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Articles 61 - 90 of 3481
Full-Text Articles in Botany
Cyperus Sanguinolentus Vahl, Gordon C. Tucker, Vicky M. Tucker
Cyperus Sanguinolentus Vahl, Gordon C. Tucker, Vicky M. Tucker
Specimens by Name
No abstract provided.
The Functional Role Of Leaf Nutrients In An Old-Field Successional Community, Kirstin I. Duffin
The Functional Role Of Leaf Nutrients In An Old-Field Successional Community, Kirstin I. Duffin
Masters Theses
In functional ecology, traits that capture aspects of plant performance are used to understand how organisms interact with their environment. Leaf nutrients are an example of a functional trait that directly links to plant metabolic processes and therefore may describe plant assemblage dynamics. Multivariate leaf nutrient analyses may be used with other functional traits to understand ecological strategies because they are a direct measure of leaf metabolic processes and can describe nuances in plant allocation patterns. In this thesis, I explored (1) whether a suite of leaf nutrients (carbon, nitrogen, phosphorus, potassium, calcium, and magnesium) was related to plant growth …
Spiranthes Lacera (Raf.) Raf., W. Mcclain
Natural History Collections: Connecting With Faculty And Content, Stacey Knight-Davis, Todd A. Bruns
Natural History Collections: Connecting With Faculty And Content, Stacey Knight-Davis, Todd A. Bruns
Faculty & Staff Research & Creative Activity
For well over a century, American biologists have built collection of plants, animals, fungi, insects, and other natural materials. Often, these collections serve as a record of the unique biodiversity of the local area and provide a record of change over time. Many taxonomic, genetic, and environmental discoveries lay waiting in the drawers and cupboards in which these specimens are stored. / / Uploading images of natural history specimens to Digital Commons allows them to be easily discovered in with a web search, leading the user back to the home collection. As an example, a search for 'big leaf magnolia …
Comparison Of Oak And Sugar Maple Distribution And Regeneration In Central Illinois Upland Oak Forests, Peter J. Frey
Comparison Of Oak And Sugar Maple Distribution And Regeneration In Central Illinois Upland Oak Forests, Peter J. Frey
Masters Theses
Although white oak (Quercus alba) dominated much of the mid-west and eastern US hardwood forests prior to European settlement, changes in disturbance frequencies and habitat fragmentation, coupled with other biotic pressures, are allowing sugar maple (Acer saccharum Marshall) to displace oak in the upland forest understory. Since our understanding of how disturbance mechanisms influence oak regeneration is not fully clear, there is lack of consensus on how to employ management practices. We collected seedling microhabitat data from 5 upland oak forest sites in central Illinois, each differing in age class and/or silvicultural treatment to determine: 1) Whether …
Morphological And Ecological Investigations Of Species Of Bulrush (Scirpus) In Illinois, Julian G. Moore
Morphological And Ecological Investigations Of Species Of Bulrush (Scirpus) In Illinois, Julian G. Moore
Masters Theses
Two closely related species of bulrush, Scirpus atrovirens (Green bulrush) and Scirpus georgianus (Georgia bulrush), are widely distributed in Illinois. They are difficult to separate in the field, but readily distinguishable under magnification in the lab. These two species have been found in moist meadows, shallow marshes, edges of wet forests, and ditches. The objective of this study was to evaluate the morphological and ecological distinctness of the species with the aim toward discovering and describing other features to distinguish them reliably. Eighty plants of Scirpus atrovirens and 80 of Scirpus georgianus were examined. Fifty S. atrovirens and 50 S. …
Leaf Anatomy And Systematics Of Polygaleae (Polygalaceae), Heather Wilber
Leaf Anatomy And Systematics Of Polygaleae (Polygalaceae), Heather Wilber
Undergraduate Honors Theses
Polygalaceae are comprised of approximately 1000 species found worldwide in a variety of habitats. Over half of the species in the family were traditionally grouped into the polyphyletic genus Polygala and need resolution. Leaves from 21 species in 13 genera within tribe Polygaleae were field collected or taken from specimens at the Missouri Botanical Garden Herbarium (MO) to find phylogenetically useful characteristics of the foliar anatomy. The leaves were rehydrated using concentrated ammonium hydroxide, embedded in paraffin, and sectioned at 10 μm thickness using a rotary microtome. To observe epidermal features, rehydrated leaves were also cleared using 3% potassium hydroxide. …
Spiranthes Cernua (L.) Rich., Gordon C. Tucker
Spiranthes Cernua (L.) Rich., Gordon C. Tucker
Specimens by Name
No abstract provided.
