No. 104.] 59 
plant. These variations make it difficult to accurately describe the 
species and to satisfactorily identify them from the published descrip- 
tions. Some of them, by reviving under the influence of moisture 
and by the tenacity of their substance, indicate an aflinity with the 
genus Panus and its allies. Someof the larger stout-stemmed species 
occasionally have the stem nearly or quite central in which case they 
might be taken for species of Tricholoma, though their lignatile in- 
stead of terrestrial habitat would be an indication of their real affinity, 
but not a wholly reliable one, since some species of Tricholoma grow 
on wood. By their white spores they are separated from the otherwise 
similar Claudopodes and Crepidoti. Two species, P. sapidus and 
P. euosmus have pale lilac-tinted spores, but these can scarcely justify 
the removal of these plants to any genus having colored spores, since 
they would harmonize no better there than here. Indeed there is 
room for doubt if either of these supposed species is more than a 
variety of P. ostreatus. Several species have valuable esculent quali- 
ties. Fries has divided the genus into three sections, which for 
convenience we have adopted in the arrangement of our New York 
Pleuroti. He names them respectively, EXCENTRICI, DIMIDIATI and 
RESUPINATI. 
Synopsis of the Species. 
Stem eccentric pileus entire or marginate behind..... aierah\alelafele tgelelare jets men Femi 
Stem none or short, pileus sessile or not marginate Bebraean aegis a 
1. Lamelle adnate or emarginate, not MeCUERSTEN | (Le sen eee ecuote Bene ere 
1. Lamelle distinctly decurrent. ft) fucose che tle Soueod nob Ces Bea SIC OSE Ayia! 
ep loaTINe Lec amy Ube aera oral Boks ousranccalatele cial eseltiis (eis; ale\e Tdic Hol eons Bocoase 3 
2. Mame lies yellow ic\yssie cuts ayes ores Dee aie Uieaaire dbahorah ayers it shes CPs sulphureoides. 
3. Odor farinaceous, spores elliptical.......... ...- AObLeaacodbdodE P. lignatilis. 
8. Odor not farinaceous, Seon PAULI aii et alii a iol 8 oievote eae a e'e) as. 's 0 P. ulmarius. 
4, Pileus slightly areolate....... Adve omnnee cideiocMdone onc mp iercrois P. subareolatus. 
4. Pileus not areolate...... Sreeiststcavetata is cinvBUyiate cassia « <1 joes i avalveloreterererea gens eRe tO 
5. Spores dull lilac.... ..... soccndd -boomanubabpona: mGls iceieinlerelaene SUUDVOILS 
5) Sporesiwhite- ca jeaese ess a. 3 good bere ee eaters Sialefe ah edtaho clagete aioe 6 
6. Lamelle anastomosing at the base..... Sel epaietiejescisreineke oe Sp obGa8 P. ostreatus. 
Game lila iehie ene Ge MOMS er an). alelSalaielsig sc) o/ele slecne's piasses sishiieie He a= P. salignus. 
7. Pileus never resupinate, generally with a short lateral stem or stem- ~ 
LIN Eat) OFTEN aise eum Sy AR AE Bievacaratarecyenekent a srsiehenereRetave 
7. Pileus at first resupinate, generally sessile......... ceisler elev olksyeieieeenets ll 
8. Pileus viscid when young or moist’. .......s....-.. wc aceucdecest. SErOUNUS, 
ees US AGT WIRCI Maer cas iil) Liat fe wiz asin V aralaiole's Gipielere s\aiwseie's sircjeteleyeecelel evar eae 
. 9. Lamelle gray, subdistant, stem not compressed ........ oP. tremulus. 
9. Lamellae white, crowded, stem compressed....... Ad GAaade ston oabakeedie 
10. Plant growing on the ground.......... seessee scene Semin eels Pe spath ulatus. 
10. Plant growing on decaying OOM ye nmtalaieratsielerals Bemisia stcleleratens PR: danopisucls 
11. Pileus w Hip Rivarehelatel sets ont feral sb bimeaudod Boecacecnou ces 12 
Die Pileusinion, witnbe gastos cise «e's olsbeitieratbisle « aleerehateraiole Vsieheeraon suaaersloe 13 
dep Paleusigne soGhiarwnore: Lames ai.) 0.4 i Malas wiesinselo'eeajs'e sieieeae P. porrigens. 
12. Pileus small, less than one inch long Or broad «ci. Biteah okeveh ene ei P. septicus. 
1B Lamellze ced onlinss chr Ave liken wats] Ney AAO as Air Aa aiaiad noe P.atroceruleus. 
13. Lamelle cinereous, livid-brown or blackish... Hib Sooo DURE MAB! IS \6 14 
14, Pileus even or slightly striate on the margin........... NS Mai P. atropellitus. 
14. Pileus plicate-striate, black ............ RY Warners eacbanemietalane eve. srs Berane ae P. niger. 
14, Pileus striate, cinereous or livid-brown.... ......... bert tra tae ans P. striatulus. 
Pileus entire or with a thin margin on one side, stem distinct, eccen- 
tric or lateral. 
oo 
