American Journal of Botany

A Petrified Leptidophyte Cone from the Pennsylvanian of Michigan - 1930

A Lycopodiaceous Strobilus from the Pocono Sanstone of Pennsylvania - 1933

Structure and Relationships of Some Middle Devonian Plants from Western New York - 1940

A New Devonian Lycopod Genus from Southeastern New York - 1944

Cretaceous Plant Microfossils from Iowa - 1950

A New Root Species of Callixylon - 1953

Tetraxylopteris schmidtii Gen. et. sp. Nov., A Probable Pteridosperm Precursor from the Devonian of New York - 1957

Studies of paleozoic ferns: Tubicaulis Stewartii sp. nov. end evolutinary trends in the genus - 1959

On the Occurrence of Psilophyton princeps in the Early Upper Devonian of New York - 1961

Callixylon from the Upper Devonian of Northwestern Alberta - 1963

A Glossopteris flora from the Ohio Range, Antarctica - 1963

A Flora from the Chester Series (Upper Mississippian) of Southern Illinois - 1964

Calamophyton in the Middle Devonian of New York State - 1966

Archaeopteris macilenta, Anatomy and Morphology of its Fronds - 1966

Triloboxylon ashlandicum gen. and sp. n. from the Upper Devonian of New York - 1966

Tetraxylopteris schmidtii: Its Fertile Parts and its Relationships Within the Aneurophytales - 1967

Petrified plants from the upper mississipian of North America. The seed rhynchosperma gan. n - 1967

Rhabdoxylon Americanum Sp.N., A Structurally Simple Fern-Like Plant from the Upper Pennsylvanian of Illinois - 1968

Actinoxylon banksii gen. et sp. nov.: A Progymnosperm from the Middle Devonian of New York - 1968

Petrified plants from the Upper Mississippian of North America. II. Lepidostrobus fayattevillense sp. n. - 1968

Calamophyton primaevum: The complex morphology of its fertile appendage - 1969

Stenokoleos bifidus sp. n. in the Upper Devonian of New York State - 1969

Crenaticaulis, A New Genus of Devonian Plants Allied to Zosterophyllum, and its Bearing on the Classification of Early Land Plants - 1969

A study of leaf compressions of Knightiophyllum from Eocene deposits of southeastern North America - 1969

Studies on fossil Azolla: Primitive types of megaspores and massulae from the Cretaceous - 1969

A contribution to the Early Tertiary fossil record of the Salviniaceae - 1969

Idanothekion gen. n., a synangiate pollen organ with saccate pollen from the middle pennsylvanian of Illinois - 1970

On a New Structurally Preserved Arborescent Lycopsid Fructification from the Lower Pennsylvanian of North America - 1970

On the Anatomy and Morphology of Lateral Branch Systems of Archaeopteris - 1971

Proteokalon a New Genus of Progymnosperms from the Devonian of New York State and its Bearing on Phylogenetic Trends in the Group - 1971

Anatomy and Relationships of Some Devonian Progymnosperms from New York - 1971

Pertica, a new genus of Devonian plants from northern Maine - 1972

Fertile Coniferophyte remains from the Late Triassic Deep River Basin, North Carolina - 1973

The morphology of Stigmaria stellata - 1973

The Cairo flora (Givetian) from eastern New York. I. Reimannia, terete axes, and Cairoa lamanekii gen. et sp. nov. - 1973

Ibyka amphikoma, gen. et sp. n., A New Protoarticulate Precursor from the Late Middle Devonian of New York State - 1973

New fertile species of Psilophyton from the Devonian of Maine - 1974

Ariadnaesporites and Glomerisporites in the Late Cretaceous: ancestral Salviniaceae - 1975

A fertile axis of Triloboxylon ashlandicum, a progymnosperm from the Upper Devonian of New York - 1975

The anatomy and three-dimensional morphology of annularia hoskinsii sp. N - 1976

Leclercqia complexa (Lycopsida, Middle Devonian): Its anatomy, and the interpretations of pyrite petrifactions - 1976

Morphology of Protosalvinia from the Upper Devonian of Ohio and Kentucky - 1976

Rellimia thomsonii (Progymnospermopsida) from the Middle Devonian of New York State - 1977

Investigations of angiosperms from the Eocene of North America: a mimosoid inflorescence - 1977

Periastron reticulatum Unger and Aerocortex kentuckiensis, n. gen. et sp., from the New Albany Shale of Kentucky - 1978

