to light yellow, and turns slightly blue with exposure. The odor is not distinctive (although it has been described as "musty") and the taste is mild. Microscopic characteristics The spores are olivaceous-brown in medium to heavy deposit. They are inamyloid, almond-shaped, contain one or more oil droplets, and measure 17.5–22.2 by 6.4-8 µm. The spore wall is 0.5–1 µm thick, with 12–14 longitudinal ridges. These ridges are less than 1 µm tall, occasionally bifurcating, converging at poles, with minute cross-striae. Although these cross-striae are visible when observed with light microscopy, they are not evident when viewed with scanning electron microscopy. The hilar appendage (the region of a spore which attaches to the basidium via the sterigma) is 0.3–1 µm long. The basidia are four-spored, club-shaped, and have numerous refractive globules; they measure 39–57 by 11–15 µm. The pleurocystidia (cystidia on the face of a gill) are 42–47 by 8-12 µm, swollen and beaked, slightly capitate. They are abundant, arising from the subhymenium, projecting 19.3–29.6 µm above the hymenial palisade, thin-walled, hyaline, and devoid of refractive contents. The cheilocystidia (cystidia on the edge of a gill) are 19–42 by 5–11 µm, swollen, cylindrical to narrowly cub-shaped, thin-walled, and infrequent. The flesh of the hymenium is boletoid and strongly divergent (composed of different tissue layers). The mediostratum (middle tissue layer) is 24.7–45.7 µm wide, and made of many parallel, slightly interwoven hyphae. The lateral stratum hyphae are 4.4–8.4 µm wide, hyaline, gelatinized in a dilute solution of potassium hydroxide (KOH), and regularly septate. The cap cuticle is a densely interwoven trichodermial palisade (an erect, roughly parallel chains of closely packed cells) of cylindrical elements with inflated terminal cells. The terminal cells are 23.5–51.9 by 9.4–16.8 µm, inamyloid, cylindrical to club-shaped, interwoven, and concentrated on the squamules. The marginal appendiculae are composed of wefts of interwoven inflated hyphae, some with faint golden spirally arranged encrusting pigments that are evident when mounted in water, KOH, and Melzer's reagent. The flesh of the cap is composed of highly interwoven hyphae measuring 7.4–11.1 µm wide that are hyaline in water, gelatinized and hyaline in KOH, and regularly septate. The stipitipellis (stem cuticle) is a trichodermial palisade of cylindrical elements with inflated terminal cells. The terminal cells project 30.4–63 µm, and they are cylindrical to club-shaped, occasionally with an abrupt tapering point. The flesh of the stem is made of densely interwoven hyphae that are 4.9–7.2 µm