— 137 — 



non ad tertium superum incrassatulus, superne laevis, 

 medio saepe in jmentute minute yelutino-furfurellus, 

 inferné laevis non v. vix floccoso-radicatus, colore 

 liidens ex albo v, roseo ad melleum vergens, farctus ; 

 aQulus parte tertia supera stipitis adnatus, descendens, 

 membranaceo-subfurfurellus, facillime evanescens. 



Caro pilei ad marginem nuUa, dein gradatim incras- 

 satula cum illa spilitis continua, alba, in stipite fibrosa. 



Sporae e globoso ovoideae, grosse 1-guttulatae, basi 

 acute angulosae (6,5-7 x 4,5-5 ¡j.), hyalinae. 



2. Agaricus (í)'íc/io/oma) alratüs Fr. — Hym.eurp. p. 50, 



n. 122. 

 Hab. Ad dunas marittimas in Penguin rookery in 



Staten islancl, Mart. 1882, 

 Obs. Specimina senescentia sed nullo modo ab europeis 



recedentia. 



3. Agaricus (tricholoma) iagainicüs Speg. (n, sp.) 

 Dia.g. Solitarius v. saepius gregarius subfasciculatusve ; 



pileus hemisphaericus, regularis v. yíx hinc inde de- 

 pressulus (2,5-3" diam.) intense pulclireque castaneus, 

 laevissimus, glaberrimus, subnitens, margine integer 

 prominulus pallescens ; lamellae confertiusculae, latiu- 

 sculae, antice acutae, posticetruncato-adnatae, fulvae v. 

 pallide subferrugineae, polymacriae, acie integerrimae ; 

 stipes farctus, teres, breviusculus (5" long. x 8-10'" 

 crass.) laevissimus v. vix inferné fibrillosus, pileo con- 

 color, subhymenio pallidiorac incrassatulus. adquintum 

 superum anulato-squarrulosus, basi obscurior non y. 

 vix turgescens. Caro succosa, hygrophana, subcastaneo- 

 pellucida. Yelum parvulum tíx in juventute integrum, 

 castaneum, fibrilloso-submembranaceum. 

 Hab. Yulgatus in pratis humosis ac in areolis ignariis 

 prope Ushuvaia, Maj. 1882. 



