558 BOLETUS 



I. Pores angular, or large, rarely round, often unequal, or toothed; 

 tubes often compound, sometimes connate, long or rather short, 

 more or less adnate, sometimes decurrent, rarely slightly sinuate. 

 P. dry, glabrous, tomentose, silky or glutinous. St. often slightly 

 thick, sometimes furnished with a ring, rarely reticulate at the 

 apex. Plants of medium, or small size, rarely large. 



A. P. glutinous, or viscid, at least in wet weather, never pruinosely 

 granular. Pores, tubes, and flesh of various colours. 



1. St. annulate. 

 *Pores yellow; spores yellow olivaceous. 



1840. B. sphaerocephalus Barla. Barla, Champ. Nice, t. 36. 



<r<f>alpa, a ball; K^a\rj, head. 



P. 10-20 cm., ochraceous yellow, deeper coloured at the centre, and 

 sometimes tinged with brown, globose, viscid; margin light yellow, ap- 

 pendiculate with fragments of the ring. St. 4-6 x 3-4 cm., tawny 

 yellow, becoming darker, furrowed. Ring yellowish, membranaceous, 

 shaggy, usually fugacious. Tubes bright yellow, becoming tawny or 

 brownish with age, short, decurrent; orifice of pores round, or 

 angular. Flesh light yellow, bluish under the cuticle, very thick, 

 soft, watery. Spores olivaceous, fusiform, 8-10 x 3-4/z, 2-guttulate. 

 On the ground, and on rotten sawdust. Sept. Oct. Uncommon. 

 (v.v.) 



1841. B. luteus (Linn.) Fr. Holland, Champ, t. 78, no. 174. 



Luteus, yellow. 



P. 4-14 cm., fuscous with the dark separating gluten, becoming paler, 

 convex, gibbous, then pulvinate. St. 5-10 x 2-3 cm., whitish, be- 

 coming fuscous below the ring, apex light yellow and granular, equal, 

 firm. Ring cream colour, becoming fuscous, membranaceous, large. 

 Tubes yellow, adnate; orifice of pores yellow, round. Flesh whitish, 

 or yellowish, thick, soft. Spores yellowish brown, elliptic-fusiform, 

 8-10 x 3-3-5/>i, 1-3-guttulate. Taste pleasant. Edible. Coniferous 

 woods, and under conifers. June Dec. Common, (v.v.) 



1842. B. elegans (Schum.) Fr. Grev. Scot. Crypt. Fl. 1. 183, as Boletus 

 luteus. Elegans, nice. 



P. 4-10 cm., golden, or inclining to ferruginous, convexo-plane, 

 viscid. St. 5-7 x 1-5-2 cm., golden, then rufescent, firm, unequal, apex 

 reticulate with granules. Ring cream colour, often torn and fugacious. 

 Tubes golden-sulphur-yellow, decurrent; orifice of pores angular. Flesh 

 light yellowish, soft. Spores yellowish, oblong elliptic, 8-9 x 3-3-5^,, 

 2-4-guttulate. Taste pleasant. Edible. Coniferous woods, and under 

 conifers. May Dec. Common, (v.v.) 



