200 Eev. M. J. Berkeley on some Fungi from St. Domingo. 



sunk in cracks, sometimes exposed. Perithecia oblong, occa- 

 sionally confluent, narrowed above into a long necK, nearly 

 colourless, consisting of delicate intricate threads, which pass 

 into slender sporophores surmounted by short fusiform simple 

 spores about 27Jo tn °^ an mcn ^ on S- 



The stroma consists of thickish threads which vary somewhat 

 in diameter, and are loosely woven together towards the base, but 

 closely packed towards the surface, and very frequently anasto- 

 mosing, so as at last to form a dense, almost cellular substance. 

 I have not observed any septa in the spores, but their absence 

 will not justify me in separating this species from the other 

 individuals of the genus. This is certainly one of the most 

 curious species in the collection. It resembles at first sight 

 small dried specimens of Bulgaria sarcoides. 



53. Uredo Domingensis, n. s. Hypophylla ; maculis nullis, 

 soris sparsis orbicularibus epidermide persistente cinctis ; sporis 

 obovatis granulatis pallidis. Salle, no. 78. On leaves of some 

 unknown plant, probably a Solanad. 



Hypophyllous ; spots none ; sori irregularly scattered, some- 

 times confluent, surrounded by the persistent epidermis ; clino- 

 dium flat ; spores oblong, xjjuth of an inch long, T2Vo tn thick, 

 pallid, granulated. 



This appears to be a true Uredo according to Leveille's defi- 

 nition. 



54. Ustilago leucoderma, n. s. Ambiens crusta dealbata tecta 

 sporis atris opacis irregulavi-subglobosis magnis filamentis paucis 

 brevibus variis intermixtis. Salle, no. 76. On the sheaths of 

 some sedge. 



Investing the successive sheaths in patches an inch or more in 

 length, clothed externally with a white rugged crust. Spores 

 -j-j-yth of an inch in diameter ; black, subglobose, rather irre- 

 gular, perfectly smooth, mixed with a few short variously-shaped 

 transparent filaments or membranous fragments. 



This species has much the habit of U hypodytes, but is distin- 

 guished by its white crust and far larger and very different spores. 

 Externally it has a very strong resemblance to Ustilago typhoides, 

 Berk., but the spores are darker and exceed those of that species 

 many times in diameter. 



55. Ustilago axicola, n. s. Pilulreformis axim spicarum de- 

 formans ; sporis subglobosis majoribus subpellucidis immixtis 

 filamentis hyalinis. Salle, no. 74. Infesting the lower part of 

 the axis of the spikelets of some Scirpoid plant. 



Forming little dusty irregular balls principally on the lower 

 spikelets, and in these generally occupying the inferior portion 

 of their axis. Spores about T ^^th of an inch across, globose, 

 smooth, rather pellucid, with a distinct nucleus. 



