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 Add this item to the list  Omphalopsis subimmaculata Murrill sp. nov.
Page number:315 
Description type:Original description 
Description:Omphalopsis subimmaculata Murrill, sp. nov.
Pileus small, convex, slightly depressed at the center, cespitose, reaching 8 mm. broad; surface smooth, glabrous, finely striate nearly to the center, pure-snow-white, margin entire, appressed when young; lamellae long-decurrent, distant, rather narrow, inserted, white; stipe very slender, cylindric, hollow, white, minutely whitish-pruinose to subglabrous, 2 cm. long, 0.5 mm. thick.
Type collected on dead wood in woods near Seattle, Washington, October 20-November 1, 1911, W. A. Murrill 688 (herb. N. Y. Bot. Gard.).
Distribution; Known only from the type locality.
Taxon name: