NOTICES OF NORTH AMERICAN FUNGI. 53 



346. Didymium Ravenelii. B. & C— Stipite subaequ all laBvibrun- 



neo ; peridio globoso ambrino ; floccis sporisque aigris. Cur. Sup. 

 Sulphur springs. Ravenel. No. 1513. 



Stem nearly equal, or somewhat attenuated, penetrating slightly, 

 even, dark brown ; pcridium globose, umber, with a few very minute 

 metallic scales or particles ; flocci and spores black. Stem with 

 the head about T \y inch high. 



347. Didymium pus ilium. B. t j- C. — Stipite sursum attcnuato 

 luteo, peridio nutante globoso farinaceo, columella nulla, floccis albis 

 parcis ; sporis atropurpureis lwvibus. Car. Inf. No. 1345. On dead 

 herbaceous stems. 



A minute species, about j^ inch high. Stem attenuated upwards, 

 yellow ; peridium globose, nodding, farinaceous ; columella none ; 

 flocci few, white ; spores even, black-purple. 



348. Didymium chxysopeplum. B. & C - Stipite niveo leviter 

 sulcato sursum attcnuato e basi orbiculari oriundo ; peridio globoso, 

 exteriore furfuraceo fulvo, interiore metallico ; floccis albis ; sporis 

 nigris. On dead leaves. Car. Inf. No. 1202. 



Stem snow-white, springing from a little orbicular disc, slightly 

 sulcate, attenuated upwards ; head globose, slightly umbilicate, 

 outer coat tawny, furfuraceous, inner metallic ; flocci white, spores 

 black. 



349. Didymium megalospoxum. B. $ C. — Stipite gracili rufo ; 

 sursum attcnuato ; peridio umbilicato subhemispherico rufo albo- 

 pulverulento ; floccis parcis albis ; sporis majoribus fuscis. On dead 

 oak leaves. Car. Inf. No. 1205. 



A minute species, about 2 \ inch high ; stem dark rufous, slender, 

 attenuated upwards ; peridium subhemispherical, umbilicate, rufous, 

 with a white dusty bloom ; flocci few, white ; spores brown, large. 



350. Didymium obrusseum. B. <k C— Hypothallo tenuissimo 

 scarioso ; stipite aureo deorsum incrassato hyalino ; peridio albo 

 vel citrino, floccis candidis, sporis aviis. Linn. Soc. Journ., x., p. 348. 

 On leaves of Gonolobus, Texas, Lindheimer. New Orleans, Drum- 

 mond. 



Stem golden -yellow, hyaline, attenuated upwards, springing from 

 a very thin membranous hypothallus ; peridium white or lemon- 

 coloured ; flocci white, spores black. 



* Didymium polymoxphum. Mont.— Cub. p. 314. D. polyce- 

 phalwn, Rav. On dead leaves. Car. Inf. No. 2587. Rav. No. 1673. 

 New Jersey. No. 4701. . ig 



Fries's Epicrisis. — A new and revised edition of this valuable 

 work, by its venerable author, has already commenced, and we may 

 hope soon to hear of its publication. 



