Botany Commons^™

Acer Negundo L., Wayne Longbottom

Specimens by Name

No abstract provided.

High School Horticulture Curriculum, Margaret Maratsos

Horticulture and Crop Science

Horticulture is just one of the many topics covered in a high school agriculture curriculum, and yet, there are very few lesson plans or resources available to teachers for these classes specifically. The objectives of this project were to compile a set of lesson plans, lab plans, and tests that would emphasize interactive and investigative learning. The lesson plans were written in such a way that they reflected a certain set of standards, set down by the state of California, and were meant to serve as a bare outline of topics that would be discussed within a week’s worth of …

B.R. Wells Rice Research Studies 2011, R. J. Norman, K.A. K. Moldenhauer

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

Geographical Distribution And Survival Of Iris Yellow Spot Virus In Spiny Sowthistle, Sonchus Asper, In Georgia, Claudia Nischwitz

All Current Publications

No abstract provided.

Tcp Transcription Factor, Branch Angle Defective 1 (Bad1), Is Required For Normal Tassel Branch Angle Formation In Maize, Fang Bai, Renata Reinheimer, Diego Durantini, Elizabeth Kellogg, Robert Schmidt

Biology Department Faculty Works

In grass inflorescences, a structure called the “pulvinus” is found between the inflorescence main stem and lateral branches. The size of the pulvinus affects the angle of the lateral branches that emerge from the main axis and therefore has a large impact on inflorescence architecture. Through EMS mutagenesis we have identified three complementation groups of recessive mutants in maize having defects in pulvinus formation. All mutants showed extremely acute tassel branch angles accompanied by a significant reduction in the size of the pulvinus compared with normal plants. Two of the complementation groups correspond to mutations in the previously identified genes, …

Sfa Gardens Newsletter, Summer 2012, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

Closely Paired Flowers Produce Single Fruit, W. John Hayden

Biology Faculty Publications

Perhaps one of the most striking features of partridge berry (Mitchella repens), the 2012 VNPS Wildflower of the Year, is its closely paired flowers that yield a single berry fruit (figure 1). That these fruits are double structures, formed by pairs of flowers, is revealed in the presence of two discrete rings of five sepals each on the fruit apex, or in some cases, by a single ring of 10 sepals. Viewed in isolation, without context, the nature of these double fruits may seem perplexing, but as in so many things, a comparative perspective helps to make sense …

Samolus Parviflorus Raf., Loy R. Phillippe

Specimens by Name

No abstract provided.

Five Nuclear Loci Resolve The Polyploid History Of Switchgrass (Panicum Virgatum L.) And Relatives, Jimmy Triplett, Yunjing Wang, Jinshun Zhong, Elizabeth Kellogg

Biology Department Faculty Works

Polyploidy poses challenges for phylogenetic reconstruction because of the need to identify and distinguish between homoeologous loci. This can be addressed by use of low copy nuclear markers. Panicum s.s. is a genus of about 100 species in the grass tribe Paniceae, subfamily Panicoideae, and is divided into five sections. Many of the species are known to be polyploids. The most well-known of the Panicum polyploids are switchgrass (Panicum virgatum) and common or Proso millet (P. miliaceum). Switchgrass is in section Virgata, along with P. tricholaenoides, P. amarum, and P. amarulum, whereas P. miliaceum is in sect. Panicum. We have …

Traversing Swanton Road, 9th Ed., James A. West

Academic, Government & Associated Organizational Research Resources

Situated at the northwest end of Santa Cruz County and occupying circa 30 square miles of sharply contrasted terrain, the Scott Creek Watershed concentrates within its geomorphological boundaries, at least 10-12% of California's flora, both native and introduced. Paradoxically, the use/abuse that the watershed has sustained over the past 140+ years, has not necessarily diminished the biodiversity and perhaps parallels the naturally disruptive but biologically energizing processes (fire, flooding, landslides and erosion), which have also been historically documented for the area for +60 years. This is an early edition of an extensive document by James A. West. Please visit the …

Herbaceous 2012 (June 3), Amy L. Myers, Julia I. Chapman, Ryan W. Mcewan

Data Files: Drew Woods Permanent Plots

Herbaceous vegetation data collected in 2012 at Drew Woods State Nature Preserve in Darke County, OH. Data key is provided in a supplemental file.

Morus Rubra L., Loy R. Phillippe, Connie Carroll-Cunningham, Richard L. Larimore, Danielle Ruffatto

Specimens by Name

No abstract provided.

Monitoring Standing Herbage Of Mid-Grass Prairie On The Fort Pierre National Grassland, South Dakota, Daniel W. Uresk

The Prairie Naturalist

Monitoring vegetation with a modified Robel pole on the Fort Pierre National Grassland was evaluated for combined shallow clay and loamy overflow ecological sites (dominated by warm-season grasses), and for clayey ecological sites (dominated by cool-season grasses). My objectives were to 1) develop a relationship between visual obstruction readings (VOR) and standing herbage, 2) provide guidelines for vegetation monitoring, and 3) evaluate vegetation monitoring during the growing season for clayey ecological sites. The relationship between visual obstruction readings and standing herbage was linear and regression coefficients were highly significant (P < 0.001) for both ecological types. Cluster analyses for shallow clay and loamy overflow ecological sites grouped the VOR and standing herbage (kg•ha-1) into 4 resource categories. Monitoring with 4 transects will provide adequate information to estimate standing herbage within 259 ha (1 section). Three resource categories (VOR + herbage) for clayey ecological sites were defined by cluster analyses. Monitoring with 4 transects was determined to provide reliable estimates of standing herbage. July validation of vegetation with the developed clayey ecological site model will provide reliable monitoring of standing herbage from July through November for this ecological site.

