The boletes of Michigan, by Alexander H. Smith and Harry D. Thiers.

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THE BOLETES OF MICHIGAN

B. rubropunctus the hyphae of the subcutis are orange-cinnabar as revived in Melzer's, and false clamps are numerous on the hyphae of the
stipe.
169. Boletus subglabripes Peck
Bull. N. Y. State Mus. 8:112. 1889
Boletus flavipes Peck, Rept. N. Y. State Mus. 39:42. 1886 (non Berk. 1854).
Suillus subglabripes (Peck) Kuntze, Rev. Gen. P1. 3(2):536. 1898.
Ceriomyces subglabripes (Peck) Murrill, Mycologia 1:153. 1909.
Leccinum subglabripes (Peck) Singer, Mycologia 37:799. 1945.
Krombholzia subscabripes Singer, Rev. de Mycol. 3:188. 1938, n. nud.
Illus. PI. 124.
Pileus 4.5-10 cm broad, convex becoming broadly convex to
plano-convex or broadly umbonate, glabrous, dry to moist, dull, often
pitted or somewhat rugose, yellow to ochraceous to clay color or more
rarely dull cinnamon ("warm buff" to "yellow-ocher," "clay color," or
"tawny-olive" to "ochraceous-orange," "buckthorn-brown," or rarely
"Sayal-brown"); margin flaring at times, entire, often decurved. Context
thick (up to 2 cm), firm, whitish to pale yellow, occasionally irregular
areas changing to olive-buff or "citron-yellow" in old specimens where
damaged, typically unchanging when injured (rarely slightly bluish); odor
not distinctive, taste mild to slightly acid, sometimes sweetish.
Tubes deeply and broadly depressed around the stipe, 10-15 mm
deep, yellow ("barium-yellow") in sectioned pilei; pores yellow
("citron-yellow" to "sulphur-yellow"), in age wax-yellow to amberyellow, unchanging when injured, not stuffed when young, small, round,
about 2 per mm, many depressed areas present.
Stipe 5-10 cm long, 10-20 mm thick, equal to ventricose, tapering
slightly toward the base or apex, solid, surface dry, furfuraceous to
scabrous or fibrillose, never reticulate, whitish within at the base but
pale bright yellow in the remainder, cortex sometimes staining reddish in
old basidiocarps, surface pale to bright yellow, occasionally with reddish
stains at the base.
Spore deposit olive to olive-ochraceous brown; spores 11-14 X
3-5 (, smooth, in face view narrowly fusoid, in profile somewhat narrowly inequilateral, pale greenish yellow revived in KOH, merely yellowish in Melzer's, wall less than 0.2,i thick and showing no evidence of an
apical pore.
Basidia 4-spored, 18-26 X 8-10,i clavate, hyaline to yellowish revived in KOH, yellowish in Melzer's. Pleurocystidia rare to scattered,