100 Ilynienouiycetse, Agaricaceffi, Lencospori», Oinphalia. 



miiHitissimis, 3-0*2-2,5; stipite sursiini albo vel pallirto, deorsum 

 luteo-rufeseenre, afl basiiii atxo-])ruiineo et strigoso, apice leniter 

 pruinoso, 2-3 mni. erasso. 



ITah. :i(l li.uiia (lejecta, Itliaca N. J.. Amer. bor. — Fnngus udus 

 tenax flexibiiis, odore alcabno v. njtroso sed (|uandoque debilis. 



OMPHALIA (Fr.) (}n.'l. - Syll. V ]). 30S, IX i>. 41, XI p. 23, XIY 

 p. St, X\ II p. 21, XXI p. .■)!». 



1. Omphalia Seqiioiariim Murrill, Mycologia 1910, ]). 220, OmphaUna 374 

 iSajinnarnm Murrill, N. Amer. FI. IX, )). 347 (1910). — Fileo inrnn- 

 dibuliformi, 4, ,5 5 cm. lato ; su[)erli('i(' levi, uda, glabra (;olore co- 

 riario, inargiiie minute (n'enato, saepe laccrato ; contextu albo-gri- 

 seo, immutabili, odore V. sapore ])eculiari nullo; lamellis decurren- 

 tibus, insertis, confertis, parum angustis, albis, in sicco griseolis; 

 sporis cllipsoides, levibus, Iiyalinis, 0-7 * 4-5 ; stipite cylindrico, 

 levi, glabro, concolori, firmo, 4-5 cm. longo 3-4 mm. crasso. 



Hab. gregaria ad tenaiii Iiumosam sub arboribus (« redwoods »), 

 Searville Lake, prope Stanford University, California, Amer. bor. 

 (J. Mc Murphy). 



2. Omphalla Jalapensis (Murrill) Murrill, Mycologia 1910, p. 219, Om- 375 

 phalina jalapensis Murrill, X. Amer. Fl. IX, p. 349 (1910). — Pi- 



leo profunde infundibuliformi, usque 3,5 cm, lato et 2 cm. alto ; 

 superficie albida hygropbaua, levi, glabra, margine lobato et irre- 

 gulari, non striato, javentute incurvato ; contextu tenui, albo, fle- 

 xibili, subtenace nutanti, sicco fragili ; lamellis breviter decurren- 

 tibus, determinatis, confertis, angastis, crassiusculis, albis, ])luries 

 insertis, nonnullis etiam furcatis ; sj^oris ovoideis, levibus, hyalinis, 

 5 * 3,5 ; stipite parum compresso, supra dilatato, levi, concolori, 

 basi pubescenti, cavo, 2 cm. longo 3-5 mm. crasso. 



Hai. gT(!garia ad terram humosam in silva uda ]>rimaeva, prope 

 Jalapa, Mexico, Amer. bor. (W. A. et E. L. Mureill). 



3. Omphalla Dawsonii (Murrill) Murrill, M^^cologia, 1910, p. 220, 376 

 Omphalina Daicsonii Murrill, X. Amer. Fl. IX, p. 345 (1910). — 

 Pileo convexo, centro depresso, carnosulo, 3-5 cm. lato ; superficie 

 levi glabra, isabellina v. pallide-fulva, margine concolori non 

 striato, undulato, juventute incurvato ; contextu albo, parum astrin- 

 gente, odore tenui ingratulo; lamellis decurrentibus confertis, an- 

 gustis, tenuibus, sordide albis ; sporis subglobosis, levibus, liyali- 

 nis, 4-0, [JL ; stipite subcarnoso, cyliMdrico, levi, glabro, coucolori, 

 cavo, 7 10 cni. lougo 3-5 mm. crasso, basi mycelio tenaci concreto. 



