Microporellus obovatus (Jungh.) Ryvarden 1972

Polyporus tuba Berk. & Curt. Jour. I,inn. Soc. 10 : 305. 1868
Pileus cup-shaped, like a Peziza^ with a very long stipe, and very thick for its size, 1-1.5X0-5-1 cm.; surface white, yellowish-brown when dry, glabrous, smooth or radiaterugose ; margin abruptly acute, entire, slightly revolute when dry : context pallid, firm, not elastic, 5 mm. or more thick; tubes decurrent, short, yellowish, mouths small, 4 to a mm., edges thin, at length elongate : spores not examined: stipe slender, central, dilated above, concolorous, rough, striate, tough, 3-4 cm. long, 2-4 mm. thick.
Type locality : Cuba.
Habitat : On dead wood.
Distribution; Known only from the type locality.

Microporellus porphyritis (Berk.) Murrill
Polyporus porphyrias Berk. Jour. Bot. & Kew Misc. 8 ; 196. 1856.
Pileus thin, coriaceous, flabelliform, 4-5 X 5-6 X 0.1-0.3 cm. ; surface pelliculose, ochraceous to light-bay, zonate, glabrous ; margin thin, ochraceous, undulate : context fibrouscorky, 1-1,5 mm. thick, pallid; tubes short, less than 1 mm., mouths minute, 5-6 to a mm., pallid to discolored, very regular, subangular, edges thin, entire, at first obtuse, becoming acute : spores not examined : stipe variable, short, slightly lighter than the pileus, 5-10 mm, long, 5-8 mm. thick, resembling the pileus in surface and substance.
Type locality : Panure, Brazil, Habitat : Dead wood. Distribution: Cuba; also in Brazil.

Microporellus obovatus is a species of poroid fungus in the family Polyporaceae. It has been found in French Guiana, Guadeloupe, various locales in Africa, India, and the United States.