A Contribution toward a monograph of North American species of Suillus the cloth on spine has

the cloth on spine has been professionally rebacked with no loss to cloth

the text and fine color plates are very bright and clean as is the fine one-half morocco binding by George Bayntun

lettered in black on the spine and with butterflies in black on the front cover

Publisher's original tan printed wrappers

A Contribution toward a monograph of North American species of Suillus the cloth on spine hasPp. v, 116; 46 full page black and white plates. Original tan printed wrappers, lettered in black on the front cover and with illustrations of three mushrooms on the front cover, 8vo. There is no denying that the species of Suillus are one of the most confusing groups of fleshy fungi in North America. This monograph does not introduce many new characters but rather a better evaluation of the features emphasized by previous authors. This volume is from