A NEW BOLETUS FROM JAMAICA 



William A. Murrill 



During the winter of 1907-8, two species of Boletaceae, the 

 only representatives of the family known from the island, were 

 collected in Jamaica. One of these, Rostkovites granulatus, was 

 rather common at Cinchona, at an elevation of 5,000 feet, but, 

 being a temperate species, did not occur at lower elevations. The 

 other, described below, was found in the famous Cockpit Country, 

 a limestone region of 2,000 feet elevation, which has yielded many 

 botanical novelties in recent years. 



Gyroporus jamaicensis sp. nov. 



Pileus fleshy, small, convex, circular in outline, 1.8 cm. in 

 diameter, 5 mm. thick; surface umbrinous, viscid, finely areolate 

 in places, cuticle tough : context white, unchanging, i mm. thick 

 behind, taste slightly mucilaginous ; hymenium readily separating 

 from the context, nearly plane, slightly distant from the stipe, 

 tubes white throughout, unchanging, 3.5 mm. long, mouths 

 circular, regular, 4-5 to a mm., edges thin, conspicuously denti- 

 culate: spores elongate, smooth, hyaline, 10-12X4-5/*: stipe 

 central, white, subglabrous, smooth, cylindric, curved, 3 cm. 

 long, 3.5 mm. thick, slightly tapering at the base. 



Type collected in Troy, Jamaica, at an elevation of 670 meters, 

 in grass in a young growth of coppice on the north slope of a 

 small hill, January 12, 1909, W. A. Murrill & W. Harris lops. 



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