Mathiasella, A New Genus of North American Unbelliferae [Pamphlet] Lincoln Constance & C. Leo Hitchcock

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Studies in the Capparidaceae - IV: Polanisia RAF. [Paperback] Hugh H. Iltis

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Lincoln Constance & James Affolter

A Trio of New Tauschias (Umbelliferae) from Eastern Mexico by Lincoln Constance & James Affolter

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Studies in the Capparidaceae II. The Mexican Species of Cleomella: Taxonomy and Evolution [Paperback] Hugh H. Iltis

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Lincoln Constance

Three New Species of Eryngium (Umbelliferae) from Tropical South America by Lincoln Constance

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Lincoln Constance

Four New Species of Eryngium (umbelliferae) from Mexico by Lincoln Constance

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Lincoln Constance & Robert Bye

New Chihuahaun Umbelliferae by Lincoln Constance & Robert Bye

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Martin H. Zimmermann and P. B. Tomlinson

Vascular Patterns in Palm Stems: Variations of the Rhapis Principle by Martin H. Zimmermann and P. B. Tomlinson

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Lincoln Constance

Una Nueva Especie de Tauschia (Umbelliferae) del Estado de Mexico by Lincoln Constance

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Barry E. Hammel and George J. Wilder

Dianthoveus: A New Genus of Cyclanthaceae by Barry E. Hammel and George J. Wilder

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A New Genus and Three New Species in the Memecyleae (Melastomaceae) [Paperback] Thomas Morley

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Sue Keller

A revision of the genus Wislizenia (Capparidaceae) Based on Population Studies by Sue Keller

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Jacquelyn A. Kallunki

Reproductive Biology of Mixed-Species Populations of Goodyera (Orchidaceae) in Northern Michigan by Jacquelyn A. Kallunki

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Cell-Wall Structure in Apical Meristems [Paperback] Leo W. Mericle and W. Gordon Whaley

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Jacquelyn A. Kallunki

Population Studies in Goodyera (Orchidaceae) with Emphasis on the Hybrid Origin of G. Tesselata by Jacquelyn A. Kallunki

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Mauri Lounasmaa and Carl-Johan Widen and Aarre Huhtikangas

Phorolglucinol Derivatives of Hagenia Abyssinica by Mauri Lounasmaa and Carl-Johan Widen and Aarre Huhtikangas

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The Floristics of the California Islands [Paperback] Peter H. Raven

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Clapper Chestnut, A Hybrid Forest Tree [Paperback] Elbert L. Little and Jesse D. Diller

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Ann E. Rushing and Jerry A. Snider

A Natural Hybrid Between Bruchia Microspora Nog. and Tematodon Longicollis Michx. by Ann E. Rushing and Jerry A. Snider

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Distribution of Tetraploid and Diploid Tradescantia ohiensis in Michigan and Adjoining Areas [Paperback] Donald S. Dean

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Chromatographic Comparison of Tragopogon Species and Hybrids [Paperback] Norbert F. Belzer and Marion Ownbey

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Dianne Fahselt and Marion Ownbey

Chromatographic Comparison of Dicentra Species and Hybrids by Dianne Fahselt and Marion Ownbey

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The artificial intersectional hybrid of the tropical species Ruellia brittoniana X R. occidentalis and its taxonomic significance [Paperback] Robert W. Long

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Genotypic Cariation in the Phacelia Strictiflora Complex [Paperback] George W. Gillett

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Hybrid of Kalanchoe Daigremontiana and K. Verticillata [Pamphlet] JT Baldwin

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Notes on Varieties of Bidens Connata and a Hybrid with B. Ceruna [Pamphlet] Earl Edward Sherff

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Mark Reinking

Juncus x Stuckeyi (Juncaceae), A Natural Hyrid from Northern Ohio by Mark Reinking

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Local Introgression Between Viola Cucullata Ait. and V. Septentrionalis Greene [Paperback] Norman H. Russell

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Hybrid of Kalanchoe Daigremotiana and K. Verticillata [Paperback] J. T. Baldwin

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Crossability and Relationships of the Closed-Cone Pines [Pamphlet] William B Critchfield

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Genotypic Variation in the Phacelia Strictiflora Complex [Paperback] George W. Gillet

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Delphinium Gysophilum, A Diploid Species of Hybrid Origin [Pamphlet] Harlan Lewis & Carl Epling

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