TROPICAL POLYPORES 35 



on drying, faintly radiate-striate ; margin slightly undulate, tes- 

 sellate at times, fringed with numerous slender cilia; context very 

 thin, white, membranous, wholly translucent; tubes decurrent, 

 white, becoming ochraceous, 1 .5-2 mm. long, normally hexagonal, 

 mouths 0.5-1 X 2-3 mm., not radially confluent, edges thin, 

 fimbriate; spores ellipsoid, 9X4ju;stipe lateral, subequal, 

 scutate at the base, concolorous, hispid, 2-5 mm. long, 1-2 mm. 

 thick, always umbilicate above. 



Found on old logs in rich woods at Miami, Florida. 



5. HEXAGONA DAEDALEA (Link) Murrill 



Pileus spatulate-obovate to reniform, applanate, usually 

 attenuate behind, 4-8 X 2-6 X 0.1-0.3 cm.; surface white when 

 fresh, radiate-striate, finely tomentose to glabrous, hispid behind, 

 tessellate near the margin, which is thin, often pellucid, undulate, 

 at times fimbriate, lobed or fissured with age; context fleshy, 

 fragile when dry, white, often partially translucent; tubes 

 decurrent, concolorous, 1-2 mm. long, 4-6-angled, mouths very 

 variable in size, 1-2.5 X 3-7 mm., smaller near the margin, 

 edges thin, but apparently firm, at length splitting into irregular 

 teeth; spores ellipsoid, 9-12 X 4-5 ju; stipe lateral, concolorous, 

 hispid-tomentose, 0.5-1 cm. long, 2-5 mm. thick, usually dilated 

 at the base. 



Common on dead wood throughout. 



6. HEXAGONA DAEDALEIFORMIS Murrill 



Pileus fan-shaped to reniform, sometimes slightly attenuate 

 behind, subapplanate, plane or concave below, long-stipitate, 2-3 

 X 3-4 X 0.1-0.2 cm.; surface pallid, pale-fulvous when dry, 

 radiate-striate and finely areolate over most of the surface, mi- 

 nutely hispid; margin entire or undulate, thin, concolorous, in- 

 flexed on drying; context thin, white, fibrous; tubes pallid within, 

 scarcely over I mm. deep, decurrent; mouths regular, pallid to 

 isabelline, somewhat glistening, small, 0.5 mm. wide, I mm. or 

 more long; edges very thin, soon becoming fimbriate; stipe 

 lateral, concolorous or paler, glabrous, 1.5-2 cm. long, 2-3 mm. 

 thick at the base, increasing to 5 or 6 mm. above, furrowed on 

 the back, subcylindric below. 



Collected once on dead wood in Mexico. 



7. HEXAGONA TESSELLATULA Murrill 



Pileus flabelliform, convex, depressed behind, 1-3 X 2-4 X O.2 

 cm.; surface delicately and closely tessellate, finely hispid, becom- 



