≡ Russula insignis Burl.
≡ Russula insignita Burl.
28. Russula insignis Burlingham, sp. nov.
Pileus convex to nearly plane or depressed, up to 8.2 cm broad; surface cream-white in the outer portion, darker dull-yellow at the center, pruinose to glabrous on the disk, minutely granular from the disk to the extreme margin, with the pellicle separable only on the margin, if viscid, soon dry and unpolished; margin striatulate when mature, slow in expanding: context firm, white, mild and agreeable in taste; lamellae white, mostly equal, occasionally forked, rounded at the outer ends, adnexed, close, thin, broad; stipe scurfy or squamulose with yellow nearly to the apex, nearly white at the apex, entirely dark-dull-yellow at the base, attenuate upward, loosely stuffed, dry, up to 7.5 cm. long, 2.5 cm. thick: spores white, elliptic, echinulate, 6.5 × 8.5 µ.
Type collected in swampy mixed woods at Stow, Massachusetts, August 17, 1913, Simon Davis 1-1913 (herb. Burlingham).
Holotypus: Herb. Burlingham: Simon Davis 1-1913
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