Botany Commons^™

Verbena Canescens Var. Roemeriana L.M.Perry, F. Lyle Wynd, H. C. Mueller

Specimens by Name

No abstract provided.

Viola Sagittata Ait., H. K. Svenson

Specimens by Name

No abstract provided.

The Abortion Of Essential Organs In The Imperfect Flowers Of Benzoin Aestivale, Norris M. Paulson

Electronic Theses and Dissertations

There have been a number of investigations dealing with the abortion of essential organs in the imperfect flowers. Ulvin submitted a paper on Abortive Stamens and Carpels in Lychnis alba, Simon described stamen and carpel abortion in Cucumis stativus, Schaffner was able to control sex expression in Arisamea triphyllum and secure sex reversal in Cannabis stiva, Bessey determined the relationship of sex to the age of pollen in Cannabis sativa.

A Microscopic Study Of Cross-Sections Of Woody Dicotyledonous Stems With Reference To Their Use In Courses In Elementary Botany, Nancy Jane Toms

University of the Pacific Theses and Dissertations

The problem of this study was to discover a woody dicotyledonous stem which could be used as the principal example of stem structure in a course in elementary botany.

The Phaenogams Of Western Kentucky University State Teachers College, Gertrude Raymond

Masters Theses & Specialist Projects

The campus of Western Kentucky State Teachers College was laid out in 1910 by Mr. Henry Wright, landscape architect, with the view of planting ornamental shrubs and woody and herbaceous plants indigenous to Kentucky. In more recent years the gardens on the grounds of the Kentucky Building have been planted with many species of Kentucky plants.

This study was undertaken for the purpose of making a scientific classification of the flowering plants on the campus of Western Kentucky State Teachers College.

A Survey Of The Woody Plants Of A Selected Area In Osage Township Allen County Kansas, French Booher

Electronic Theses & Dissertations

This paper contains the results of studies of the woody plants of a selected area in Osage township, Allen county, Kansas, during the spring, summer, and fall of 1934 and spring of 1935. The area is two miles long and approximately three hundred yards wide, located in the northeastern part of Allen county about three miles east of Mildred, Kansas. In making this survey the writer has attempted to identify and classify the woody plants, namely the trees, shrubs, and vines.

Bulletin No. 2: The Connecticut Arboretum At Connecticut College, New London, George S. Avery Jr., Katharine Matthies, Katharine Blunt, C B. Graves, Katherine Floyd

Bulletins

No abstract provided.

Color Reactions As An Aid To Seed Indentification, Carlton Leo Schmit

Bachelors’ Theses

Plants have long been classified according to their physical likenesses and structures. To sort plants according to such a basis, a botanist uses a key. In most cases, these keys are based on the flower or fruit of the plant. Sometimes there are disadvantages in using these structures, because usually they are only present for a short portion of the year. In a few cases, the seeds or fruits of plants have been used as a basis of classification as, for instance, in the Umbelliferae, Alismaceae, and Bidens.

Manual Of The Grasses Of The United States, A. S. Hitchcock

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Introduction 1

Uses of grasses 1

Distribution of grasses 5

Morphology of grasses 6

Classification of grasses 10

Nomenclature 12

Common names 14

Scope of the manual 14

Gramineae (Poaceae), the grass family 15

Descriptions of the subfamilies and keys to the tribes 16

Subfamily 1. Festucoideae 16

Subfamily 2. Panicoideae 17

Descriptions of the tribes and keys to the genera 17

Tribe 1. Bambuseae 17

Tribe 2. Festuceae 17

Tribe 3. Hordeae 20

Tribe 4. Aveneae 21

Tribe 5. Agrostideae 22

Tribe 6. Zovsieae 24

Tribe 7. Chlorideae 24

Tribe 8. Phalarideae. 25

Tribe 9. Oryzeae 25

Tribe 10. …

The Effect Of A Controlled Nitrogen Supply With Different Temperatures And Photoperiods Upon The Development Of The Potato Plant, H. O. Werner

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The potato (Solanum tuberosum Linn.) is grown under a great variety of conditions with regard to temperature, length of day, intensity and character of light, texture, fertility, and moisture of soil, and atmospheric humidity. There is need for a better understanding concerning the internal response of the potato plant to these external conditions when they are applied, either singly or in combination with each other, and the resulting morphological response, especially with regard to the tuberization process. It has been the object of this investigation to determine the relation of the nitrogen supply to the processes of stolon and …

Bulletin No. 1: The Connecticut Arboretum At Connecticut College, New London, Katharine Matthies

Bulletins

No abstract provided.

A Comparison Of Certain Methods Of Assay Oil Of Chenopodium, Orville Peterson

Electronic Theses and Dissertations

As defined in the United States Pharmacoposis, tenth revision, oil of Chenopodiumis the volatile oil distilled with steam from the fresh, over-ground parts of the flowering and fruiting plant of Chenopodium embrosiesdes war antheimintieum. (Family Chenopodiasene) oil of chenopodium yields not less than 65 per cent of accaridel.

Relation Of The Differential Fertilization Genes, Ga Ga, To Certain Other Genes Of The Su-Tu Linkage Group Of Maize, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

The Ga, or “gamete” gene of maize can be studied only or principally by its disturbance of normal Mendelian ratios of contrasted characters differentiated by genes linked with it. The amount of this disturbance can be used as a measure of the intensity of linkage between Ga and other genes of the su-Tu group.

