j 



36 Hymenomycetse, Agaricacea', Lencosporse, Pleurot,us. 



20 V 8, hyalinis ; sporis ellipsoifleo-ovatis, hyalinis, levibus, non v 

 miniite guttulatis, 8-10 « 6-G. 



Hah. vulgata ad terram pingueni in umbrosis inter gramina, 

 La Plata Argentinre. 



17. Omphalia subfibula P. Henn. Monsunia I, 1899, p. 156. — Pileo ' 

 monibrana<^eo, tenui, subcuciillato campanulato, centro deprcsso 

 umbilicato, radiato-sulcato, albo, sulcis cinerescentibus, V/ ^ mni. 

 diam., margine crispulo; stipite setaceo, albo, nitcnte, 3-3'/, em. 

 longo, vix '/^ mm. crasso, basi incras.sato, albo-strigoso ; lamellis 

 arcuatis, longe decurrentibus, subdistantibus, aibis; basidiis clava- 

 tis, 18-22 «4-5; sporis oblonge ovoideis v. ellipsoidei.'?, hyaliuis, 

 6-8^3'/,-4. 



Hah. ad caules et folia putre-^contia, Tjibodas ins. Jav;i^ (Flei- 

 scher). — 0. Fihnlw BuJl. affinis, sod difFert habitatione, basi sti- J 

 pitis etc 



18. Omphalia SteHa Bomm. et Rouss. Champ. exped. antarct. p. 040 ^ 

 (BuII. Acad. roy. de Belg. 1900). — Pileo hemisph^vrico-expanso, 

 glabro, diaphano, medio fuscescente, 1 mm. diam.; stipite capil- 

 lari glabro, 10-12 mm. longo, basi in bulbillum fuscum vix con- 

 spicuum terminata; lamellis 12, pliciformibus, adnatis, non sinua- 

 tis, ex quibus 6 sunt visibiles centro pilei concolores et 6 hyali- 

 n?e vix perspicuse. 



Hah. ad ramos emortuos, Lapatata, Canal de Beagle Fuegiaj. , 

 — Affinis 0. polijndelphfr Lasc1i,sed pileo non sulcato nec lioccu- ' 

 loso et basi stipitis inilatula recedit. 



PLEUROTUS Fr. — Syll. V, p. 339, IX, p. 45, XI, p. 24, XIV, 



p. 88. 



1. Pleurotus ostreatus Jacq. — Sacc. Syll V, p. 355. — var. stlpi- i 

 tatus Scal. Pg. dclla Sicilia orient., p. 20 '1900). — Excentricus, 

 velo nullo; pileo carnoso-molli, primum convoxo, demum subplano, 

 fuligineo-brunneo, margine sinuato v. integro; stipite distincto, 

 farcto, basi paullo vei iion irjcrassato, albicante; lamellis latiuscu- 

 lis, sinuatis, albis, decurreutibus. 



Hdb. ad truncos in SiciHa. 



2. Pieurotus cretaceus Massee Bull. Miscell. Inforn). Roy- G-ard. ' 

 Kew, p. 165 (1899). — Pileo carnoso lento, in sieco vigido, sub- 

 rotundo, uno lat(>re producto, margine involuto, plano, convexo, 

 saepe tumuloso, glabro, albido, 6-9 cm diam.; lamellis confertis 



