Genus Boletinus 
have the appearance of a big red tongue protruding from a tree 
trunk, so that the French call it langue de beuf. It is often 
called vegetable beefsteak, from the flesh-like fibre and colour of 
the fresh specimens. When young, the upper side is velvety 
and of a fine peach colour ; later it becomes liver red and loses 
the velvety appearance ; the under surface is flesh coloured, and 
is rough, much like the surface of a tongue, owing to the fact 
that the tubes are free from one another. 
GENUS BOLETINUS 
The spore-bearing surface of the genus Boletinus is cum- 
posed of broad, radiating lamella connected by numerous nar- 
row partitions so as to form large angular pores. The tubes are 
not easily separable from each other and from the portion on 
which they are borne. They are yellowish in colour, and grow 
downward somewhat on the stem. The genera may be distin- 
guished by the following table: 
He Stem Hollows sisisisisnsaiarsteinvores veins pau Hees aes w os Eo eee BoLeTINUS CAVIPES 
2. Stem solid, lateral, or eccentric.......... ... pcataheieianarae thant BoLeTINUS PoROSUS 
3. Stem solid, central. Cap pale yellow and silky............ BOLETINUS DECIPIENS 
4. Stem solid, central. Cap red...... 2... esses eee e ence eee BOLETINUS PALUSTER 
5. Stem solid, central, Cap with red scales..............-.. BoLeTINUS PICTUS 
Painted Boletinus (Edible) 
Boletinus pictus 
Cap or Pileus—Convex or nearly plane; at first covered with red 
matted fibres, which soon divide tnto small scales, so as to 
reveal the yellow colour of the cap beneath. 2-4 inches wide. 
Tubes—Pale yellow, or pale yellow tinged with brown. Not 
easily separated from the cap. 
Veil—Webby, concealing the tubes of the young plant. 
Stem or Stipe—Solid, with scales and colour similar to those of the 
cap. 134-3 inches long. 
Ring or Annulus—Webby; evident in some specimens. 
Spores—Pale yellow tinged with brown. 
Flesh—Y ellowish, often assuming reddish tints when bruised. 
Habitat—Woods and mossy swamps. 
Cav’ -Y-pés Po-ro'-stis Dé-clp’-1-éns Pa-lis’-tér Pic'-tiis 
103 
