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1. A morphometric analysis of Tobleria bicuspis, a Voltziales seed cone from the early Permian Jambi palaeoflora, Sumatra (Indonesia)

Author

Isabel M. Van Waveren

Subjects
Botany, QK1-989
Abstract

Tobleria bicuspis, a coniferophyte seed cone, is described from the Jambi Palaeoflora, Sumatra of Asselian (early Permian) age. A morphometric analysis based on cones, paired fertile units, and fertile and sterile scales, demonstrates their close relationship. Small paired fertile units occur mainly in cones. Medium-sized paired fertile units occur mainly on scales. And large paired fertile units are mainly dispersed. The cones are considered female and the paired fertile units are considered to represent the seeds. The cones are composed of helicoidal, bilaterally symmetrical and deeply incised scales with paired seeds. A comparison can be made with the Voltziales female taxon Schizolepis from the Triassic and Jurassic. Tobleria is regarded as having a voltzian Voltziales affinity and dates from approximately 16 to 26 million years before any other such cones.

Published
2019
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3. Ontogenetic variability in old and new collections of Dicranophyllum gallicum Grand’Eury from the late Palaeozoic of Europe

Author

Jorik Van der Pas, Linda Poppe, and Isabel M. Van Waveren

Subjects
Botany, QK1-989
Abstract

Dicranophyllum gallicum Grand’Eury is described by means of a morphometric analysis of eighty two samples from various old and new localities in western and central Europe. Stem, leaf cushions, leaf scars, leaves, axillary structures and potential seeds are described in detail, and discussed in comparison to earlier studies. The encountered variability in size and structure is shown to be higher than what was described earlier. The organisation of the leaf cushion and scar density vary gradually with the stem width, while stratigraphic position and ecology do not relate to it. It is concluded that the described variability represents an ontogenetic feature rather than a phylogenetic or ecologic one. The juvenile plants are characterised by small stems, a high leaf scar density and elongated leaf cushions with a dominant apical field, while mature specimens are characterized by a wide stem, a relatively low leaf scar density and relatively wide leaf cushions with a pronounced basal field. Axillary shoots and potential seeds of D. gallicum are described and illustrated in detail for the first time. A reconstruction based on the studied material is presented.

Published
2017
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6. A reappraisal of the Carboniferous macrofloras of the Zonguldak – Amasra Coal Basin, north-western Turkey

Author

Chistopher J. Cleal and Isabel M. van Waveren

Subjects
Palaebotany, Biostratigraphy, Pennsylvanian, Zonguldak-Amasra Coalfield, Geology, QE1-996.5
Abstract

The Zonguldak – Amasra Coal Basin in north-western Turkey has Carboniferous terrestrial deposits ranging in age from Arnsbergian to late Asturian or possibly early Cantabrian. They yield macrofloras that allow detailed biostratigraphical correlations with sequences in Europe. These correlations suggest there are substantial gaps in the Zonguldak – Amasra succession, with middle to upper Namurian, upper Langsettian, Duckmantian and lower Asturian strata apparently being missing. This in turn suggests the area was subjected to significant tectonic instability during Pennsylvanian (late Carboniferous) times and that this might have been instrumental in initiating the progressive change in composition and eventual collapse of the coal swamp biome across Variscan Euramerica during Westphalian times.

Published
2012
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8. Climate-driven palaeofloral fluctuations on a volcanic slope from the low latitudes of the Palaeotethys (early Permian, West Sumatra)

Author

Van Waveren, I. M., Booi, M., Van Konijnenburg-Van Cittert, J. H.A., Crow, M. J., Marine palynology and palaeoceanography, Marine Palynology, Marine palynology and palaeoceanography, and Marine Palynology

Subjects
Altitudinal migration, Permian, Evolution, Context (language use), Oceanography, Paleontology, Behavior and Systematics, Eustasy Orbital forcing, Glacial period, Ecology, Evolution, Behavior and Systematics, Earth-Surface Processes, geography, Sphenopteris, geography.geographical_feature_category, biology, Ecology, Palaeontology, Third-order, Last Glacial Maximum, biology.organism_classification, Volcano, Short-Eccentricity, Closed ecosystems, Quaternary, Geology, Tree line
Abstract

The present paper focuses on plant diversity fluctuations within three ecosystems from a volcanic slope in the sequence analytical context of three superimposed cyclicities. This analysis was possible thanks to the isotopic age evaluation of the volcanic Merangin section that bracketed the Mengkarang Formation on West Sumatra between 296.77 ± 0.04 and 296.14 ± 0.09 Ma (Asselian, Lower Permian). The Merangin section consists of a 490 m long fining and thinning tuffaceous aggregational sequence composed of eight short-eccentricity fining and thinning upwards parasequences. The palaeoflora along the sequence varies from tropical wet taxa, comprising cordaitalean and ferns, to mesic-xeric taxa, typified by seed ferns and early conifers. Herein the palaeofloral content of 14 consecutive lahars from a single volcanic accretion wedge in the seventh parasequence is described in detail. It displays a gradual increase in the ratios of (seed) ferns (Macralethopteris hallei, Sphenopteris sp. and gigantopterids) and early conifers (Dicranophyllum molle, Tobleria bicuspis), reaching a 100% in the 6th bed, and returning to 100% cordaitalean and ferns. The high ratio of seed ferns and early conifers in the 6th lahar is interpreted as reflecting a temporary lowering of the tree line caused by a glacial maximum from a high order cycle (obliquity or precession), superimposed on a short-eccentricity cycle, which in turn is superimposed on our third-order cycle palaeofloral transition described earlier for the whole sequence. Along this lower Permian section from the low latitudes from the Palaeotethys, glacial-interglacial cycles are seen to affect the fluctuations of the vegetation line in a chiefly similar way as during the Quaternary. The diversity fluctuations for three ecosystems (wetlands, lower and upper slope) are modelled for two of the three or more superimposed cycles. Emphasis is put on the appearance of a glacial palaeoflora on top of the sequence.

