178 NOTICES OF NORTH AMERICAN FUNGI. 



404. Sphaeionema Rhoidis. B. Sf C. — Peritheciis sparsis vel con- 

 gests minoribus subcylindricis erumpentibus. 



On brandies of Rhus copallina. Car. Inf. No. 233. 

 Much resembling the last, but very much smaller, and with the 

 perithecia often crowded. Unfortunately no fruit has been found. 



404 (bis). Sphaexonema macrosporum. B. % G. — Subcylindricum 

 basi parce dilatatum ; sporis longis filiformibus flexuosis, 7-8 sep- 

 tatis coronatum. 



On twigs of Robinia. Car. Inf. No. 3283. 



Perithecia cylindrical, slightly thickened at the base formed of 

 elongated cells, crowned with the radiating thread-like curved 7-8 

 septate spores. 



405. Sphaexonema sexiatum. B. & C. — Peritheciis majoribus sub- 

 cylindricis transversim seriatis apice collapsis ; sporis filiformibus e 

 strato pallide brunneo oriundis. 



On birch. Massachusetts. C. J. Sprague. No. 4896. 



Bursting transversely in rows through the bark ; perithecia 

 rather long, collapsing above, outer walls red-brown under the mi- 

 croscope, lined with a pale brown stratum, from which spring the 

 hyaline slender- waved spores which are three times as long as the 

 pale brown sporophores. 



405 (bis). Sphaexonema Robiniae. B. $ C. — Peritheciis liberatis 

 subglobosis ostiolo brevi truncato primum pruinoso ; sporis hyalinis 

 oblongis utrinque obtusis. 



On branches of Robinia and Tilia. Virginia Mountains. No. 

 3309. On lime. No. 3331. 



Perithecia at length free, subglobose,with a short truncate ostio- 

 lum, at first pruinose ; spores oblong, hyaline, '0006 long, obtuse 

 at either end. 



406. Sphaexonema nitidum. B. Sf C. — Peritheciis conicis truncatis ; 

 sporis oblongis vel clavatis hie illic uno apice attenuatis binii- 

 cleatis. 



On twigs of Acer Negvndo. Carolina. No. 6388. 



Perithecia conical, truncate, bursting through the cuticle, some- 

 times surrounded by a dark line, resembling those of a Sphaeria of 

 the tribe Pertusaa ; spores oblong or clavate, "0004 long, binu- 

 cleate. In many respects resembling the last, but the spores are 

 different. 



406 (bis). Sphaexonema populi. B. $ C. — Peritheciis conicis quan- 

 doque congestis ; sporis breviter fusiformibus hyalinis. 



On bark of Populus monilifera. No. 5872. 



Perithecia conical, scattered, or congested, more acute in the last, 

 but sometimes cylindrical ; spores hyaline, shortly fusiform, -0004 

 long. 



407. Sphaeronema subtile. B. § C. — Hysteriiforme ; sporis mi- 

 nutis oblongo ellipticis. 



On pine wood. Massachusetts. Russell. No. 5462. 



