160 HyuienomycetsB, Polyporaoeas, Poria. 



cies facile statum juvenilem Porim excurrentis B. et C. var. wa- 

 crostomm Speg. tantum sistens. 



2. Poria Bergi Speg. Fg. Arg. novi v. crit., p. 171 (1899). — Reti- 

 culata, crassa, candida; raycelio late effuso, 5-25 cm. diam., e fu- 

 niculis superficialibus plus minusve crassis ('/^-^ mm.) dense ra- 

 mulosis plus minusve auastomosantibus ad intersectiones crustaceo- • 

 dilatatis (2-iO mm. diam.) efformato; contextu compacto, floccu- 

 loso, tenaciusculo, albo; hymenio concolore, immutabili, in dilata- 

 tionibus superficiali ; poris rotundatis, 350-400 u. diam. v. obscure 

 hexagonis, hemisphaerico-concavis, dissepimentis tenuibus vix pro- 

 minulis, acie integris acutiusculis. 



Hab. ad terram ligiao deusto commixtam pr. Buenos Aires Ai*- 

 geutinfe. — Species pulcherrima, distinctissima. 



3. Poria rancida Bres. Fungi Tridentini IT, p. 96, t. CCVIII, f. 1 5i 

 (1900). — Effusa, alba, dein pallide alutacea, raargine subfimbriato, 

 demum secedente, subiculo tenui, submembranaceo ; tubulis 2-4 mm. 

 longis ; poris variis, rotundatis, oblongis, subangulatis, mediocribus 

 V. submajusculis, usque ad 1 mra. latis, oro integro vel demum 

 etiam lacerato, substantia coriacea, odore forti, farinaceo-rancido 

 praedita; sporis hyalinis, cylindraceo-subcurvulis, 5-7«2y,-3; ba- 

 sidiis cWatis, 15-18!;? 4-6; hyphis tenuibus, 2'/^-4 mm. crassis. 



Hah. ad truncos laricinos juKta radices sfepe acus conglo- 

 merans pr. Tridentinum Tirolise austr. — P. vaporarim Fr. affi- 

 nis, quacum fortasse hucusque confusa, sed odore forti, forma spo- 

 rarum et contextu optime distincta*. 



4. Poria excurrens B. et C — Sylh V, p. 311 — var. macrostoma M 

 Speg Fg. Arg. novi v. cvit., pag. 170 (1899). — Effusa, arida, 

 magiia, 5-20 cm. diam., alba, irregulariter repando-expansa, my- 

 celio tenui, '/^ mm, crasso membranaceo-subfibroso ; poris homo- 

 geneis, verticalibus, giganteis. '/^-2 mm. diam., subirregularibus, 

 anguiosis, dissepimentis elevatis, 2-3 mm. altis subcrassiusculis, 

 aridis, acie subobfcusis, hispidulo-vciutinis, integris vel subdenti- 

 culatis. 



Hah. ad terram nec non folia ramulosque stratos putresrentes 

 in Parque de La Plata Argentin». — Varietas pulcherrima, fa- 

 cile speciem distincfcam sistons. 



5. Poria hexagonoides Speg, Fg. Arg. novi v. crit., p. 170 (1899). 53 

 — Pileis primo orbiculartbus, d<)in lafcissime effusis saepeque con- 

 fluentibus, 2-25 cm. latis, raatri<^i arctissirac adnatis, superne con- 

 vexulis, non v. vix undulatis, TnargiiK' angusto, acuto, albo, non 



