American Boletes 21 



cuticle; margin thin, fertile, subentire; context white, tinged 

 with pink; tubes adnate, decurrent, yellowish when young, 

 stained brown with the spores at maturity, mouths rather large, 

 angular, irregular; spores oblong-ellipsoid, smooth, yellowish- 

 brown, 7-9 X 3-4/1; stipe eccentric, flexuous, slightly tapering 

 below, 7 cm. long, 1.3 cm. thick, concolorous, glabrous, reticulate 

 above with brown lines. 



Known only from Auburn, Alabama. 



34. Ceriomyces guadalupensis (Pat.) Murrill 



Pileus small, fleshy, convex, 2-3 cm. broad; surface chestnut- 

 brown, very finely tomentose, adorned with short, erect, floccose 

 filaments; margin incurved, thin, appendiculate, paler; context 

 thin, yellowish, reddish beneath the cuticle; tubes short, yellow- 

 ish-brown, mouths small, angular; spores very long, oblong- 

 ovoid, smooth, rounded at the apex, apiculate at the base, 

 ochraceous, 1- or 2-guttulate, 16-20 X 6-8 /x; cystidia prominent, 

 cylindric, yellow; stipe slender, ventricose, yellow with red 

 striations, marked with fine, close ribs. 



Found on decayed wood in Guadeloupe. 



35. Ceriomyces Maxoni Murrill 



Pileus irregularly circular in outline, convex, slightly de- 

 pressed, 7 cm. broad, 1-1.5 cm. thick; surface glabrous, smooth, 

 very dark brown, almost black near the margin, slightly lighter 

 at the center with dark blotches, margin undulate, involute; 

 context very fleshy; hymenium strongly concave, pure-creamy- 

 white, tubes adnate, rather short, small, angular, thin-walled, 

 edges becoming lacerate; spores oblong-ellipsoid, smooth, 

 hyaline, 2-guttulate, 9-1 1 X 3-4 m; stipe central, thick, tapering 

 downward, 2.5 cm. long, 3 cm. thick above, 1.5 cm. thick at the 

 base, smooth and glabrous below, closely and conspicuously 

 reticulate above, fleshy, solid. 



Found among mosses on a rotten log at Coliblanco, Costa 

 Rica. 



36. Ceriomyces miniato-olivaceus (Frost) Murrill 



Pileus firm, convex, becoming nearly plane and somewhat 

 spongy with age, cespitose, 5-15 cm. broad ; surf ace finely tomen- 

 tose to glabrous, sometimes rimose-areolate, vermilion, becoming 

 olivaceous or ochraceous-red, changing to blue when handled; 

 margin acute, slightly exceeding the pores; context pale-yellow, 

 changing immediately to blue when wounded, mild or slightly 



