176 POLYPOREI. 



Boletus. Monstrous forms of B. edulis are often mistaken for it. Spores oval, yel- 



lowish ochre, i4X5mk. W.G.S. Name iraxvs, thick; TTOUS, a foot. Thick- 

 stemmed. Fr. Hym. Eur. p. 506. Syst. Myc. i. /. 390. Sv. dtl. Sv. t. 68. 

 Berk. Out. p. 233. C. Hbk. n. 718. S. My col. Scot. n. 680. Letiz t. 60. 

 Krombh. t. 35. /. 13-15. Ventur. t. 64. / i, 2. B. pachypus Krombh. t. 35. 

 /. 10-12. Sannd. & Sin. t. 17 (wholly white) is perhaps a new species. 



** Departing from the type, of uncertain affinity, &c. 



No British species. 



E. Edules. Stratum of tubes rounded and depressed about 



the stem, 



25. B. edulis Bull. Pileus somewhat brown, pulvinate, smooth, 

 moist ; flesh white, reddish beneath the cuticle, compact then 

 softer. Stem stout, reticulated, pallid- fuscous. Tubes semi- 

 free, elongated, minute, at first white, then yellow and greenish. 



The pileus varies white, grey-rufescent, &c. The stem is sometimes obso- 

 letely reticulated, sometimes curt and bulbous, sometimes elongated'and equal, 

 also rooting. 



In woods, especially beech. Common. July-Nov. 



Pileus 15 cent. (6 in.) and more broad. Stem 10 cent. (4 in.) or more long. 

 5 cent. (2 in.) thick. Spores fusoideo-oblong, bright yellowish, 14-16x4-5.5 

 mk. K. Name edulis, edible. Reckoned one of the most delicious, but the 

 flesh is rather soft when cooked. Bull. t. 60, 494. Fr. Hym. Eur. p. 508. 

 Sv. dtl. Sv. t. 13. Berk. Out. p. 234. C. Hbk. n. 719. S. Mycol. Scot. n. 

 681. Sow. t. in. Sv. Bot. t. 197. Lenz f. 34. Tratt. Austr.f. 34. Krombh. 

 t. 31. Vittad. t. 22. Ventur. t. 8. Vivian, t. 25. Barla t. 34. Hussey i. t. 

 81. Badh. i. t. 3, ii. /. 3-/. i, 2. Price t. 63. Hogg & Johnst. t. ir. Harz. 

 t. 40, 41. Gonn. fir 1 Rab. vii. t. i. Scheeff. t. 134. Rostk. t. 37. 



26. B. sereus Bull. Pileus olivaceous-fuscous, somewhat black- 

 ish, pulvinate, smooth, somewhat pelliculose ; flesh white, becom- 

 ing yellow on exposure to the air. Stem stout, somewhat reticu- 

 lated, yellowish, becoming fuscous at the base. Tubes minute, 

 somewhat free, sulphur-yellow. 



Pileus small. The stem when young is oblongate not bulbous. 



In woods. Surrey. 



Spores oblong, oblique at the base, n-i4x6mk. B. & Br. Name (?s, 

 copper. From the colour. Bull. t. 321. Fr. Hym. Eur. p. 508. B. dr 1 Br. 

 n. 1425. Krombh. t. 36. /. 1-7. Quel. t. 16. /. 2. Rostk. t. 15. Bull. t. 385 

 var. 



27. B. fragrans Vitt. J*y&sw& fuscous-umber > pulvinate, repand, 

 somewhat tomentose, margin inflexed ; flesh yellow, sometimes 

 unchangeable, sometimes becoming green or azure-blue, at length 

 becoming red. Stem stout, at first ovato-bulbous, often fusiform 



