Xerocomellus zelleri

Xerocomellus zelleri, commonly known as Zeller's bolete, is a species of fungus in the family Boletaceae. First described scientifically by American mycologist William Alphonso Murrill in 1912, it has been juggled by various authors to several genera, including Boletus, Boletellus, and Xerocomus. The fruit bodies are distinguished by their dark reddish brown to nearly black caps with uneven surfaces, the yellow pores on the underside of the caps, and the red-streaked yellow stems. The development of the fruit bodies is gymnocarpic, meaning that the hymenium appears and develops to maturity in an exposed state, not enclosed by any protective membrane. Found solely in western North America from British Columbia south to Mexico, the mushroom grows in summer and autumn on the ground, often in Douglas-fir forests or on their margins. It is edible but not choice....read more on Wikipedia.