NOTICES OF NORTH AMERICAN FUNGI. 3 



are not commonly met with. It has also been found, with tetras- 

 pores, in the month of January, by my friend Mr. Goode, of 

 Plymouth. 



EXPLANATION OF PLATE XII. 



1. — The entire frond. 



2. — Apex of ultimate segment, showing' the unequal terminal lobes with the 



definite sori X 20. 

 3. — One of the marginal processes X 100. 



4. — Tetraspores in siiu, showing also the veins and cells of frond X100. 

 5.— Tetraspores X 200. 



NOTICES OF NORTH AMERICAN FUNGI. 

 By the Rev. M. J. Berkeley, M.A., F.L.S. 



(Continued from Page 180.) 



276. Corticium diminuens. B. $ C— Rav. Fasc. iii., 31. Album 

 stratosum, hymenio cretaceo diminuente. No. 4009. Alabama, 

 Peters. 



Consisting of several layers, each separated by a dark line ; 

 hymenium white, diminishing in width each time of growth, so as 

 to leave a narrow zoned border. 



277. Corticium subgiganteum. B. — Effusum rigidum cremori- 

 color marginem versus subfuscum ; hymenio e velutino glabro. 

 Rav. No. 1669. 



On Magnolia glauca. Sent as a form of C. giganteum, but the 

 texture is different. Widely effused ; at first cream coloured, 

 rigid, then acquiring a brownish tint, especially towards the margin; 

 velvety in the younger parts, smooth in the older. 



278. Corticium scariosum. B. $ C— Tenue secernibile mem- 

 branaceum immaginatum ; hymenio pulverulento ochroleuco. No. 

 4916. On alder. Car. Sup. 



Forming a thin, oblong, membranaceous separable stratum, 

 without any distinct border ; hymenium pulverulent ochroleucous. 



270. Corticium aschistum. B.— Tenue rigidum secernibile ochro- 

 lencum tuberculatum papillatumve ; hymenio velutino. No. 1430. 

 Car. Inf. On the under side of a trunk of Acer rubrum, lying on 

 damp soil. 



Effused, thin, separable, smooth beneath, rigid ; hymenium 

 papillate or tuberculate ; velvety. 



280. Corticium portentosum. B. $ C. — Ochroleucum, contextu 

 crasso albo molli spongioso ; hymenio tuberculato glabro. No. 3620. 

 Penns. Miehener. 



Forming a thick mass on very decayed wood, spreading widely ; 

 substance soft, white, spongy ; hymenium tuberculate smooth. 

 Some parts, however, are free from tubercles. 



281. Corticium colliculosum. B. $ C. — Tenue adnatum ; mycelio 

 albo ; hymenio hete ochroleuco papillato granulatocme glabro. No. 

 5297. New Eng., Sprague. 



