Order Hymenomycetes Tribe Pileati  

Boletus russellii Frost.  

Species Characters. B. russellii. Pileus at first hemispherical then expanded, pulvinate, fasciculate red pilose on a yellow ground, two to five inches across; tubes yellowish green, turn darker in age, large adnate or nearly so, at times a circular depression around the stem; stem 6 to 7 inches high, larger at base, attenuated at the apex, strongly marked with a sharp rough red network giving the stipe a ragged appearance; flesh yellowish white unchanging when cut or broken. Spores 0.00033 × 0.00056’ inch. Found in woods near Baltimore, Maryland, July–August 1877. One of the plants as shown in the above sketch had Polyporus splendens, & what I took to be Nyctalis asterophora, growing upon the pileus. The measure of the spores in the above plant does not agree with Prof. Peck’s measure given in the “Bulletin.” I drew them, as I thought, very precisely with the aid of micrometer.