— 145 — 



(7j - 1 mm.) ii'vegulariter difftisis, conicis vel teretiusculis instrucfum; 

 atque, uti in Auricularineis perennantihus^ ex stratis suprapositis, iion 

 bene sejunctis^ constitutum, quorum exteriora hasidiophora (50 micron 

 alt.), Sterigmata qitatuor. Cystidia clamfovmia apiculata^ membranis 

 vaUdissimis^splendentihus. Basidiosporaemimitaeovatae 5 - 6 ^::::^ 3 • 4. 

 Superficies superior velutina^ ad margine'tn avellaneo-umbrina^ basini 

 versus quasi atropurpurea ; costis alato- fimb?'ia Us notata. 



Hanc Speciem, vero eximiam, Doctori Alexandeo Eoccati, ob 

 suam sollicitam ao cliligentem curam in ruwenzorensi Flora inqui- 

 renda grato animo dico. 



Hab.: In sylvis Nakitavae, 2652 m. circ. (Valli Mobuku). 



Favolaschia Cagnii. Mattirolo nov. spec. 



Pileus gelatinosus, membranaceus., verticaliter affixus, subreni formis 

 vel quasi oi'biculaiHs ; badius, superne levissime undulatus, in sicco 

 quasi pruinosus, verrucoso -tessellatus. Diam 3-4 usque 10 mill, et 

 ultra; margine repando, crenato. Stipite tereti, laterali, vel sublaterali, 

 long. 1 cent, et ultra, alveolis hexagonis, vel rotundato-hexagonis, 1, 

 2 mill. Basidiis bisporis, clavatis 20, 30, 'X 12, circiter. Sporis ovatis 

 elUpticis 7 - 9 'X 4 - 5. 



Habitat in sylvis inter Bihunga (1920) et Nakitava (2652) in 

 ramis emortuis, ubi lecta julio 1906. 



Nomitie HuMBERTi Cagni clari, perillustris, audacis hyperborea- 

 rum regionum exploratoris, banc voco speciem. 



Psilocybe Sellae Bresadola et Mattirolo nov. sp. 



Pileo submembranaceo convexo, subhemisphaerico, subpapillato, 

 margine sulcata 7-8 mm. lato, umbrino-fusco. 



Lamellis concoloribus, postice plano-adnatis, triangulis secedentibus. 

 Stipite fistuloso, glabra, concolore sed saturatiore 2 '/, cent. long. 1 mm. 

 crasso. 



Sporis ovoideis, apice truncatis, saepe uno latere depressis, rufo- 

 carneis 13- 15^ 8-9^ /\ ix. 



YiOTORio Sella ruwenzorensis expeditionis illustratori spe- 

 ciem d. d. 



Habitat in Lobeliarum sylvis ad Grlacies Mobuku, supra 4000 m. 



Hovi Generis et novarum specierum Icones ac illustrationes, 

 una cum Mycetum ruwenzorensium enumeratione, proximo aeditae 

 erunt. 



Annali di Botanica — Vol. VII. 10 



