Hydnaceae. 



Hydnum L. 



1 5. II. conch a turn Fr. 



On trunks. 



Area: Oahu (Polynesia). 



Polyporaceae 1 ). 

 Boletus Dillon. 



16. B. laciinosus Rostr. n. sp. 



Pileo e pulvinato expanso, glabro, laevi, alutaceo; tubulis libe- 

 ris, mediis, dilute fuscis; stipite gracili, elongato, cylindrico v. sur- 

 sum attenuato, profunde alato-lacunoso, annulato ; sporis ferrugineis, 

 fusiformibus , 13 — 15 (j. 1., 6 — 7 p cr. — Pileus 4 — 5 ctm.; stipes 

 10—12 ctm. long. 



In a hollow tree. 



17. Jt. costatus Rostr. n. sp. 



Pileo dilute fusco , hemisphaerico — pulvinato , laevi , glabro, 

 2 ctm. lato; stipite ventricoso, utrinque attenuato, sursum profunde 

 costato-lacunoso , inferne obsolete reticulato, 4—5 ctm. ]., usque 

 2 ctm. crasso, basi curvato ; tubulis curtis, liberis ; poris minutis ; 

 sporis oblongis, ferrugineis, subtiliter striatis, 18 — %0 p 1., 6 — 8 p cr. 



Suillus Micheli. 



18. S. changensis Rostr. n sp. 



Pileo convexo — piano, rubro, laevi, glabro, 2— 3 ctm. lato; 

 stipite gracili, cylindrico, saepe campresso, basi incurvo, crassiore; 

 tubulis adnatis; poris mediis, sulphureis; sporis hyalinis, oblongis, 

 9 p L, 4 p er. Garne secta cyanescente. 



19. S. ve latus Rostr. n. sp. 



Pileo convexo-plano, rufo-fusco, rimoso-granuloso, 4 ctm. lato, 

 margine velo crasso, stellatim fisso ornato; tubulis liberis; poris 

 amplis, angulatis; sporis hyalinis, ellipsoideis, apiculatis, saepe obli- 

 quis; stipite cylindrico, gracili, laevi, 5 — 6 ctm. 1., 0,5 — 1 ctm. cr. 



20. S. hygrophamis Rostr. n. sp. 



Pileo albo, hygrophano, convexo-plano, initio piloso-squamoso, 

 dein glabro, 2—3 ctm. lato; stipite gracili, flexuoso, sursum fibroso- 

 squamoso, 5 — 6 ctm. 1., 2 — 3 ctm. cr. , cartilagineo , albo, nitido; 

 tubulis liberis; poris mediis, inaequalibus, sinuosis; sporis hyalinis, 

 ellipsoideis, 9 — Î0 p 1., 5 p cr. 



a ) As to the genus Favolus see the following paper by Massee (p. 367). 