Germination Response Of Prairie Dropseed And Hairy Goldaster To Stratification And Temperature, Aurora R. Roemmich, Jack L. Bulter, Gary E. Larson, E. Brent Turnipseed

The Prairie Naturalist

The unique vegetation assemblage of the Black Hills in conjunction with the frequent occurrence of natural and anthropogenic disturbances emphasizes the need to use locally adapted native species in a wide variety of restoration efforts. However, a general lack of information regarding germination and propagation requirements for most native plant species has restricted their usage. A better understanding of dormancy and germination patterns for native species will increase their availability and affordability. We selected two common native species, hairy goldaster (Heterotheca villosa) and prairie dropseed (Sporobolus heterolepis), to determine their optimum germination conditions. We hand-harvested seeds during 2007–2009 for use …

Review: Mammals Of Colorado. Second Edition. David M. Armstrong, James P. Fitzgerald, And Carron A. Meaney., Thomas J. O'Shea

The Prairie Naturalist

In my view, the second edition of Mammals of Colorado is among the finest state-level books on mammals available. The book is a major revision of the first edition (Fitzgerald et al. 1994) and is a reference worth having, even if the first edition is already at hand. In this review, T summarize aspects of the new volume and provide comparisons to the first edition in an effort to persuade the reader that this is indeed the case.

The first four chapters of the second edition include background information and updated material about Colorado environments, mammals in general, the history …

Five New Records Of Ants (Hymenoptera: Formicidae) For Nebraska, Kristine T. Nemec, James C. Trager, Elizabeth Manley, Craig R. Allen

The Prairie Naturalist

Ants are ubiquitous and influential organisms in terrestrial ecosystems. About 1,000 ant species occur in North America, where they are found in nearly every habitat (Fisher and Cover 2007). Ants are critical to ecological processes and structure. Ants affect soils via tunneling activity (Baxter and Hole 1967), disperse plant seeds (Lengyel et al. 2009), prey upon a variety of insects and other invertebrates (Way and Khoo 1992, Folgarait 1998), are often effective primary consumers through their prodigious consumption of floral and especially extrafloral nectar, and honeydew (Tobin 1994), and serve as prey for invertebrates (Gotelli 1996, Gastreich 1999) and vertebrates …

Microhabitat Selection By Bobcats In The Badlands And Black Hills Of South Dakota, Usa: A Comparison Of Prairie And Forested Habitats, Cory E. Mosby, Troy W. Grovenburg, Robert W. Klaver, Greg M. Schroeder, Lowell E. Schmitz, Jonathan A. Jenks

The Prairie Naturalist

An understanding of habitat selection is important for management of wildlife species. Although bobcat (Lynx rufus) resource selection has been addressed in many regions of the United States, little work has been conducted in the Northern Great Plains. From 2006–2008 we captured and radiocollared 20 bobcats in the Badlands (n = 10) and Black Hills (n = 10) regions of South Dakota. During the summers of 2008 and 2009 we collected habitat measurements at 349 (176 Badlands, 176 Black Hills) bobcat locations and 321 (148 Badlands, 173 Black Hills) random sites. Microhabitat characteristics at bobcat use sites varied with region …

Distribution And Diversity Of Ant Genera From Selected Ecoregions Across Nebraska, Jessica Jurzenski, Marc Albrecht, W. Wyatt Hoback

The Prairie Naturalist

We documented distribution and diversity of ant genera in four of the six-level III ecoregions across Nebraska. We sampled ants using bait cards, pitfall traps, and by opportunistic sampling, including direct collection and in carrion-baited pitfall traps. We identified 22 genera from five subfamilies, which were further classified into six functional groups. In common with other Great Plains states, Formica Linnaeus and Lasius Fabricius occurred most frequently in our samples, and overall ant genus-level richness was comparable to surrounding states. We compared genera similarity using Jaccard’s similarity index within and between the High Plains (western-most) and Western Corn Belt Plains …

My Manuscript Needs Revision: Now What?, Christopher N. Jacques

The Prairie Naturalist

Greetings GPNSS members! Hopefully by now you have read my previous editorial notes about the transformation of The Prairie Naturalist (Journal) during the past few years and the work the Editorial Staff continues to do to provide a quality publication venue for the Journal’s membership and prospective authors. During my tenure as Editor-in-Chief (Editor), I have had the good fortune of working with many authors and a truly dedicated Editorial Staff. Most topics for editorials come to me relatively easily, though admittedly I found myself scratching my head when thinking about a topic for this editorial. After much pensive thought, …

Book Reviews: Human Dimensions Of Ecological Restoration: Integrating Science, Nature, And Culture. Edited By Dave Egan, Evan E. Hjerpe, And Jesse Abrams., Chuck Harris

The Prairie Naturalist

The practice of ecological restoration has long been a key element in the management of ecosystems, but it has only been since the 1980s that research on resource management has specifically studied this practice and its foundations in restoration ecology. One major focus of this research has been the application of the theories and methods of the social sciences to ecological restoration activities.

Fairly recently, the application of the social sciences to resource management, in general, and to ecological restoration, in particular, has been couched in the broadest of terms. Beginning in the 1990s, this application was expressed in terms …