Published
2021

14. Burial and preservation of a fossil forest on an early Permian (Asselian) volcano (Merangin River, Sumatra, Indonesia)

Author

Michael C. Crow, Isabel M. van Waveren, Stephen K. Donovan, Petra Matysová, Fauzi Hasibuan, Andri Putri Perdono, and Menno Booi

Subjects
010506 paleontology, geography, Taphonomy, geography.geographical_feature_category, Permian, Dadoxylon, Geology, 010502 geochemistry & geophysics, 01 natural sciences, Paleontology, Volcano, Paleobotany, Paleoecology, 0105 earth and related environmental sciences
Published
2017
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17. Useful information for bulb forcers on numerous varieties of hyacinths, tulips, daffodils, lilies, valley, freesias, etc.

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Forcing (Plants), New York, New York (State), Nurseries (Horticulture), Nursery stock, Varieties
Published
1946

19. Van Waveren's flower bulbs : 1943 fall trade prices

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, New York, New York (State), Nurseries (Horticulture), Nursery stock, Varieties
Published
1943

20. Special offer, crop 1942 : imported and domestic bulbs ...

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), New York, New York (State), Nursery stock, Plants, Ornamental, Prices
Published
1942

21. Special offer, crop 1941 : imported and domestic bulbs ...

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), New York, New York (State), Nursery stock, Plants, Ornamental, Prices
Published
1941

22. Gladioli, 1936 /

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Gladiolus, New York, New York (State), Nursery stock, Varieties
Published
1936

23. Daffodils, iris and other bulbs, 1935 /

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Daffodils, New York, New York (State), Nursery stock, Varieties
Published
1935

24. Crop 1934, 20% discount /

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Narcissus (Plants), New York, New York (State), Nurseries (Horticulture), Nursery stock, Plants, Ornamental, Varieties
Published
1934

25. M. van Waveren & Sons, Inc., 1932.

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Narcissus (Plants), New York, New York (State), Nurseries (Horticulture), Nursery stock, Plants, Ornamental, Varieties
Published
1932

26. Two epoch making narcissus, Whistler, Mrs. E. H. Krelage : season 1931 /

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Catalogs, Narcissus bulbs, New York, New York (State), Nurseries (Horticulture), Nursery stock, Roots
Published
1931

27. M. van Waveren & Sons, Inc. [catalog].

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, M. van Waveren & Sons, Narcissus (Plants), New York, New York (State), Nurseries (Horticulture), Nursery stock, Plants, Ornamental, Varieties
Published
1931

28. M. van Waveren & Sons, Inc., 1930.

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Gladiolus, M. van Waveren & Sons, Narcissus (Plants), New York, New York (State), Nurseries (Horticulture), Nursery stock, Plants, Ornamental, Varieties
Published
1930

29. Distinctive gladioli and other bulbs for spring planting : 1930 [catalog] /

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Gladiolus, M. van Waveren & Sons, New York, New York (State), Nurseries (Horticulture), Nursery stock, Plants, Ornamental, Varieties
Published
1930

30. M. van Waveren & Sons, Inc., 1929.

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Gladiolus, M. van Waveren & Sons, Narcissus (Plants), New York, New York (State), Nurseries (Horticulture), Nursery stock, Plants, Ornamental, Varieties
Published
1929

31. M. van Waveren & Sons, Inc. : 1928 [catalog].

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Gladiolus, M. van Waveren & Sons, Narcissus (Plants), New York, New York (State), Nurseries (Horticulture), Nursery stock, Plants, Ornamental, Varieties
Published
1928

32. M. van Waveren & Sons, Inc. : 1927 [catalog].

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Gladiolus, M. van Waveren & Sons, New York, New York (State), Nursery stock, Perennials, Plants, Ornamental, Varieties
Published
1927

33. Wholesale catalogue : 1925-1926 /

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, Gladiolus, M. van Waveren & Sons, New York, New York (State), Nursery stock, Perennials, Varieties
Published
1925

35. Crop 1953

Author

M. van Waveren & Sons, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, M. van Waveren & Sons, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Bulbs (Plants), Catalogs, New York, New York (State), Nursery stock, Plants, Ornamental

50. Wood anatomical variability in Early Permian ‘araucarioids’

Author

Isabel M. van Waveren, Johanna H.A. van Konijnenburg-van Cittert, and Menno Booi

Subjects
Paleontology, Paleozoic, Extant taxon, Permian, Ecology, Dadoxylon, Fossil wood, Araucariaceae, Forestry, Plant Science, Multivariate statistical, Biology, biology.organism_classification
Abstract

Although araucarioid wood is poor in diagnostic characters, well in excess of 200 Late Paleozoic species have been described. This study presents a largescale anatomical analysis of this wood type based on the fossil wood collections from the Early Permian Mengkarang Formation of Sumatra, Indonesia. Principal Component Analysis visualisation, in conjunction with uni- and multivariate statistical analyses clearly show the wood from the Mengkarang Formation to be a contiguous micromorphological unit in which no individual species can be distinguished. Pycnoxylic wood species described previously from this collection or other collections from the Mengkarang Formation fall within the larger variability described here. Based on comparison with wood from modern-day Araucariaceae, the Early Permian specimens can be differentiated from extant (but unrelated) “araucarioids” by a few (continuous) characters.

Published
2014
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