Leaves of Archaeosigillaria vanuxemii, A Devonian Lycopod from New York - 1978

Bostonia perplexa gen. et. sp. nov., A Calamopityan Axis From the New Albany Shale of Kentucky - 1978

The Cuticle of Drepanophycus spinaeformis, A Long-Ranging Devonian Lycopod from New York and Eastern Canada - 1978

Stewartiotheca ge. n. and the nature and origin of complex permineralized medullsan pollen organs - 1979

Triplochitioxylon (Sterculiaceae): A new genus of wood from the Eocene of Oregon and its bearing on xylem evolution in the extant genus Triplochiton - 1979

Barinophyton citrulliforme (Barinophytales Incertae Sedis Barinophytaceae) from the Upper Devonian of Pennsylvania - 1980

Castaneoid inflorescences from the Middle Eocene of Tennessee and the diagnostic value of pollen (at the subfamily level) in the Fagaceae - 1980

Paralycopodites Morey & Morey, From The Carboniferous of EurAmerica - A Reassessment of Generic Affinities and Evolution of "Lepidodendron" Brevifolium Williamson - 1980

Mitrospermum vinculum sp. nov., A Cardiocarpalean Ovule From the Upper Pennsylvanian of Ohio - 1980

Investigations of angiosperms from the Eocene of North America: Rhamnus marginatus (Rhamnaceae) reexamined - 1980

A Fertile Species of Triphyllopteris from the Early Carboniferous (Mississippian) of Southwestern Virginia - 1980

Svalbardia banksii sp. nov. from the Upper Devonian (Frasnian) of New York State - 1981

Pseudofagus idahoensis, n. gen. et sp. (Fagaceae) from the Miocene Clarkia Flora of Idaho - 1981

Structurally preserved plants from southeastern Kentucky: Stauropteris biseriata sp. nov - 1982

Euphorbioid inflorescences from the Middle Eocene Claiborne Formation - 1982

A New Species of Zosterophyllum from the Early Devonian of New Brunswick - 1982

Pterocaryoid fruits (Juglandaceae) in the Paleogene of North America and their evolutionary and biogeographic significance - 1982

Attached leaves, inflorescences, and fruits of Fagopsis, an extinct genus of Fagaceous affinity from the Oligocene Florissant Flora of Colorado, U.S.A. - 1983

In situ Cercidiphyllum-like seedlings from the Paleocene of Alberta, Canada - 1983

Fungal remain in the Devonian trimerophyte Psilophyton dawsonii - 1983

Structure and affinities of Protostigmaria eggertiana - 1983

The Platycarya perplex and the evolution of the Juglandaceae - 1984

Stem and leaf cuticle of Karinopteris: Source of cuticles from the Indiana "Paper" Coal - 1984

A Late Jurassic flora from the Orville Coast-eastern Ellsworth Land region of the Antarctic Peninsula - 1985

Studies of Paleozoic Fungi. V. Wood-Decaying Fungi in Callixylon newberryi from the Upper Devonian - 1985

Flora of the Lower Cretaceous Cedar Mountain Formation of Utah and Colorado. Part III: Icacinoxylon pittiense n.sp - 1985

Early Angiosperm Reproduction: Caloda delevoryana gen. et sp. nov., A New Fructification from the Dakota formation (Cenomanian) of Kansas - 1986

Three New Genera of Fossil Noncalcareous Algae from Valmeyeran (Mississippian) Strata of Illinois - 1986

A Woody Lycopsid Stem from the New Albany Shale (Lower Mississippian) of Kentucky - 1987

Drewria potomacensis gen. et sp. nov., an Early Cretaceous member of Gnetales from the Potomac Group of Virginia - 1987

Miocene communities and paleoenvironments of Southern Costa Rica - 1987

Fossil floral evidence of Malpighiaceae and an early plant-pollinator relationship - 1987

First fossil evidence for the primitive angiosperm family Lactoridaceae - 1987

Reassignment of Aspidium heterophyllum to a new genus in the family Matoniaceae - 1988

Eocene floral evidence of Lauraceae: corroboration of the North American megafossil record - 1988

Liriodendron (Magnoliaceae) from the Miocene Clarkia Flora of Idaho - 1988

Permineralized fruits and seeds from the Princeton Chert (Middle Eocene) of British Columbia: Araceae - 1988

