422 SPH^EOXEMEI. 



Forming shining patches, which contrast strongly with the rest ofthesuf- 

 face; spores extremely minute, just distinguishable with a power of 250 

 diameters, '0006 in. (-0015 m.m.) long j oblong, with a sporule at either ex- 

 tremity. — J/. /, B. 



1228. Fhoma xnuciferum. Berh " Mucous Phom a." 



Perithecia scattered, oblong ; spores very minute, involved in 

 mucus. — Berk. Hook. Journ, p. 1853,^9. 40, t. 3,/. 5. Ann. N.H. 

 no, 736. 



On elm planks. I^ov. 



Spores discharged from the base when ruptured in a cirrhiform string, 

 extremely minute, oblong, with a nucleus at either extremity. The mucous 

 substance in which the spores are involved is so little soluble, that they are 

 not dispersed as in other species. — M.J. £. 



1229. Phoma ulmicola. Berk. " Elm-plank Phoma." 



Spots brown ; perithecia rather crowded ; spores small, ellip- 

 tic, hyaline. — Berk. Hook. Journ. 18b3,p. 40, t. 3,/. 3. Ann. N.H. 

 no. 737. 



On elm planks. Nov. 



Forming little oblong brown patches. Spores '0008 in. ("002 m.m.) long; 

 nuclei obsolete. 



1230. Phoma epileucum. Berk. '• Bleached Fir Phoma." 



Spots indeterminate ; perithecia elongated ; spores hyaline, 

 rather large, oblong, without nuclei. — Berk. Hook. Journ. 1853, 

 p. 40, t. 3,/. 2. Ann. N.H. no. 738. 



On bleached pine planks. Dec. 



Perithecia black, minute, elongated, following the direction of the fibres. 

 Spores perfectly colourless, oblong, -00015 in. ("OOSS m.m.) long, sometimes 

 slightly broader at one extremity, without any definite nuclei. — M.J.B. 



1231. Phoma fibxicola. Berk. " Fibre-loving Phoma." 



Spots indeteiminate ; perithecia minute, elongated ; spores 

 ovate and elliptic, greenish. — Berk. Hook. Journ. 1853,/?. 40, t. 3, 

 /.I. Ann. N.H. no. 7 39. 



On oak, ash, and elm. Nov. 



Perithecia mostly scattered, but sometimes forming distinct groups, elon- 

 gated, following the course of the fibres ; spores ovate or sub-elliptic, larger 

 than in most species '00023 in. ('006 m.m.) long, of a delicate olive green, 

 without distinct nuclei. — M. J. B. 



1232. Phoma bicuspidatum. Berk. " Two pointed Phoma.' 

 Spots indeterminate; perithecia elongated; spores large, 



