notices of north AMERICAS fungi. 83 



length free ; sporophores about equal in length to the spores which 

 are shortly fusiform, -00025 long, mixed with filiform processes, 

 about three times as long, curved at the tips. 



* Phoma fibricola. B.— On whitened wood of Populus dilatata. 

 Penns., Michener. No. 4241. 



389. Phoma maculare. B. $ C— Maculis orbicularibus brunneis 

 immarginatis peritheciis irregularibus ; sporis oblongis subcymbi- 

 formibus. On leaves of Diplopappus. Alabama, Beaumont. No. 

 4GG1. 



Forming brown orbicular spots, in the centre of which are 

 Beated the irregular perithecia; spores oblong subcymbiform. -0004 

 long. 



390. Phoma chartarum. B. $ C— Sparsum e subiculo tenero 

 byssoideo oriundum, sporis minimis. 



On white paper. Alabama, Beaumont. No. 5106. Perithecia 

 scattered, each springing from some delicate radiating threads ;^ 

 spores very minute, -00012 long, sometimes ejected in the form of 

 a tendril. 



There are also a great many other forms in the collection which 

 can scarcely be characterised as there are no very distinctive marks 

 in the spores. 



391. Phoma cinctum. B. $ C— Irregular e depressum materie 

 alba cinctum, sporis oblongis angustis. 



On leaves of Ulmus Americana. Car. Inf. No. 3791. Peri- 

 thecia irregular, depressed, surrounded by a white border ; spores 

 oblong, narrow, -00027. 



* Leptothyrium Ribis. Libert. — On Ribes nigrum. Connecticut. 

 C. Wright. No. 5G39. New England. Russell. No. 5943. 



In the former the spores are wider at one end, slightly curved, 

 •0008--0006 ; in the latter often more curved, and then not dilated 

 at one end, '001 long. 



392. Leptothyrium Celastri. B. 4' C— Superficiale orbicularc 

 gregarium, sporis cylindricis. 



On twigs of Celastrum. New England. Murray. No. G270. 

 Forming little black orbicular superficial specks ; spores cylindrical, 

 •001 long. 



* Leptothyrium Fragariae. Libert. — Sprague. No. G241. 



393. Leptothyrium Lychnidis. B. tf C— Maculis pallidis ; peri- 

 theciis punetiformibus ; sporis oblongis utrinque irregularibus. 



On Lychnis Flos cttculi. Alabama. Peters. No. 4544. Spot 

 pallid, perithecia very minute ; spores oblong, hollowed out on 

 either side, -0004 long. 



394. Leptothyrium punctiforme. B. tk C— Sparsum minutum 

 superficiale ; sporis oblongis curvalis. 



On leaves of Erujeron. Massachussets, No. 3387. Scattered 



