786 SPH^RIACEI. 



2362. Nectria Purtoni. Curr. " Purton's Nectria." 



Gregarious ; perithecia globose, clotted, red, at length blackisb, 

 immersed at first in the receptacle ; mouth very small, sub- 

 mamillose ; sporidia uniseriate, colourless, acuminate, ellijDtical. 

 — Curr. Linn. Trans, xxii, t. 49,/. 181. Cucurhitaria pinastri, 

 Grev. ^ 50. S. Purtoni, Grev. 



On Valsa ahietis. 



Sporidia (-0004 in.) -01 m.m. 



Elevating the bark, which is at length ruptured by the evolution of the 

 perithecia, which are at first included in a receptacle, but having pierced its 

 surface, assume a globular form, and appear as if merely seated on that 

 body, others push aside those which preceded them, and thus irregular 

 clusters are produced. When it occurs it is in great abundance, fre:iuently 

 covering the smaller branches for many feet, at intervals often not exceed- 

 ing the eighth of an inch. — Grev. 



2363. Nectria ochraceo-pallida. B.&Br. *' Pale-ocbre 



Nectria." 



Perithecia pallid-ochraceous, ovate, obtuse ; ostiola minute, 

 papillteform ; asci clavate ; sporidia elongated, subfusiform, tri- 

 septate. — B. ^ Br. Ann. N.H. no. 607. 



On elm branches. Rockingham Forest. 



Oregarious, scattered or crowded, perithecia pale-ochre, with a minute 

 papillseform orifice more or less collapsed when dry. Formerly considered 

 as a state of N . cocci/iea, from which the clavate asci and longer sporidia dis- 

 tinguish it. 



var. corallina. B. ^-Br.Ann.N.H. no. 779*. 



On elder and elm. 



Eather smaller than the paler plant, and less depressed, but little dis- 

 tinguishable difference in the fruit. — B. <£• Br. 



2364. Nectria muscivora. B.^^ Br. " Moss-loving Nectria." 



Mycelium effused, white, woolly ; perithecia crowded, orange, 

 semi-immersed, ovate ; ostiola papillteform ; asci clavate ; spori- 

 dia shortly fusiform. — B. ^•. Br. Ann. N.H. no. 608. 



On mosses. King's Cliffe. [On Jungermannia. S. Carolina.] 



Mycelium forming white lanose patches, 2 in. or more in diameter, and 

 rapidly destroying the moss on which it grows. Perithecia collected in little 

 groups, more or less connate, half immersed in the m3'celium, bright orange, 

 ovate, sometimes collaj sing laterally. Sporidia elliptic, pointed at either 

 end, with a central septum, and the endochrome in each articulation bipar- 

 tite, probably trise^tate v, hen mature. 



