550 



B. horizontalis, (B. & C.) 



Melogramma horizontale, B. & C. Grev. IV, p. 98. 

 BotryosphtEria horizontalis, Sacc. Syll. 1789, Cke. Syn. 1429, 



" Bursting the bark transversely. Perithecia minutely pulveru- 

 lent. Asci large, clavate. Sporidia hyaline, fusiform." 

 On Gossypium, South Carolina (Ravenel). 



B. rhizogena, (Berk.) 



Spharia rhizogena, Berk. Hook. Lond. Journ. Bot. Vol. IV, p. 312. 

 Botryospkixria rhizogena, Sacc. Syll. 1786, Cke. Syn. 1^40. 



"Patches nearly orbicular, 4 mm. or more broad, surface rather 

 ii-regular, here and there depressed. Stroma pale yellowish-brown. 

 Perithecia minute, dull, not shining, partially immersed, pale brown 

 when shaded from the light, nearly black above, at first pruinose, glo- 

 bose, with a minute and sometimes depressed papilla, filled with pale 

 brownish jelly. Asci linear. Sporidia elliptical. Exactly the habit 

 of Gucurbitaria Laburni, but differs in structure." 



On roots of GleditscMa triacanthus, Ohio (Lea). 



B. subconnata, (Schw.) 



SpJuEria subconnata, Schw. Syn. N. Am. 1443. 



Tliuemenia valsarioides, Rehin in Thum. M. U. 2166. (sec. Cke. Grev. XIII, p. lor), 



" Cespitose, confluent, elliptical, erumpent through the thin epi- 

 dermis, scarcely a line long, black. Perithecia few, cotuparatively 

 large, flattened at the apex, or irregularly subcoUapsing, papillate-osti- 

 olate, white inside, at length deciduous, leaving white, cup-shaped 

 cavities." 



On Gossypium, Carolina (Schw.), Georgia (Ravenel). 



The spec, in our copy of Myc. Univ. is immature. The perithecia 

 are 80-110 /x diam., and rather numerous, instead of "comparatively 

 large and few." The spec. 1443 in Herb. Schw. is only a Phoma with 

 sporules, 5-7 x 2i '/i, hyaline. 



B. Castaneae, (Schw.) 



SphcEria Castanet, Schw. Syn. Car. No. 124. 

 Botryospliaria Castanccs, Sacc. Syll. 1797, Cke. Syn. 1447. 



Stroma ovate, tuberculose, about 6 mm. long, dark brown, sub- 

 elevated. Perithecia globose-depressed, few or numerous (30-100), 

 distinctly papillate, the upper part of the perithecia deciduous, leaving 

 the basal cavities resembling a honeycomb; when young white inside. 



On chestnut limbs, Carolina (Schw.). 