Foliar morphology and anatomy of the gigantopterid plant Delnortea abbottiae, from the Lower Permian of West Texas - 1988

Earliest megafossil evidence of Fagaceae: phylogenetic and biogeographic implications - 1989

Extinct transitional Fagaceae from the Oligocene and their phylogenetic implications - 1989

Rellimia thomsonii from the Givetian of New York: Secondary Growth in Three Orders of Branching - 1989

Lepidodendron aculeatum with attached foliage: Evidence of stem morpholgy and fossilization processes - 1989

Attached reproductive and vegetative remains of the extinct American-European genus Cedrelospermum (Ulmaceae) from the Early Tertiary of Utah and Colorado - 1989

Reproductive and vegetative structure of Nordenskioldia (Trochodendraceae), a vesselless dicotyledon from the Early Tertiary of the northern hemisphere - 1991

Angiosperm flowers and Tricolpate pollen of Buxaceous affinity from the Potomac Group (Mid-Cretaceous) of Eastern North America - 1991

Caesalpinia subgenus Mezoneuron (Leguminosae, Caesalpinioideae) from the Tertiary of North America - 1991

Flowers, fruits, and pollen of Florissantia, an extinct Malvalean genus from the Eocene and Oligocene of western North America - 1992

A new species of Marsilea from the Dakota Formation in central Kansas - 1992

Fossil bananas (Musaceae): Ensete oregonense sp. nov. from the Eocene of western North America and its phytogeographic significance - 1993

Late Cretaceous fossil flowers of Ericalean affinity - 1993

Fruits and seeds of the Tertiary Brandom Lignite. VII. Sargentodoxa (Sargentodoxaceae) - 1993

Chloranthus-like stamens from the Upper Cretaceous of New Jersey - 1993

The Role of Hydropteris pinnata gen. et. sp. nov. In Reconstructing the cladistics of Heterosporous Ferns - 1994

Javelinoxylon, an Upper Cretaceous dicotyledonous tree from Big Bend National Park, Texas, with presumed Malvalean affinities - 1994

A new species of winged fruit from the Miocene of Ecuador: Tipuana ecuatoriana (Leguminosae) - 1995

Upper Cretaceous Magnoliaceous fruit from British Columbia - 1995

Appomattoxia ancistrophora gen. et sp. nov., a new Early Cretaceous plant with similarities to Circaeaster and extant Magnoliidae - 1995

Clevelandodendron ohioensis, gen. et sp. nov., A Slender Upright Lycopsid from the Late Devonian Cleveland Shale of Ohio - 1996

Fossil flowers and fruits of the Actinidiaceae from the Campanian (Late Cretaceous) of Georgia - 1996

Fossil flowers and fruits of the Actinidiaceae from the Campanian (Late Cretaceous) of Georgia - 1996

A new microphyllous plant from the Lower Devonian of Yunnan Province, China - 1997

The fossil monocot Limnobiophyllum scutatum: resolving the phylogeny of Lemnaceae - 1997

A new fossil fern assignable to Gleicheniaceae from Late Cretaceous sediments of New Jersey - 1997

Ellesmeris sphenopteroides, gen. et sp. nov., A new zygopterid fern from the Upper Devonian (Frasnian) of Ellesmere, N.W.T., Arctic Canada - 1997

Sporophytes and gametophytes of Dicranaceae from the Santonian (Late Cretaceous) of Georgia - 1998

Two new fossil flowers of magnoliid affinity from the Late Cretaceous of New Jersey - 1998

Fossil Clusiaceae from the Late Cretaceous (Turonian) of New Jersey and implications regarding the history of bee pollination - 1998

Paleoazolla, a new heterosporous fern from the Upper Cretaceous of Argentina - 1999

Studies in neotropical paleobotany. XIV. A palynoflora from the Middle Eocene Saramaguacan Formation of Cuba - 2000

Fossil Legumes from the Middle Eocene (46.0 Ma) Mahenge Flora of Singida, Tanzania - 2000

The development of Archaeopteris: New evolutionary characters from the structural analysis of an Early Famennian trunk form southeast Morocco - 2000

Leaf dimorphism in Archaeopteris roemeriana (Progymnosperm): Further early fossil evidence of shoot dorsiventrality - 2001

Studies in neotropical paleobotany. XV. A Mio-Pliocene palynoflora from the eastern cordillera, Bolivia: Implications for the uplift history of the Central Andes. - 2001

