FUNGORUM

42 Polyporeæ, Boletus.
156. Boletus levis Fr. Bol. p. 14, Epicr. p. 425, Hym. Eur. p. 516.
- Pileo pulvinato, expanso, levi, glabro, margine nudo; stipite
solido, firmo, brevi, corticato, levissimo; tubulis liberis, cinerescen-
tibus, poris minutis, rotundis.
Hab. in Islandia, unde in spiritu vini eximie conservata speci-
mina vidit Fries. - Est e nobilissimis, alii vix affinis, cute stipitis
polita (ut in Collybia radicata) ab omnibus recedens.
157. Boletus griseus Frost in Peck 29 Rep. p. 45. - Pileo sicco,
firmo, sabglabro, griseo vel griseo-nigro; stipite albido vel lute-
scenti, fortiter reticulato, sæpe basi abrupte attenuato luteoque;
tubulis subplanis, adnatis, plerumque circa stipitem leviter depres-
sis, minutis, inæqualibus, subrotundis, albis; carne albida vel gri-
sea; sporis ochraceo-brunneis, oblongis, 10-13 m. long.
Hab. ad ligna dejecta, Sandlake, New York Amer. bor. - Sta-
tura 8-10 cm. adæquans; pileus 5-10 cm. latus; stipes 13-25 mm.
crassus; odor fortis ingratus; pilei color variat sed vulgo nounihil
umbrinus griseus; stipitis reticulationes apice subtiliores, basim ver-
sua crassioros, elongatæ et compositæ; in speciminibus exsiccatis
apicis reticulationes distinctissimæ, ceteræ obsoletm. Cl. Frost for-
mam legit, quam pro huius speciei varietate habet, a typo rece-
dentem tubulis carnosis stipiteque luteo.
158. Boletus nigrellus Peck 29 Rep. p. 44. - Pileo sicco, minuto
tomentosulo, albido; stipite æquali, brevi, levi, pileo coacolore; tu-
bulis planis vel convexis, circa stipitem tantillum depressis, minu-
tis, inæqualibus , subrotundis, ex albido roseis; carne alba immu-
tabili; sporis oblongis, valde uno apice angustatis, 10-13 m. long.
Hab. in silvis, Sandlake, New York Amer. bor. - Statura 8-
10 cm. adæquans; pileus 8-10 cm. latus; stipes 13-21 mm. crass.
159. Boletus marginatus Berk. Dec. 33, p. 9. - Pileo convexo compacto,
subtiliter velutino, margina tenui ab hymenio discreto, in
voluto; stipite brevi tarbinato-tuberoso, subradicato, nigro, non
reticulato, subvelutino; tubulis liberis fuscis, intus pallidis; sporis
subrotundis, pallide ferrugineis.
Hab. ad terram in Australia. - Pileus 12 cm. lat., nigricans;
stipes 3,5-4 cm. long. latusque.
160. Boletus conicus Rav. in B. et C. Cent. N. Am. Fungi n. 41.
- Pileo subconico pulvinato, flavo-flocculento; carne alba immu-
tabili insipida; stipite glabro sursum attenuato, flaveolo; mycelio
albo; hymenio incarnato; poris minoribus, subfimbriatis, angula-
tis; sporis fusiformibus, subferrugineis.
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