Hymenomyceteae, Agaricinese, Leucosporset Tricholoma. 17 



ad 11 cm. lato; stipite, basi incrassata excepta, sequali, cylindraceo, 

 albido dein sordide fulvescente, unicolore, 9-11 cm. alto, circa 1 

 cm. crasso; lamellis distinctis, e subalbo pallidis, tandem flavescente- 

 pallidis, linearibus v. subventricosis, 6-10 mra. lat. ; carne albida; 

 sporis ellipsoideis, 8-10 s5, granulosis; basidiis tereti-clavatis, 28- 

 32^10; cystidiis fusoideis, apice muricellatis, 46-70 s; 10-14. 



Hab. in stercoratis in duraeto Puiratta ad Mustiala Feanise. — 

 Affine T. melaleuco. 



20. Tncholoma Pseudorussula Speg. F. Fueg. d. 5. — Solitarium; pi- ^i 

 leo applanato, centro vix depressulo, glaberrimo, levissimo, quan- 

 doque subcinerescente quandoque rubescente, sa^pius taraen viola- 

 scente, hinc inde raaculato-pallescente, latiusculo, 3,5-4 cm. diam., 

 crassiuscule carnoso, rigido-fragili, cute facile secedente tecto, mar- 

 gine integro, subincurvulo; lamellis albis vel subceraceo-pallescen- 

 tibus, crassiusculis, fragilibus, monomacriis, antice acutis, postice 

 acutato-adnatis, centro latioribus, 1,5 cm. long., 0,5 cm. lat., carne 

 pilei concretis , confertiusculis , acie integerrimis, obtusiusculis ; 

 stipite tereti-obclavato, basi truncato-rotundato, fragili, glaberrimo, 

 levissimo, albo quandoque centrum versus plus minusve roseo vel 

 violascente farcto. 



Hab. in pratis nec non in silvis in Staten Island et in Voces 

 bay Fuegias. — Stipes basi vix radicatus; odor nullus v. vix fa- 

 rinae recentis; sapor parum manifestus subdulcis. Caro pilei rigi- 

 dula alba, illa stipitis flocculoso-spongiosa, candidissima. 



21. Tricholoma iaganlcum Speg. F. Fueg. n. 3. — Solitarium v. sae- 72 

 pius gregarium, subfasciculatum; pileo hemisphserico, regulari vel 

 vix hinc inde depressulo, 2,5-3 cm. diam,, intense pulchreque ca- 

 staneo, levissimo, glaberrirao, subnitente, margine integro promi- 

 nulo, pallescente; lamellis confertiusculis, latiusculis, antice acutis, 

 postice truncato-adnatis, fulvis v. pallide subferrugineis, polyma- 

 criis, acie iategerrimis; stipite farcto, tereti, breviusculo, 5 cm. long., 

 8-10 mra. crass. levissimo v. vix inferne fibrilloso, pileo concolori 

 sub hymenio pallidiore ac incrassatulo, ad quintum superum an- 

 nulato-squarruloso, basi obscuriore, non v. vix turgescente; carne 

 succosa, hygrophana, subcastaneo-pellucida; velo parvulo vix in 

 juventute integro, castaneo, fibrilloso-submembranaceo; sporis ob- 

 ovatis , superne obtuse rotundatis, inferne acutatis, 10:^5, hja- 

 linis, levibus. 



Hab. vulgatum in pratis humosis ac in areolis igniariis prope 



Ushuvaia Fuegise. 



2 



