172 FOLYPOREI. 



Boletus. yellow, becoming more or less azure-blue when broken, but 

 golden when exposed to the air, here and there reddish under 

 the tubes. Stem 2.5-5 cent. (1-2 in.) long, 2.5 cent. (1 in.) thick, 

 firm, ventricose, even, smooth, sulphur-yellow, at length becom- 

 ing dingy ferruginous. Tubes adnato-decurrent, short, 2-4 mm. 

 (1-2 lin.) long, adhering more closely than usual, changeable on 

 being touched, at length with ferruginous spots ; pores minute, 

 compound, sulphur-yellow, at length becoming green. 



Springing from a broadly expanded, golden, woolly mycelium, it is very 

 caespitose, with the appearance of Ag. spectabilis. 



Among sawdust. Loch-an-Eilan, Rothiemurchus. Sept. 



Spores light yellow then ochraceous. Fr. Name — sulphur, brimstone. 

 Sulphur-yellow. Fr. Hym. Eur. p. 502. B. & Br. n. 1424. S. Mycol. 

 Scot. ?i. 672. 



13. B. striaepes Seer. — Pileus olivaceous, the cuticle ferrugin- 

 ous within, convex then plane, soft, silky. Stem firm, curved, 

 yellow, with fuscous-black stria, fuscous-rufescent at the base. 

 Tubes adnate, angular, greenish ; pores minute, yellow. 



Flesh white, yellow at the tubes, and at the base of the stem which is exter- 

 nally of the same colour and velvety. 



In woods. Rare. 



Flesh sparingly changing to blue. M.J.B. Name — stria, a line; pes, a 

 foot. From the striate stem. Seer. — Fr. Hym. Eur. p. 502. Berk. Out. p. 

 232. C. Hbk. 71. 712. Battar. t. 29. C. 



14. B. chrysenteron Fr. — Pileus fuscous or somewhat brick- 

 colour, convexo-plane, soft, floccoso-sqnamulosej flesh yellow, red 

 beneath the cuticle. Stem somewhat equal, rigid, fibroso-striate, 

 scarlet or light yellow. Tubes somewhat adnate; pores rather 

 large, angular, unequal, greenish-yellow. 



The pileus is often cracked into patches, and then the cracks are scarlet. 

 Varying in stature like its allies, with the pileus becoming smooth and more 

 brightly coloured, with the flesh becoming somewhat azure-blue, and with 

 the tubes depressed round the stem. 



In woods and open ground. Common. July-Nov. 



Edible. Pileus 5-7.5 cent. (2-3 in.) or more broad. Stem 7.5 cent. (3 in.) 

 long, 6-12 mm. (%-%, in.) thick, easily distinguished by the red cracks. 

 Spores spindle-shaped, pale warm brown, 14-2 mk. W.G.S. Name — xpveros, 

 gold ; ei/repa, inward parts. From its yellow flesh. Fr. Hym. Eur. p. 502. 

 Berk. Out. p. 232. C. Hbk. n. 713. S. Mycol. Scot. n. 673. Bull. t. 490./. 

 3. Hussey i. t. 5. Quel. t. 16./. 4. 



15. B. subtomentosus Linn. — Pileus somewhat olivaceous, of 

 the same colour beneath the cuticle, pulvinato-expanded, soft, dry, 



