Thesis (M.S.)--University of Wisconsin--Madison, 1961. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 46-47).

Inaug.-Diss.--Göttingen.

Thesis (doctoral)--Universität Kiel, 1913. / Cover title. Bibliography: p. 52.

Inaugural dissertation (Ph. D.)--Universität Basel. / Folded page inside back cover. Includes bibliographical references (p. 77-79).

Inaugural dissertation (Ph. D.)--Universität Bern. / Includes bibliographical references.

Genus Fritillaria consists of approximately 140 species of bulbous herbaceous perennials with a bicontinental distribution (Eurasia, North America) across the temperate zone of the Northern Hemisphere. The genus includes species of horticultural commercial value and those used in Traditional Chinese Medicine (TCM) preparations. Since the mid-16th century species within genus Fritillaria have attracted much attention as ornamental plants in the Middle East and Europe. The genus has received much attention by geneticists in recent years because it includes species with an exceptionally large range of genome sizes, including a subgenus containing some of the largest diploid genome sizes so far recorded in plants. This thesis first presents the most comprehensive analysis of the phylogenetic relationships between the species to date, published in 2014 in Molecular Phylogenetics and Evolution. The work reveals two distinctive clades, one containing a small number of species from N. America and N. E. Asia and the other, with the majority of species, found in Europe, N. Africa, Middle East, China and Japan. This phylogenetic distribution of Fritillaria species indicates that two independent shifts towards giant genomes have taken place during evolution of the genus. One particularly charismatic species occurring across Eurasia is the Snake's-head Fritillary (F. meleagris) with both horticultural and conservation importance. The thesis presents new genetic markers to analyse the relationships between populations of F. meleagris across Eurasia. Three distinct populations were found, in Northern Europe/Scandinavia, Eastern Europe and the Russian Federation. All the English populations are almost certainly derived from populations originally occurring in Northern Europe and likely introduced into England through multiple introductions. However, its origin in the British Isles remains a mystery, although recent research within this project has thrown new light on the history of its first record and description in France and its early presence in Britain.

Thesis (Ph. D.)--University of Michigan, 1923. / "Papers from the Department of Botany of the University of Michigan, no. 201." "Reprinted ... from the American journal of botany, vol. xii ... [Jan.] 1925." Bibliography: p. 16-17.

Thesis (Ph. D.)--University of Chicago. / Reprinted from the Botanical gazette, v. 38, no. 3, p. 161-184, September, 1904. Also issued as Contributions from the Hull botanical laboratory. lxii. "Literature cited": p. 182-183.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1958. / Typescript. Abstracted in Dissertation abstracts, v. 19 (1959) no. 7, p. 1536-1537. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 312-315).

Tulbaghia violacea, a member of the family Alliaceae is indigenous to the Eastern Cape and is widely used as a herbal remedy for various febrile and gastro-enteric ailments, particularly in young children. Adverse effects, and even fatalities, have been reported following treatment with the plant extract. The project has involved synthesis of model compounds, chromatographic analysis of flavonoid and other constituents of the plant, and examination of the volatile components. Some fifteen flavones were synthesised as chromatographic models and in the course of this work, the development of a new method for synthesis of carboxylic anhydrides was completed. Use of the flavone standards permitted identification of the flavonols kaempferol and quercetin in hydrolysed glycosidic plant extracts. In addition, several sugars were identified, viz., D-glucose, D-fructose, L-arabinose and D-galactose as free sugars, and D-glucose, D-galactose , 1-rhamnose, D- fucose, D-xylose, 1-arabinose and D-fructose as glycosidic sugars, by g.l.c. and g. c. - m. s. analysis of derivatives of isolated sugar mixtures. The presence in the plant extracts of steroidal saponins was also demonstrated. The sulphur compounds, 2,4,5,7-tetrathiaoctane-2,2-dioxide and 2,4,5,7-tetrathiaoctane were isolated from the plant and characterised spectroscopically. This result, together with analysis of volatiles from the plant, has led to a proposal concerning the nature and origin of sulphur compounds in Tulbaghia violacea, showing close correlation with the sulphur compounds in Allium species. Investigation of the biological activity of Tulbaghia violacea extracts showed bacteriostatic activity, particularly of extracts which had not been heated, and which had been prepared from mature plants. Treatment of isolated smooth muscle preparations with Tulbaghia violacea extracts indicated the presence of a β-adrenergic agonist having an inhibitory effect on normal muscle contraction. The results of the investigations indicate that while there may be some basis for use of the plant as an antibacterial, or to treat colic, the adverse effects, caused possibly by the sulphur compounds and/or steroidal saponins present, may override the beneficial effects.