A Dendroctonus bark engraving (Coleoptera: Scolytidae) from a middle Eocene Larix (Coniferales: Pinaceae): early or delayed colonization? - 2001

The earliest fossil evidence of the Hamamelidaceae: Late Cretaceous (Turonian) inflorescences and fruits of Altingioideae - 2001

The earliest fossil evidence of the Hamamelidaceae: Late Cretaceous (Turonian) inflorescences and fruits of Altingioideae - 2001

A diverse assemblage of Anacardiaceae from Oligocene sediments, Tepexi de Rodriguez, Puebla, Mexico - 2002

An extinct genus of Salicaceae based on twigs with attached flowers, fruits, and foliage from the Eocene Green River Formation of Utah and Colorado, USA - 2003

A Middle-Late Eocene inflorescence of Caryophyllaceae from Tasmania, Australia - 2003

Cyathea cranhamii sp. nov. (Cyatheaceae), anatomically preserved tree fern sori from the Lower Cretaceous of Vancouver Island, British Columbia - 2003

Miocene winged fruits of Loxopterygium (Anacardiaceae) from the Ecuadorian Andes - 2004

Fossils and plant phylogeny - 2004

Cobbania corrugata gen. et comb. nov. (Araceae): a floating aquatic monocot from the Upper Cretaceous of western North America - 2007

Potomacanthus Lobatus Gen. Et Sp. Nov, A New Flower of Probable Lauraceae from the Early Cretaeous (Early To Middle Albian) of Eastern North America - 2007

Phytolaccaceae infructescence from Cerro del Pueblo Formation, Upper Cretaceous (late Campanian), Coahuila, Mexico - 2008

Menispermaceae from the Cerrejón Formation, middle to late Paleocene, Colombia - 2008

Fossil Araceae from a Paleocene neotropical rainforest in Colombia - 2008

Todea from the Lower Cretaceous of Western North America: implications for the phylogeny, systematics, and evolution of modern Osmundaceae - 2008

Seed ferns survived the end-Cretaceous mass extinction in Tasmania - 2008

Scutifolium jordanicum gen. et sp. nov. (Cabombaceae), an aquatic fossil plant from the Lower Cretaceous of Jordan, and the relationships of related leaf fossils to living genera - 2008

Earliest orchid macrofossils: early Miocene Dendrobium and Earina (Orchidaceae: Epidendroideae) from New Zealand - 2009

An Early Cretaceous fruit with affinities to Ceratophyllaceae - 2009

Upper Cretaceous aquatic plants from Northern Mexico - 2009

Phylogenetic diversification of Equisetum (Equisetales) as inferred from Lower Cretaceous species of British Columbia, Canada - 2009

Distinguishing angiophytes from the earliest angiosperms: A Lower Cretaceous (Valanginian-Hauterivian) fruit-like reproductive structure - 2009

Papuacedrus (Cupressaceae) in Eocene Patagonia, a new fossil link to Australasian rainforests - 2009

Upper Cretaceous woods from the Olmos Formation (late Campanian–early Maastrichtian), Coahuila, Mexico - 2010

Fossil Ericaceae from New Zealand: Deconstructing the Use of Fossil Evidence in Historical Biogeography - 2010

Leaf Fossils of Banksia (Proteaceae) from New Zealand: an Australian Abroad - 2010

Phytogeographic implications of fossil endocarps of Menispermaceae from the Paleocene of Colombia - 2011

Leaf Fossils of the Ancient Tasmanian Relict Microcachrys (Podocarpaceae) from New Zealand - 2011

Paleocene Malvaceae from northern South America and their biogeographical implications - 2011

The fossil record of Eucalyptus in Patagonia - 2012

Palynological composition of a Lower Cretaceous South American tropical sequence: Climatic implications and diversity comparisons with other latitudes - 2012

Rainforest conifers of Eocene Patagonia: attached cones and foliage of the extant southeast-Asian and Australasian genus Dacrycarpus (Podocarpaceae) - 2012

First record of Todea (Osmundaceae) in South America, from the early Eocene paleorainforests of Laguna del Hunco (Patagonia, Argentina) - 2013

Leaf fossils of Luzuriaga and a monocot flower with in situ pollen of Liliacidites contortus Mildenh. & Bannister sp. nov. (Alstroemeriaceae) from the early Miocene - 2014

First South American Agathis (Araucariaceae), Eocene of Patagonia - 2014