430 Rev. M. J. Berkeley and Rev. M. A. Curtis on new 



disposed to crack, sprinkled with copious yellow dust. Flesh 

 yellow, tasteless. Mycelium yellow. Stem short, varying in 

 thickness, sometimes 1^ inch in diameter, yellowish tinged with 

 red, iri'egular, contracted below. Veil none. Hymenium rich 

 red-brown. Tubes angular, adnate, slightly decurrent. Spores 

 ochraceous, dingy, oblong, minute. 



A very splendid species, remarkable for its pulverulent pileus 

 and habit. It resembles B. variegatus. The dust, it is to be 

 observed, is not due to the presence of Sepedonium. 



40. Boletus decipiens, n. s. Pileo siceo pallide flavido sub 

 lente sericeo; carne alutacea; stipite sequali spongioso; velo 

 floccoso; hymenioflavo, poroso. Curt. no. 1312. In thin woods, 

 Aug., South Carolina. 



Pileus 2 inches across, rather dry, minutely silky, whitish yel- 

 low or pale buff; flesh buff, ^ of an inch thick. Stem 2-2^ inches 

 high, 3-4 lines thick, solid but spongy. Veil evanescent, floccose, 

 adhering for a time to the margin. Hymenium plane or rather 

 concave, yellow, consisting of large unequal flexuous tubes. 

 Spores ochraceo-ferruginous, oblong, rather minute. 



This is so like Paxillus porosus, Berk., when dry, that it is 

 scarcely distinguishable without examining the spores, which are 

 very different. Its affinities are however clearly with B. flavidus 

 and its allies, from which it is distinguished by its large radiating 

 pores resembling multiseptate gills. 



41. Boletus conicus, Rav. MSS. Pileo subconico flavo-floc- 

 culento; carne alba immutabili: stipite glabro sursum atte- 

 nuate ', hymenio incarnato ; poris minoribus. Curt. no. 2929. 

 In damp pine woods. South Carolina, H. W. Ravenel, Esq. 



Pileus 1-2 inches across, pulvinate, subconical, clothed with 

 fasciculate adpressed yellowish flocci. Flesh white, not changing 

 when cut, tasteless. Stem 2 inches high, ^ an inch thick, pale 

 yellow, smooth, attenuated upwards. Mycelium white. Hyme- 

 nium ventricose, flesh-coloured, at length darker from the spores ; 

 tubes small, subfimbriate, angular. Spores fusiform, subfer- 

 ruginous. 



Allied to B. scaher, but differing in the fasciculato-floccose 

 pileus, smaller tubes, and smooth stem. 



^Polyporus lepideus, Fr. Ep. p. 430 ; Curt. no. 3068. On 

 dead wood. New York, Dr. Sartwell, 



The stem in the American specimens is sometimes reticulate 

 and sometimes even. The pileus is more tawny, but the whole 

 plant agrees in other respects with an authentic specimen of this 

 very rare species. 



42. Polyporus (Mesopus) persicinus, n. s. . Stipite centrali obeso 

 pileo crasso maximo pulvinato centro depresso velutino fulvo- 

 brunneo quandoque purpurascenti confluenti ; contextu aquoso- 



