Helen M. Gilkey

Tuberales of North America

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A Revision of the Tuberales of California

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Gilkey's Weeds of the Pacific Northwest

GUIDE TO IDENTIFYING NORTHWEST WEEDS....

Winter Twigs

A Wintertime Key to Deciduous Trees and Shrubs of Northwestern Oregon and Western Washington

A WINTERTIME GUIDE TO DECIDUOUS TREES AND SHRUBS OF NORTHWESTERN OREGON AND WESTERN WASHINGTON....

Handbook of Northwest Flowering Plants

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Aquatic Plants of the Pacific Northwest

With Vegetative Keys

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Handbook of Northwestern Plants

The glossary of botanical terms, illustrations of different types of leaves and flowers, and hundreds of line drawings that highlight the identifying ...

Aquatic Plants of the Pacific Northwest

With Vegetative Keys

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Weeds of the Pacific Northwest

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A Spring Flora of Northwestern Oregon

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Handbook of Northwestern Plants

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Handbook of Northwest Flowering Plants

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Northwestern American Plants

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Phytomorula Regularis, a Symmetrical Protophyte Related to Coelastrum

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Winter Twigs. (A Wintertime Key to Deciduous Trees and Shrubs of Northwestern Oregon and Western Washington.) [With Illustrations.].

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Aquatic Plants of the Pacific Northwest

With Vegetative Keys. By A.N. Steward, L.J. Dennis, H.M. Gilkey

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