Botany Commons^™

Syringa Amurensis Rupr., John E. E. Ebinger

Specimens by Name

No abstract provided.

Evolution Of Floral Zygomorphy In Androecium And Corolla In Solanaceae, Jingbo Zhang, Peter Stevens, Wenheng Zhang

Biology Department Faculty Works

In Solanaceae, a group dominated by actinomorphic‐flowered species, floral zygomorphy is frequently observed among the early‐branching clades. Morphological studies indicated that a zygomorphic androecium is much more common than a zygomorphic corolla in the family. Ontogenic studies suggested the evolution of floral zygomorphy in these two whorls is independent. Here, we have examined the evolution of floral symmetry in the androecium and corolla in Solanaceae. The character states of floral symmetry were assembled for androecium and corolla separately, and ancestral state reconstructions were carried out at both the genus and species levels for Solanaceae and its outgroups. Correlation tests were …

Phospholipase Dζ Enhances Diacylglycerol Flux Into Triacylglycerol, Wenyu Yang, Geliang Wang, Jia Li, Philip Bates, Xuemin Wang, Douglas Allen

Biology Department Faculty Works

Plant seeds are the primary source of triacylglycerols (TAG) for food, feed, fuel, and industrial applications. As TAG is produced from diacylglycerol (DAG), successful engineering strategies to enhance TAG levels have focused on the conversion of DAG to TAG. However, the production of TAG can be limited by flux through the enzymatic reactions that supply DAG. In this study, two Arabidopsis phospholipase Dζ genes (AtPLDζ1 and AtPLDζ2) were coexpressed in Camelina sativa to test whether the conversion of phosphatidylcholine to DAG impacts TAG levels in seeds. The resulting transgenic plants produced 2% to 3% more TAG as a component of …

An On-Campus Botanical Tour To Promote Student Satisfaction And Learning In A University Level Biodiversity Or General Biology Course, Harish H. Ratnayaka

Faculty and Staff Publications

Outdoor, hands-on and experiential learning, as opposed to instruction-based learning in classroom, increases student satisfaction and motivation leading to a deeper understanding of the subject. However, the use of outdoor exercises in undergraduate biology courses is declining due to a variety of constraints. Thus, the goal of this paper is to describe a convenient, no-cost and flexible exercise using an on-campus botanical tour for strengthening specific knowledge areas of major plant groups. Its assessment on conduct and coverage, and student-perceived and actual knowledge gain is also described. Data presented derived from traditional biology undergraduates in sophomore year over nine fall …

A Comprehensive Image-Based Phenomic Analysis Reveals The Complex Genetic Architecture Of Shoot Growth Dynamics In Rice (Oryza Sativa), Malachy T. Campbell, Qian Du, Kan Liu, Chris J. Brien, Bettina Berger, Chi Zhang, Harkamal Walia

Agronomy & Horticulture -- Faculty Publications

Early vigor is an important trait for many rice (Oryza sativa L.)- growing environments. However, genetic characterization and improvement for early vigor is hindered by the temporal nature of the trait and strong genotype × environment effects. We explored the genetic architecture of shoot growth dynamics during the early and active tillering stages by applying a functional modeling and genomewide association (GWAS) mapping approach on a diversity panel of ~360 rice accessions. Multiple loci with small effects on shoot growth trajectory were identified, indicating a complex polygenic architecture. Natural variation for shoot growth dynamics was assessed in a subset …

Effects Of Habitat Restoration On Soil Retention On Santa Rosa Island, Michael Perez, Kathryn Mceachern, Ken Niessen

STAR Program Research Presentations

Ranching began on Santa Rosa Island in the 1840’s, consequently introducing nonnative megafauna that put novel selective grazing pressures on endemic plant species. Their movement patterns also altered substrate integrity as the land became denuded of any stabilizing vegetation. Dense groves of island oak (Q. tomentella) are known to aid in sediment deposition and retention. The groves also function to collect water during periods of intense fog common to the island. This experiment sought to determine whether sediment is being lost or deposited on a ridge in the middle of the island containing a grove of Q. tomentella …

Vascular Plants Of The Scott Mountain Campground Area Trinity And Siskiyou Counties, California, James P. Smith Jr, John O. Sawyer Jr.

Botanical Studies

No abstract provided.

California Vascular Plants: A Numerical Conspectus As Seen In Six Standard Floras, James P. Smith Jr

Botanical Studies

No abstract provided.

The Spaghetti Tree, James P. Smith Jr

Botanical Studies

No abstract provided.

Vascular Plants Of Trinidad Head, Humboldt County, California, James P. Smith Jr

Botanical Studies

No abstract provided.

A Chronicle Of Economic Botany, James P. Smith Jr

Botanical Studies

No abstract provided.

Botanist And Plant Exploration On The Pacific Coast Of North America: A Bibliography, James P. Smith Jr

Botanical Studies

No abstract provided.

Plant Domestication, James P. Smith Jr

Botanical Studies

No abstract provided.

2001 Lilley Cornett Woods Soil Data, Ryan W. Mcewan, Julia I. Chapman, Robert N. Muller

Data Files: Big Everidge Hollow Permanent Plots

Data collected in 2001 on the soil in the Big Everidge Hollow portion of the Lilley Cornett Woods Appalachian Ecological Research Station in southeastern Kentucky. Data key is provided in a supplemental file.

DOI: http://doi.org/10.26890/lcw.r9anrrko79

Dichotomous Keys - Their Structure And Use, James P. Smith Jr

Botanical Studies

No abstract provided.

