252 MOULDS REFEERED BY AUTHORS TO FUMAGO. 



in Herb. Polychceton Persooni, Desm. MSS. Curt. No. 

 2051. 



On Hazel. J. B. H. J. Desmazieres. (Fig. 6.) 

 Stratum distinctly setose ; mycelium moiiiliform ; joints often 

 oblong and uniseptate ; peridia crowded, oblong, or lageniform, 

 sligiitly branclied occasionally, but by no means constantly, 

 rough with free filaments ; orifice sometimes fimbriated. Spori- 

 dia imperfectly known. 



6. C Citri, Berk, and Desm. Sparsum, setosum ; peridiis 

 elongatis ; mycelio ramoso moniliformi pulcherrime reticulato ; 

 sporidlis oblongis minutis. Fiimago Citri, Pers., Myc. Eur., 

 vol. i. p. 10 ; Turpin, 1. c. 



On leaves of different species of Citrus. France. Persoon, 

 Leveille. 



Stratum thin. Peridia elongated, mostly acuminate, conical, 

 or lageniform. Mycelium consisting of beautifully reticulate 

 branclied nioniliform threads. Sporidia minute, oblong ; some- 

 times attached end to end, as observed in C. Fuligo, by Mr. 

 Broome. 



In this species, C. Fuligo, C. elongatum, and C Persoonii, 

 the sporidia start forth on pressure from the tip of the peridium. 

 Asci have not been observed, but the sporidia are attached to 

 each other, at least in two of the species, exactly as in many 

 SphccricB of the subgenus Hypocrca. 



7. C. quercinum, Berk, and Desm. Valde compactum 

 crassum ; peridiis fasciculatis ramosis, strato exteriori transverse 

 fragili ; mycelio parco, articulis vix constrictis. Fumago 

 (Polychgeton) quercinum. Pers., Myc. Eur., vol. i. p. 9. 



On tlie upper side of oak leaves. Persoon. 



Stratum thick, closely compacted, easily separable from the 

 matrix. Peridia fasciculate, lageniform, often branched, espe- 

 cially towards their apices, the outer coat cracking transversely. 

 Mycelium sparing, consisting of continuous scarcely constricted 

 threads. Sporidia vmknown. 



A very remarkable species, differing very much in its thick 

 stratum, which rises half a line from the matrix, and might be 

 compared to a little wool-comb. Persoon iiad this species more 

 especially in view when he proposed his sectional name. The 

 ticket attached to tiie original specimen is as follows : — " Poly- 

 chtBtum. Fumago quercina. Mycol.Eur. 1. Tres-rare. Difl^ere 

 beaucoup des autres especes, et appartient ou a un autre genre 

 ou en fait un particulier." 



8. C. Caroli?iiense, Berk, and Desm. Sparsum, setosum ; 

 mycelio parco ; peridiis laxis ramosis, lateralibus elongatis la- 

 geniformibus ; sporidiis oblongis bi-triseptatis. 



On the under side of leaves of Qnercus obtusiloba, South 

 Carolina, Rev. M. A. Curtis. 



