BERKELEY AND CURTIS, EXOTIC FUNGI. 287 



50. II. rn^Nix. Fr. in Linn. 1. c, stromato subcaruoso extus umbrino intus albo ; pcritbeciis mcdiia 

 globosis ccntro papillatis semi-prominulis nigris umbrino-velatis. Sphwria vomhuslonim, Scbweiu. MSS. 



On the roots of burnt grasses; Surinam. 



Forming little flat patches a few lines broad ; stroma subcarnose, externally umber, 

 white within. Perithecia globose, black, their upper half prominent, veiled more or 

 less bj a portion of the stroma; ostiola papillceform. Asci linear; sporidia elliptic, 

 slightly pointed at either end, about l-1162dth of an inch long, dark brown. 



A very singular species, resembling R. suhicidatum, but with the texture of a 

 HTjpocrea. 



CO. DiATUYPE RADULANS, D. sp., pustulata minor circumscripta, peritheeiis paucis pruinosis; ostiolis 

 elongatis sulcatis demum deciduis. Sphseria radulans, Schwein. MSS. 



On small dead branches; Surinam. 



Pustules small, circumscribed ; perithecia few, crowded, clothed with pale lilac 

 meal, vvdien the stroma is torn asunder; ostiola much elongated, conical, sulcate, at 

 length deciduous ; sporidia oblong, short curved, about l-4000th of an inch long. 



Allied to D. Duricei, Mont., but with longer osliole. 



61. D. DIMORPHA, n. sp., effusa nigra, ligno immersa; peritheeiis majoribus globosis, ostiolo elongate 

 spiniformi ; sporidiis minimis oblongis curvia. Sphseria dimorplm, Scliwein. MSS. 



On decorticated twigs ; Surinam. 



Forming little black patches more or less immersed in the wood, and consisting of 

 a number of minute pustules, each of which contains one or two globose rather large 

 perithecia, terminated by a spiniform ostiolum. Sporidia short, oblong, curved, 

 l-6000th of an inch long. 



Closely allied to D. lata, but with larger perithecia and smaller sporidia. Occa- 

 sionally they are compressed and the spots narrow, from which circumstance 

 Schweinitz took his specific name. 



62. DoTHiDEA Cayennensis, Fr. Sum. Teg. Scand. Rhytisma penetrans, Schwein. MSS. 

 On the leaves of shrubs and trees ; Surinam. 



63. D. REPENS, B. and C. Sphseria repens, Corda Fasc. iv. tab. ix. fig. 123. B. serpentina, Schwein. MSS. 

 On the leaves of shrubs ; Surinam. 



We can see no difference between the plant of Schweinitz and that of Corda. The 

 Surinam specimens are, however, too old to afford fruit. 



64. D. grammodes, Kze. in Weig. exs. Actidium? croialarise, Schwein. MSS. 

 On the leaves of some crotalaria ; Surinam. 



66. D. CONSPURCATA, Bcrk. Ann. Nat. Hist. ser. i. vol. iii., p. 399. Sacidium (vcl Dothidea) Surinamrnse, 

 Schwein. MSS. 

 On leaves of shrubs ; Surinam. 

 We cannot distinguish from this, in its present state, D. lohata, Schwein. MSS. 