Oklahoma Vascular Plants - A Numerical Conspectus, James P. Smith Jr

Botanical Studies

No abstract provided.

Publication Dates Of Selected Vascular Plant Families, James P. Smith Jr

Botanical Studies

No abstract provided.

Grasses Of The United States: Number Of Genera And Taxa By State, James P. Smith Jr

Botanical Studies

No abstract provided.

An Annotated Checklist Of The Vascular Plants Of Oklahoma, James P. Smith Jr

Botanical Studies

No abstract provided.

Vascular Plants Of The Horse Mountain Serpentines Humboldt County, California, James P. Smith Jr, John O. Sawyer Jr.

Botanical Studies

No abstract provided.

Vascular Plants Of Preston Peak, Siskiyou County, James P. Smith Jr

Botanical Studies

No abstract provided.

Checklist Of The Vascular Plants Of The Kangaroo Lake Area Siskiyou County, California, James P. Smith Jr

Botanical Studies

No abstract provided.

A New Species Of Cyperus Section Incurvi (Cyperaceae) From Venezuela, Gordon Tucker

Faculty Research & Creative Activity

Cyperus fedoniae is described as a new species. It is known from a single collection from the lowlands of southern Venezuela. It is a member of section Incurvi. It is related to C. dichromeniformis and C. inops, from which it can be distinguished by its smaller size and features of spikelets and achenes. A distinctive feature is the arching culms which take root at the base of the spikelets.Cyperus fedoniae es descrito como una nueva especie. Se conoce de una sola muestra de las tierras bajas del sur de Venezuela. Es un miembro de la secci.n Incurvi. Est. relacionada con …

Seedlings 2017, Corey M. Kuminecz, Mitchell J. Kukla, Julia I. Chapman, Ryan W. Mcewan

Data Files: Drew Woods Permanent Plots

Seedling data (woody species up to 50 centimeters in height) collected in 2017 at Drew Woods State Nature Preserve in Darke County, OH. Data key is provided in a supplemental file.

Statistical Hybrid Detection And The Inference Of Ancestral Distribution Areas In Tolpis (Asteraceae), Michael Gruenstaeudl, Bryan C. Carstens, Arnoldo Santos-Guerra, Robert K. Jansen

Biological Sciences Faculty Publications

Many historical biogeographic studies do not account for the effect of hybrid taxa on phylogenetic tree inference, despite recent advances in the statistical identification of such taxa. This investigation aims to illustrate the impact that hybrid taxa can have on ancestral area reconstructions of the plant genus Tolpis, which displays an evolutionary history possibly indicative of a back-colonization of the continental Mediterranean. We evaluate and apply two statistical hybrid detection methods, JML and STEM-hy, which assist in identifying reticulate patterns of allele coalescence. We also evaluate and apply a software tool, P2C2M, to test the fit of genetic loci to …

Vestured Pits In Echium (Boraginaceae): Island Woodiness Revisited, Sherwin Carlquist

Aliso: A Journal of Systematic and Floristic Botany

Vestured pits are present on pits of secondary xylem vessels of all studied Echium species, roots as well as stems. Variations in vesturing presence do occur in the genus (across wide circular pit cavities; along margins of elliptical pit apertures; aggregated to various degrees; variously abundant), but these are difficult to define precisely and are related primarily to organography and ecology rather than to the taxonomic system. The Macaronesian species have been reported to form a single clade. Wood anatomical features other than vesturing are also closely keyed to species ecology and, in particular subclades, growth forms. Woodiness, exemplified by …

Community Structure And Demography In A Saline Pan-Dune Mosaic In The Western Mojave Desert, M. Rasoul Sharifi, William N. Brostoff, Philip W. Rundel

Aliso: A Journal of Systematic and Floristic Botany

A unique saline ecological system formed by an extensive mosaic of small clay pans and low stable dunes exists within Edwards Air Force Base in the western Mojave Desert of California. This ecosystem lies between the large Rosamond and Rogers dry lakes on the old Pleistocene lakebed of Lake Thompson. Plant communities on the low and relatively stable dunes were broadly classed as saltbush scrub, with a total canopy cover of 30–36%. Atriplex confertifolia was the typical dominant, with Ericameria nauseosa as an important associate. Taller dunes of younger age and less saline soils had similar plant cover, but a …

Richness And Current Status Of Gymnosperm Communities In Aguascalientes, Mexico, María Elena Siqueiros-Delgado, Rebecca S. Miguel, José A. Rodríguez-Avalos, Julio Martínez-Ramírez, José C. Sierra-Muñoz

Aliso: A Journal of Systematic and Floristic Botany

The gymnosperm diversity of Aguascalientes, Mexico, is presented. Fifteen species from five genera and three families are reported, two of Coniferales (Cupressaceae and Pinaceae) and one of Gnetales (Ephedraceae). Pinus is the most diverse and abundant genus with seven species. The most abundant species is P. teocote, while P. strobiformis is the scarcest. Juniperus is the next most diverse genus, represented by four species, with J. deppeana the most abundant and J. durangensis the scarcest. Cupressus lusitanica, Taxodium mucronatum and Ephedra compacta are each the sole representatives of their genera. Most conifers occupy the mountainous part of the …

Collection And Preparation Of Vascular Plant Specimens, James P. Smith Jr

Botanical Studies

No abstract provided.

A Checklist Of The Vascular Plants Of The Deadfall Lakes Area, Trinity County, California, James P. Smith Jr

Botanical Studies

No abstract provided.