papillose from the 

 slightly prominent, rounded apices of the perithecia, which are in a 

 single layer, subglobose, small (\ mm.), numerous, but not crowded so 

 as to be much compressed, covered above with a thin stromatic layer 

 which is of a dirty greenish-yellow within, at least in the young, fresh 

 growing state, and finely white-punctate from the minute ostiola, but 

 both the internal yellow color and the white-punctate ostiola finally 

 disappear. Asci (p. sp.) 60-65 xl /ul, with a stipitate base 30-40 p. 

 long. Sporidia uniseriate, elliptical or subnavicular, opake, 7-8 x 



On bark of dead limbs of some deciduous tree, Florida (Calkins). 



The general appearance, color and mode of growth is that of 

 H. rubiginosum, (Pers.), from which it differs in its yellow stroma, 

 smaller perithecia and sporidia; nor can it be referred to any of the 

 species already enumerated, having the internal substance of the 

 stroma yellow. The yellow stroma and smaller sporidia will also dis- 

 tinguish this from H. perforatum, (Schw.). 



H. Fendleri, Berk. Grev. XI, p. 132. 



Effused, determinate, thick, rugose, yellow, finally black-brown 

 ("atrofuscum' 7 ). Perithecia distinct, globose, elevated, with black 

 papilliform ostiola. Asci cylindrical. Sporidia narrow-elliptical, 

 straight or somewhat curved, dark, 12-13x4 fi. Somewhat like an 

 effused state of H. multiforme or a thick form of II rubiginosum, at 

 length nearly black. 



On rotten wood, Venezuela. Extra limital, but will probably be 

 found in Central America. 



