Boletus.] ruNGT. 153 



beneath the epidermis with the colour of the pileus, not changing colour, 

 viscid, insipid or subacid. 2\ibes vivid yellow, half-free, not reaching 

 to the extreme margin. Sporides yellow. Stem sometimes short, 

 swelling in the centre, attenuated below, and, as figured by Bulliard, 

 hollow, but sometimes long and equal, beautifully tinged with yellow and 

 rufous. Occasionally spiders' threads hang beneath the tubes, beautifully 

 powdered with the yellow sporules, exactly as in Poli/porus hispidus. 



13. B. edulis, Bull, {escideut Boletus) ; pileus pulvinate 

 smooth, tubes half-free subrotund minute, white soon becoming 

 yellow, stem thick reticulated. Bull t. 60, 494. Pers, Syiu 

 p. 510. Sow. /.111. With. V. 4. p. 278. Tratt. Essb. Scich. 

 t. R. Fr. Syst. 3Iijc. v. 1. ;9. 391. Purt Midi. Fl. v. 2^3. 

 91. 987 c^- V. 3. p. 574. Grev. Fl. Ed. p. 40 k Poques, Hist, 



des Champ, t. 4. /. 2. t. 5 B. hidhosus, Schcvff. t 134, 135— 



B. elephaidimts, t. 277. — B. solidus, Sow, t. 419. — B. hovinus^ 

 With.v. 4. p. 273. 



Woods and pastures, under Oaks. Summer and Autumn. — Pileus 

 6 inches or more broad, pulvinate, at length convexo-expanded, smooth, 

 shining, often rugose and much cracked, dark-umber, pale towards the 

 margin, slightly viscid; extreme margin white, but scarcely downy. 

 Flesh turning a little reddish near the epidermis. Tubes nearly free, 

 at first white, then lemon-coloured, at length dull-yellow, simple, their 

 orifices angular. Sporules large, greenish ochre, much paler than in 

 B. luridus. Stem 4 inches or more high, 2 inches thick, fawn-coloured, 

 incrassated above and below, reticulated. Though neglectetl in this 

 country, it appears to be a most valuable article of food. It resembles 

 very nmch in taste the common nuishroom and is quite as delicate, and 

 might be used with much advantage, as it abounds in seasons when a 

 mushroom is scarcely to be found. Like that, it can be cultivated, but 

 by a nmch more simple process, as it is merely necessary to moisten 

 the ground under oak-trees with water in which a quantity has been 

 allowed to ferment. The only precaution requisite is to fence in the por- 

 tion of ground destined for its production, as deer and j)igs are very 

 fond of it. This method is said to be infallible and is practised in 

 France in the De[)artement des Landcs. Sec Roqucs, Hist, des Champ, 

 p. 10. 



14. B. sc(d)ci\, Bull, (scurfy Boletus) ; pilous pulvinate, tubes 

 free round w iiite, stem firm attenuated rouj^^h with scurfy scales. 

 Bull. t. 132, 489./. 1. Sow. t. 175. Pers. Si/n. p. 505. Fr. 

 Sijst. Jfi/c. V. 1. ;;. 394. Grev. Fl. Ed. p. 405 — B. procerus. 

 Bolt. t. HG.—B. rufus, Svhoff. t. 103.—/?. hovinus, Schaff. 

 t. 104. Purt. V. 2 c*^' 3. ;/. 984.' }\'ith. v. 4. ;;. 275. var, 3, 4 — 

 B. aura?diacus, Bull. t. 2:^0, 489. /. 2. Sow. /. 110. With. 

 V. 4. p. 273. Purt. Midi. Fl. v. 2 <^- 3. n. 983. Pers. Myc. 

 Eur. V. 2. p. 147. — B.fysco-albusy Sow. t, 421. — B. leucophaus, 

 Pers. Myc. Eur. v. 2. p. 140. 



Woods ; siunmer and autumn. Extremely common. Pilrus 3— -7 

 inches or more broad, pulvinate, visciii when moist, vtry variable in 

 colour, white, cinereous, brown, olive, deep orange or vtrniilion, smooth 

 or minutely downy, the down sometimes collected into minute fasci- 

 culate fcculcs ; Jk'sh very thick, but soft, not changeable in young 



