MURRILL : POLYPORACEAE OF NORTH AMERICA 329 



forms of this one which are leally distinct. Favolus tessellatus 

 Mont. (Ann. Sc. Nat. II. Bot. 20 : 365. 1843), a good Brazilian 

 species, was at first determined as F. braziliensis by Montagne and 

 later separated because of its distinctly tessellated or checkered 

 surface and regularly hexagonal pores. Cuban specimens called 

 F. tessellatus are plainly F. braziliensis, and are so determined at 

 Kew by Montagne. 



Exsiccatae : Texas, Wright ; Louisiana, Hale, Langlois ; Cuba, 

 Underwood & Earle ; San Domingo, Wright; Brazil, Telinck. 



4. Hexagona Wilsonii sp. nov. 



Pileus flabelliform, applanate, 4-7 x 4-9 X 0. 05-0. 2 cm. ; 

 surface radiate -striate, slightly hispid, partially tessellate, pure 

 white, becoming cream-colored on drying ; margin at maturity 

 very thin, usually much lobed and fissured, beset with short, 

 fugacious hairs : context fleshy-tough, membranous, white, parti- 

 ally or wholly translucent ; tubes decurrent, white, 1-2 mm. long, 

 4-6 angled, mouths 1.5x5 mm., smaller near the margin, edges 

 very thin, splitting into irregular teeth ; spores ellipsoidal, smooth, 

 hyaline, 5 x 10// ; stipe exactly lateral, equal, concolorous, hispid, 

 O.5-1 cm. long, 2.5-5 mm - thick, often umbilicate above where it 

 expands into the pileus. 



This elegant species was collected by Percy Wilson [no. j if) 

 in July, 1902, in the Luquillo mountains, Porto Rico, three miles 

 from the coast. Decaying logs along a mountain stream were 

 found covered with the fruit-bodies. 



5. Hexagona hispidula (B. & C.) 



Favolus hispidulus B. & C. Jour. Linn. Soc. Bot. 10: 321. 1868. 

 Collected on trunks in Cuba by Wright. 



6. Hexagona princeps (B. & C.) 



Favolus princeps B. & C. Jour. Linn. Soc. Bot. 10: 321. 1868. 

 Collected on dead wood in Cuba by Wright. The type is at 

 Kew. It is a-large, handsome species. 



7. Hexagona fragilis sp. nov. 



Pileus flabelliform, convex, depressed behind, 2-3 x 2—4x0.1- 

 0.3 cm.; surface densely hispid, especially behind, faintly radiate- 

 striate, pure white, becoming straw-colored in drying ; margin 



