REPORT OF THE STATE BOTANIST 1899 



847 



adopted. The species is allied to H. f a r i n a c e u m , from which 

 it differs in its blunt ciliated aculei, and from H. stipatum it may- 

 be separated by its conical ciliated aculei. 



Grandinia burtii n. sp. 



Resupinate, thin, adnate, minutely rimose, white or whitish, becom- 

 ing tinged with creamy yellow, the margin definite, white; granules 

 minute, hemispheric or papillose, numerous, rather close but scarcely 

 crowded; spores broadly elliptic, .00024 of an inch long, .0002 broad. 

 Bark of beech. East Galway. Saratoga co. July. E. A. Burt. Prof. 

 Burt has also collected it on bark of elm in Vermont. In the fresh 

 state he has observed a faint greenish tint in it, but this entirely dis- 

 appears in drying. 



Odontia acerina n. sp. 



Effused, very thin, ecostate, crustaceous, adnate, following the 

 inequalities of the surface on which it grows, indeterminate, grayish 

 buff or isabelline, verrucae very minute, papilliform, bearing at their 

 apexes one or more pale setae; spores hyaline, elliptic, .0003 of an 

 inch long, .00016 broad. 



Dead wood and bark of red maple, Acer rubrum. Monte- 

 zuma. October. 



The species is closely related to O . rimosissima, but it forms 

 a thinner stratum with an indeterminate margin and it is not con- 

 spicuously rimose. Its spores are longer than in that species. 



The subjoined synoptic table will indicate the prominent disntic- 

 tive characters of the New York species of Odontia now known. 



Mycelium forming rhizomorphoid threads t 



Mycelium not forming rhizomorphoid threads 3. 



1 Hymenium pallid 2 



1 Hymenium brown fusca 



2 Margin fimbriate , fimbriata 



2 Margin not fimbriate tenuis 



3 Color red or reddish lateritia 



3 Color not red or reddish.. - 4 



4 Margin determinate 5 



4 Margin indeterminate acerina 



5 Margin white, byssin. pruni 



5 Margin neither white nor byssin rimosissima 



