BASIDIOMYCETES FROM JUAN FERNANDEZ 469 



P. (Poria) piirpureus Fr. 



Masaticrra: Quebr. Damajuana, 30. 12. 1916. 



Meriilius Mall. 



M. coriuni Fr. 



Syn. M. serpens Pers. (non Fr.). 



Masatierra: Slope of El Yunque, 18. 12. 1916; Quebr. Damajuana, 30. 12. 

 1916; Plazolete del Yunque, 30. 3. 1917. 



Hydnum L. 



H. (Odontia) farinaceum Pers. 



Resupinatum, moUe, pure album. Margo saepe fimbriatus. Aculei in 

 statu vivo mollissimi, tactu facile deformati, sub lente quasi e tomento denso 

 tantum compositi, vix ultra i mm. longi et ^\\ mm. crassi. Hyphae aculeorum 

 molles, fibulatae, 2 — 3 \^ crassae. Sporae minutae, laxe asperulae vel punc- 

 tatae, subglobosae vel ellipsoideae, i-guttulatae, 3 [a diam. vel 3 — 3.5X2 — 3 ji. 



Masatierra: Valle Colonial, Quebr. Gutierrez, 7. 12. 1916. 



By naming this species I have followed Bresadola as the specimens in 

 Persoon's herbarium seem to indorse such interpretation though PerSOON's 

 description (»pallidum») does not agree well. Also one of the specimens in 

 Fries' herbarium seems to be this species. The others not. One belongs to 

 Hydmim bicolor, another to Kneiffia abietina Karst., and still another seems 

 to be a new species which T have called Hydmim falcatiim (in my herbarium) 

 owing to the falcate spores. There exists (also in Sweden) a second species 

 (Ellis N. A. F. No. 711 b) with falcate spores which I have called H. lunatmn. 



H. (Odontia) bicolor A. et S. 



Resupinatum, album vel albidum, in sicco demum saepe rimosum. Aculei 

 raro elongati, saepe fere granuliformes (Hydnum granulosum Pers. pr. p.) vel 

 breviter subsetiformes (H. subtile Fr.). Hyphae aculeorum 1.5— 2( — 3) [j. crassae, 

 fibulatae, saepe conglutinatae. Cystidia filiformia vel basidioidea vel capitata, 

 capitulo globoso, 6— 11 [j. diam., saepe in mitra hyalina, globosa crassa incluso 

 vel (demum?) crystallis aculeiformibus coronato. Sporae oblique ellipsoideo- 

 oblongae, apiculatae, non guttulatse, 4.5 — 6X3 [a. 



Masatierra: Plazoleta de Yunque, 30. 3. 191 7. 



H. (Odontia) stipatum Fr. 



Resupinatum, albidum, in sicco plerumque pallescens. Aculei saepe irre- 

 gulares, angulati vel ob concrescentiam spathulati, sub lente brevissime subto- 

 mentosi. Hyphae aculeorum firmulae, valde distinctae, circ. 3 ^ crassae, fibu- 



