550 



B. horizontals, (B. & C.) 



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

 Botryosphcet ia hotizontalis, Sacc. Syll. i;by, Cke. Syn. 1429, 



" Bursting the bark transversely. Perithecia minutely pulveru- 

 lent, Asci laro-e, clavate. Sporidia hyaline, fusiform." 



<~J ' JL v 



On Gossypium, South Carolina (Ravenel). 

 B. rhizogena, (Berk.) 



Sphtzria rhizogena, Berk. Hook. I,ond. Jouru. Bot. Vol. IV, p. 312. 

 Botryosphceria rhizogena, Sacc. Syll. 1786, Cke. Syn. 1440. 



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

 irregular, 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. 7 '' 



On roots of Gleditschia triacanthus, Ohio (Lea). 



B. subcoimata, (Schw.) 



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



Thuemenia valsarioides, Rehin inThum. INI. U. 2166. (sec, Cke. Grev, XIII, p. 101). 



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

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

 large, flattened at the apex, or irregularly ?ul (collapsing, 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 p. diam., and rather numerous, instead of 'comparatively 

 large and fe\v. 7? The spec. 1443 in Herb. Schw. is only a Plionm with 



.-porules, 5-7 x2| p., hyaline. 

 B. Castaueie, (Schw.) 



Sphtzria Castanece, Schw. Syn. Car. No. 124. 

 Botryosphczria Castanets, 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 



