V7Q Hymenomycetse, Hydnaceai, Echinodontium. 



pilei totam vestiente et in stipitem plus minusve excurrente, ni- 

 gro; aculeis subteretibus, gracilibus, 1'/^ mm. longis, 150 ^l. diam., 

 confertissimis, oranibus aequilongis, levibus^ rigidis, corneo-subcar- 

 bonaceis, nigris, apice abrapte subtruncato-rotundatis et subpaili- 

 dioribus; sporis ellipticis v. ovatis v. saepius sublimoniformibus, 

 levibus, multiguttulatis, hyalinis, 12-14 * 8-10. 



Hdb. in montanis pr. Cordoba Argentinae (Stuckeet). — Spe- 

 cies liabitu, magnitudine et natura Polyporo Stztckertiano Speg, 

 simillima et semel pileus centro aculeolifer margine porosus ob- 

 servatus. An specimina concrescentia ? An vero status metage- 

 netici unius speciei? 



10. Hydnum combinans Peck, 53 Rep. (1900) p. 846. — Subiculo ef- 590 

 fuso, tenuissimo, floccoso-farinoso, adnato, indeterminato, albido; 

 aculeis sparsis albidis ad marginem confertis, subfasciculatis, an- 

 guste conicis, brevibus, sat firmis hinc inde cremeis, apice obtusis 



et ciliatis; sporis subglobosis, 3-4 fji. diam., nitide 1-nucleatis. 



Hab. in lignis putrescentibus decorticatis (non coniferis), War- 

 rensburg Amer. bor. 



11. Hydnum populinum Peck, 53 Rep. (1900), p. 846. — Resupina- ^l 

 tum, effusum, subiculo tenui, minute iioccoso demum submembra- 

 naceo, adnato, albo vel albido, margine nudo, tenuissimo, albo; 

 aculeis sparsis v. confertis, brevissimis obtusis, initio papilliformi- 

 bus demum 1 mm. long., teretibus v. confluendo compressis, albis, 

 interdum roseolis ; sporis ellipsoideis, 6-7 « 3-3,5. 



Hab. in cortice emortuo Populi tremuloidis, Gansevoort 

 Amer. bor. — Plagae 6-10 cm. long. ; aculei centro crebriores. 



ECHINODONTIUM Ell. et Ev. Bull. Torr. Bot. Cl. 1900, p. 49 (Etym. 

 ecJiinos eciiinus et odous dens). — Ab Hydno diflfert pileo crasso, 

 lignoso et aculeis intus processibus spinuiosis instructis. 



1. Echinodontium tinctorium Ell. et Ev. 1. c Fomes tinctorius EU. 592 

 et Ev. in Sacc. Syll. XIV, p. 181 ; Hydnum tinctorium Lloyd in 

 litt. — Aculeis cinereis, ca. 1 cm. longis, basi V/^-2 mm. crassis, 

 spinuiis subconicis rufo-brunneis, 20-30 /x. longis, 6-7 fA. crassis, 

 parce vestitis. 



Hab. in truncis Tsugse canadensis in Alaska, Abietis 

 g r a n d i s in Idaho Americae bor. — Species haec gaudet aculeis, 

 nec poris, ut in descriptione Fomitis tinctorii indicatum est. Error 

 ex eo ortus erat, quod in speciminibus prioribus aculei ita abrupti 

 erant ut poros optime simularent. 



I 



Ll 



