

rarrtiiosa, NcwfioM, X. J.. Hotlilohciii, Pa. (Scliw.). Xmv York Statt- 



(I'.H-k). 



'I'lu' lu'iitliecia arc froiicially ciirniiisnilKMl l»y a lilack line pciif- 

 iiiitiiiir tln' wood. Acc()nliii<r to Scliwcinitz. tlic pcritliccia arise from 

 ihf smiaci' of the iimor bark and never I'loiii the wood. 



CI. Vifciiiii. (Sfliw.) 



Hyslerium I'luciiiii. Schw. Syii. N. Am. 2088. 



Krnni|»(Mit, larj^'c, elon^'ated, ovate, I»rownisIi-l»Iack, niiieli laijrer 

 than S})(n-o/itef/<f LcAi, to whicli it is allied. Fiips thin; disk ndeseent. 

 eruiiipent and surrounded l»y the Itark, 



On ohi liraneiies of Vdrclniiiin froii(hsuii>, IJethieheni, I'a. (Sehw). 



The specimen in IJerl». Sehw. appai'cntly ItehjUgs here, liut aflurd> 

 MO I'ruit. 



mill 



FAMILY. i)I€H.*:xai:e.*l 



Peritiiecia roinid or eion<rated. simple, covered, i-aisinu: the epi- 

 di'rmis into pustules, tiiially erump<'nt. memltranaceous or eoriaei'i)- 

 iiieml)runaeeous, Idaek, opening i»y a clelt aci'oss the apex. 



DirH.'t:xA. Ki'. 



Siinitnn Vcg. Scntiil. p. 403. 



I'eritlieeia orliicular or elonirated. simple, innate-erumpent. cori- 

 iicco-iiieniliranaceous, openinir I'y a cleft across the ape.\, mostly in 

 densely crowded patches. A.^ci saccate or sulielongatecl, S-spored. 

 Sporidia oltlong or ol»lon<r-eIliptical, 2-3-septate, suithyaliiie. mostly 

 l)iogenous. The place of this geiuis in the mycolotrical system is 

 uncertain, it was formerly classed with the lichens. It dilVers from 

 the Ilyntcriavea' in its memI»ranaceous and at first huried peritiiecia. 

 The asciirerous state is seldom met with, but the pycnidial stiige 

 (Psllonporit, I^^l).) is common. 



D. (|uereiiia, (Pers.) 



<)pf.';iap/iii i/iii'iiiiia, Per.s. in Ann. Hot. VII, p. 31, t.ib. ,?, fig. 4. 

 S(/ii:'iili> ina i/iificiiiiim. CIiov I-'lor. I'.-iris, p. 4.^S, tab. 11, fig. 21. 

 t>f>ei;>ii/>lia mmiilaiis, Acli. I.iclu'U. I'niv. p. 247. 

 /liiluena t/iii-iniiti, Kr. ICIcnch. II, p. 142. 

 Kxsicc. I'ckl. V. Rh. i>/iC>.— M. & N. Stiri). Voff. 265.— Syilow, M. Mnrcli. (Si.—r.iv. !■ 

 Am. "I, 640. -Rotnn. I'. C. yys.— KU. N. A. K. 7').\. 



]^•ritllecia erumpent, on round or transversely eloiiiiated, Idaek. 

 I'lustaceous spots J-1 cm. or iiior(> across, siilt<rl(»l»ose or coiiic-gloltosf. 

 ronuli, liiowiiisli-ldark, .i-l mm. diaiii., or sulieloiitrattvl, iiiemlirana- 



