Hollow Bolete Suillus cavipes (Opat.) A.H. Sm. & Thiers syn. Boletinus cavipes (Opat.) Kalchbr. (illustrated 50% life size) Cap 3–8cm across, convex or slightly umbonate at first, then expanding, often becoming irregular or lobed at the margin; entirely golden-yellow or more often rusty-tawny to umber; suede-like or even felty-scaly. Stem 40–80×10–20mm; lemon-yellow with an indistinct net above the white, cottony ring, darker and covered in brownish fibrils below. Flesh whitish, tinged yellow in cap, sometimes pinkish in stem; taste and smell pleasant. Tubes short; yellowish then flushed olivaceous. Pores large, angular; concolorous with tubes. Spores 7–10×3–4¼, subcylindrical to fusiform. Spore print olivaceous. Habitat with larch; late summer. Very rare, endangered on Red Data List. Edible but poor.
