i!l-.« ' 



4-Jii 



J :.n : 



;i li'^'lit cnlurcil. iililoim' {'.t-l X '1-',') iiiiii.) -iiniim iiml |i('iicri-ii(iiiL!' to iIk- 

 wool, wliicli is iiinrkril witli w Ithick. circiiiiisci'iliiiiu' line: necks snip- 

 i'oii\ crii-ciit, tlicir liii'iic. coiiic-iiloliosc nstiola {'oniiMtc :it flic Iiiisi'. Iiiil 

 uitiioiit Miiy (lisliiict disk, criiiiiiiciil lliroiiuli ci'Mcks in the slii:liil\ 

 raise I rpidci'iiiis. Asci oMoim-l'iisoiil. alioiit ."iO.\S-I(» n. siiliscs-^ilc. 

 ^-s|iorcii. Sporidia liisnialf. ol)loiii:-('lli|(tical, niiiscptali' an.! sliLilitlv 

 coiisliictcil. i"J-14 x ."U—lo /i. en-is siiliolitiise. 'i'iie ostiola resenililr 

 those i)\' J'Jnli/ix llii rrrrlrnhttii.unW tliev are smaller ami Mi>t silicate. 

 On (lead nia|ile liiiil)S. lionilon. Canada (Mearness). 



Closelv allied to /). /)Hshi/(/f(t. {\)('~U\.). \m\ llie sjieciliien of thai 

 <|ieci('s ill |)esiii. I'l. <'r\|it. has a distinct, nearly round, almost |ilane 

 disk, willi the osliola only slightly |iroiniiient and uai'rower, and ralliei 

 lonii'er. acute sporidia. 



I), t'oii^eiiei', K. vV K. (in llerli.) 



I-:xsicc. i;il. N: Kvrht. N. .\. H. .'cl Soi , js.v 



Stroiiiata evenly scatt.erei|, depri'ssed-conical, rorniei' of the sliuht- 

 ly alteretl sulistance of the l)ark which is li'^hter than the adjacent 

 parts, limited liy a l)liick. circiimscriliiiiL:- line \vlii(di [ieii"trale- tin' 

 wood, apex lirounish-lilack. erniiipi'iil throiiLih the ruptured cpidcrnii^ 

 \\lii(di. however, is only sliuhtly raised. I'erilhecia snlicircinate. ad- 

 nate to the siii'liice of the wood l)iit scarcidy peiietralini:' it. altoiit ti-S 

 in nnmlier, ^ mm. diam., rather aliriiplly coii(racle(| into slender, 

 sliirlitly ('oiiveru'liiu; necks, piercing the disk with their rounded, olitnse. 

 <ooii iimliili<'ate. sliiiiitly projeciimi' ostiola. Asci davate-cylindrical. 

 "••-7.") X 10-12 //. Sporiilia nniseriate. direcl or oiiliiiiie. sometimes 

 partly lii.'^eriate aiiove. elliptical, hyaline, iiniseplate and slroiiiily con- 

 stricti'd, each c<dl with a lar^c iiiicleiis. ri-lJ-xCi //. 



On dead liiidis ol' Fni.iuinix, Fjondon, (yiinada (Dearness). 



In J). Ji'hroxii. (I*ers.) which is credited to this country liy 

 ."^cliweinilz A' !>erk(dey, the asci ami sporidia are scarcfdy di-tiii'^'iiish- 

 alile l'r(jm tlio.se of our I), roiu/rnar. hut in that species the inner iiark 

 is Idackened and swlicarlioni/eil with loiiir. ctiarse. linht colonel fillers 

 liedded in its .surrace just under the epidermis, and there is. in the 

 Kiiropean specc. wo have seen, no Mack circiimscriliiiiii' line |ieiietrat- 

 inu' the woo 1. The pi.M'itheeia also are lai'i>:er. IJerkidey ((!rcv. 1 V, ]i. 

 '.)'.).) states that in specc. from the mountains of New York, the sporidia 

 ar<' at leiiuth ••lenestrate." a character not apjdicaltle \n 1). Jihrosn . 

 S/'/iii'f/'it <',)'tt'us(i Fr. Schw. .""yn. N. Am. l.'Jl."). is appai-ently not dis- 

 tinct Croin I), p'hrosn. 



I>. tecta. (rk**.) 



I \i/.\,i 1,1 hi, Ckc. Cirt'V. XI. )). iHi, Syu. I'yr. jixiu. 

 Dhifxiillir t,,la. Siicc. Syll. '"i.ji. 

 Kxsicc. Rav. H. Am. 7(7 