Morus Rubra L., Gordon C. Tucker
Acer Ginnala Maxim., Gordon C. Tucker
Acer Pseudoplatanus L., Gordon C. Tucker
Morus Rubra L., Gordon C. Tucker
Vitis Riparia Michx., Gordon C. Tucker, Vicky M. Tucker
Vitis Riparia Michx., Gordon C. Tucker, Vicky M. Tucker
Specimens by Name
No abstract provided.
Vitis Riparia Michx., Gordon C. Tucker, Vicky M. Tucker
Vitis Riparia Michx., Gordon C. Tucker, Vicky M. Tucker
Specimens by Name
No abstract provided.
Morphometric Study Of Variation In The Genus Galeopsis (Lamiaceae), Michael T. Hughes
Morphometric Study Of Variation In The Genus Galeopsis (Lamiaceae), Michael T. Hughes
Masters Theses
The genus Galeopsis L. of the family Lamiaceae, also known as hemp-nettle, grows naturally in Europe and Asia, with four species naturalized in North America. The number of real species is in doubt, because of conflict over whether certain taxa are species, subspecies, or synonyms. The genus consists of five to eight taxa. I studied flower and leaf size ratios to clarify the distinctions of taxa in Galeopsis. These data were analyzed statistically, using cluster analysis, Principal Components Analysis (PCA), and Analysis of Variance (ANOVA). The results indicated that although some measurements, such as leaf width in G. angustifolia, …
Survey Of Medicinal Herbs Of Central Illinois Prairie And Woodlands, Debra Ann Welch
Survey Of Medicinal Herbs Of Central Illinois Prairie And Woodlands, Debra Ann Welch
Masters Theses
Illinois has been named the "Prairie State" for good reason. When the pioneers discovered a vast sea of grasses and forbs, they thought the prairie infertile. However, they soon found out that the blacksoil prairie was composed of a rich diversity of plant species that could provide much of the medical and nutritional needs of everyday life. The medicinal uses of many prairie species have not only been tested throughout history, but today modern science has also discovered their therapeutic importance.
The purpose of this study was to survey prairie species growing in the central Illinois counties of Coles and …
Verbena Urticifolia L., Gordon C. Tucker
Verbena Urticifolia L., Gordon C. Tucker
Acer Negundo L., Wayne Longbottom
Samolus Parviflorus Raf., Loy R. Phillippe
Morus Rubra L., Loy R. Phillippe, Connie Carroll-Cunningham, Richard L. Larimore, Danielle Ruffatto
Morus Rubra L., Loy R. Phillippe, Connie Carroll-Cunningham, Richard L. Larimore, Danielle Ruffatto
Specimens by Name
No abstract provided.
Vitis Riparia Michx., Gordon C. Tucker
Fraxinus Pennsylvanica Marsh., Loy R. Phillippe
Fraxinus Pennsylvanica Marsh., Loy R. Phillippe
Specimens by Name
No abstract provided.
Viola Striata Aiton, Loy R. Phillippe
Naias Marina All., Gordon C. Tucker
Acer Negundo L., Loy R. Phillippe
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Specimens by Name
No abstract provided.
Vitis Vulpina L., John E. Ebinger
Vitis Riparia Michx., Gordon C. Tucker
Cypripedium Calceolus Var. Pubescens (Willd.) Correll, John E. Ebinger
Cypripedium Calceolus Var. Pubescens (Willd.) Correll, John E. Ebinger
Specimens by Name
No abstract provided.