441 



riioii!ic('(ii|. 

 ||. (),<ti,,Ii, 

 i.-k. wliicli 

 MMtr-cvIiii 

 ilii'.'li. niii 

 I rlid, 1(1- 



llillii' MS Ol 

 \ rcriirvcd 



•■ liril Str I 



ell ilor- iKil 

 I |iill\ iiiiilr 



I ( DllMT; 



-k. Iilll llol 



lllii«i'|it;ilc 

 ' >)>iiri(liiiiii 

 111. 1:.--Jl'\ 



iivi. Alii. 



ihiii. MiK'k 

 >y tlic Iri- 

 link III ihr 

 ri cIjimiIi'. 

 iiiii-c|iliitc 



niul coiisti-icted, 4-nuck'ate, 12-15x3 /i, with a liristk'-like appondnge 



lit O.'R'll 011(1. 



On (lead oak liiiil).", Now York. Sont also from Louisiana 1»_v 

 Mr. I^anfjlois. 



(,'o(tke, in Valsoi V. S. p. 121, makes this a Syn. o[ V. fafcohi, Fr., 

 Iiiit wo find it very dilVeroiit. 



1). tesselJH, (Pel's.) 



Sphcetia Ussella, Per*. Syn. p. 48. 

 I'alsa less^lla, Vr. Kumnin Veg. Sc. p. 4II. 

 Ciyploifiora lessflla. Knrst. Myc. Kenti. 11, p. 7H, 

 I'alsa miioiinala, I'k. 2Kth Kcp. p. 71. 

 Diapoillif lessflla. Rehm Asc. 176. 



Stroma doprossod-lionnsplii'rical, loi-mod of tho scarcely altered 

 sultstancc of the bark. Iiut surrounded liy a Mack, enveloping crust 

 visiltio throiigh tlii' epidermis as a small. grayisli-l)lack circle 2-3 mm. 

 diam. Peritliocia lew (4-(5), deeply Itedded in the stroma, sunk to 

 llic sulijacent wood whicli is slightly Idackened on the sui'face, l»ut not 

 penetrated l»y any circ\nnscril)ing line. Ostiola separately erum])cnt. 

 Iiut not projecting, perforated and often und»ilicate. Asci oltlong- 

 I'lisoid, attenuated at each end, stipitate, l(M)-13()x 18-22 /i. Sporidia 

 mostly liiseriate, olilong-cylindrical, slightly curved, with a short, 

 slender aj)pendag<' at each end, 4S-r)2 x 7-!^ //. 



On dead willow lindts, Carolina and I'onnsylvaiua (Schw.), Iowa 

 (llolway). Descrilted from the Iowa specc. 



n. tt^ssei'a, (Kr.) 



Sfilum'a Ifss'-ui. Vr. S. M. II, p. 405. 

 /Hafxiilhi- Ifssna. Fckl. Sytiil). Nnchlr. I, p. 31^. 

 Kxsicc. Hckl. F. RI1. 5(92.— K«e. F. Sel. iiy.— Tlium. M. I'. I26t. 



I'eritliecia 3-10 together, sidicircinate. luiried in the unchanged 

 siilistance of the inner liaik which is raised intu indistinct pustules 

 u little paler in the center and l»arely piei'ced l>y the ndnute. black 

 (tstiola. The gnaips of jierithocia are very numerous and lie (dose to- 

 lictlier almost entirfdy fdling the luirk, lait there is no discoloration. 

 Asci olilong-f oid, S-spored, (t()-70 x 10-12 //. Sporidia liiseriate. 

 ol»l(»ng-fusoid, niseptate and constricted (finally 3-soptate).ir)-22 x o 



-* /'• 



On dead lindis of Cnnjhis. Nt'w York (Peck). Iowa (Il(dway), on 



Cnn/hiH iosfratd, California (llarkness). 

 U. obseiira. (Fk.) 



I'alsa fl/>sciira, Pk. jSth Rep. p. 73. 

 /)iat>oilli,' ohsiiiia, Sacc. SyU. 242s). 

 Kxsicc. nil N. A. F. S77. 



56 



