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Description type:Original description 
Description:Poria rubens Overholts and Lowe, n. sp. (Fig. 2, F)
Annual, effused up to 15 cm., soft and waxy when fresh, hard and brittle when dry, readily separable, taste and odor not distinctive ; margin rather narrow, minutely strigose or matted or radiately fibrous, concolorous or paler to whitish; surface of the pores orange, "Salmon orange," in older portions and on drying dull purplish, or "Russet-vinaceous" ; tubes up to 8 mm. long, briefly lavender in KOH ; pores more or less regularly angular, averaging 3 per mm., the dissepiments becoming thin, edge entire or sometimes white-fimbriate ; hymenium rather distinct from the tramal tissue; cystidia none; basidia narrowly clavate, 13-19 x 5-6 µm; spores hyaline, smooth, oblong or so short as to appear oblongellipsoid, 3.5-5 x 2-2.5 µm; subiculum shading from dissepiment color to nearly white next the substratum, up to 0.5 mm. thick, with much fine granular matter in microscopic section, the hyphae rarely branched, thick- or thin-walled, with rare clamps, 3-4 (6) µm diameter, readily separated by pressure; tramal tissue similar. On the wood of coniferous trees; type collected at Owl Creek, British Columbia, by J. R. Hansbrough (n. 40660), June 15, 1930, and deposited in Overholts Herbarium as n. 13984; known also from New Hampshire (D. H. Linder, Herb. Farlow), from New York, Lowe 2392, from Michigan (D. V. Baxter), and from Lake Timagami, Ontario (S. M. Pady).
Poria carnicolor Baxter appears to be very similar except for its larger spores, 5.5-7 x 2-3 µm
 
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