Disturbance of the 3:1 ratio of starchy, Su, to sugary, su, endosperm has been most studied. In one of the early papers on Mendelian inheritance, Correns (1902) reported that, although crosses between most starchy and sugary varieties gave an F₂ ratio of …

The Relation Of The Native Forest Cover To The Physical And Chemical Nature Of The Soils Of The Mammoth Cave National Park Area, Sheppard Walker

Masters Theses & Specialist Projects

This study was undertaken for the purpose of determining the relation existing between the native forest cover and the chemical and physical properties of the soils of the Mammoth Cave National Park area. The study was suggested by certain references in the literature to a correlation existing between forest cover and the geological, chemical and physical nature of soils of this area. The recent attempt at reforestation in the Mammoth Cave National Park area renders such a study timely, and it is believed that the results reported in this paper will materially aid the Mammoth Cave National Park Commission and …

Taxonomix Study Of The Betulaceae And The Fagaceae Of Milwaukee County And Vincinity, Chalres A. Guenther

Bachelors’ Theses

The study of the Betulaceae and the Fagaceae in Milwaukee County and the immediate vicinity, taxonomically and from the standpoint of distribution presents an interesting problem. The family Betulaceae (Birch Family) comprises 11 species and 3 varieties, 8 species of which are arborescent. One genera is sometimes referred to as being arborescent in this vicinity, but since the author does not consider a lower growing shrub arborescent, he has excluded it from the classification of trees but has in the following discussion treated it as a shrub. The family Fagaceae (Beech Family) which comprises 8 species of which one is …

Study Of The Tissues And Tissue Development In The Leaf And Stem Of Lycium Halifmifolium, L., Charles A. Troxel

Bachelors’ Theses

The Matrimony-vines are shrubs with usually spiny branches, rigid in some species, slender and arching or procumbent in others, with small and rather narrow, usually grayish green leaves, and dull-colored whitish, purplish, or violet flowers and scarlet, rarely yellow or black, berries. Most of the species are tender but Lycium halimlfollum, L. chinense, and also Lycium turcomanicum and L. ruthenlcum are hardy and thrive in the north temperate regions.

The Latex System In The Root Of Taraxacum Officinale, Eleanor Kelton Evenson

Electronic Theses and Dissertations

In 1930 Mr. Emil Madsen of this laboratory began some experimental work upon the roots of dandelions, for the purpose of determining the means by which a dandelion root, which has been cut off below the surface of the ground, regenerates new shoots. He found that such roots form adventitious buds in exposed pericycle and secondary phloem. Several such buds may be formed in a single root. They grow and appear above the ground as leafy shoot.

The Factors Affecting The Method Of Branching In Ailanthus Glandulosa., Emory W. Theiss

Electronic Theses and Dissertations

No abstract provided.

The Identification Of The More Important Prairie Hay Grasses Of Nebraska By Their Vegetative Characters, F. D. Keim, G. W. Beadle, A. L. Frolik

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is convenient and sometimes necessary to identify the grasses in their vegetative stage of growth. This is especially desirable in a study of the vegetation of native hay meadows and permanent pastures. This key is prepared as a guide in the identification of the more important prairie hay grasses of Nebraska. The meadows are often harvested before the floral parts of many of the grasses appear. If it is desired, therefore, to study the botanical composition of the native meadows, it becomes necessary to rely on identification of many of the grasses by means of vegetative characters.

The Ethnobotany Of The Acoma And Laguna Indians, George R. Swank

Biology ETDs

The Indian lives close to nature and utilizes the plants which grow about him, and these uses differ among various tribes. In order therefore to understand the ethnobotany of any group of Indians it is necessary to know something of their history, customs, mythology, religion and medicine. Hence in treating the ethnobotany of the Acoma and Laguna Indians the above phases of their culture will be discussed as they relate to these two pueblos.

The A Series Of Allelomorphs In Relation To Pigmentation In Maize, R. A. Emerson, E. G. Anderson

Department of Agronomy and Horticulture: Faculty Publications

Introduction ... 503

The allelomorph A^b ... 504

The allelomorph a^p ... 505

Dominance ... 508

Summary ... 508

Literature Cited ... 509

Viola Odorata L., Edwin Hubert Eames

Specimens by Name

No abstract provided.

Viola Odorata L., Edwin Hubert Eames

Specimens by Name

No abstract provided.

The Ethnobotany Of The Isleta Indians, Volney H. Jones

Anthropology ETDs

This study is an outgrowth of the increasing interest in the history, ethnology, and archaeology of the Pueblo Indians of the Southwest. Although much research has been done in this very fertile field, new and fascinating problems are constantly pre­senting themselves.

When one states that the environment greatly influences a people he speaks truisms and common knowledge. The arid South­west with its distinctive flora offers an unusual environment to which the Indian had adapted himself remarkably well. The object in general of this problem has been to study the reciprocal re­lation between the Isleta Indian and his plant environment; speci­fically, …

Viola Odorata L., Edwin Hubert Eames

Specimens by Name

No abstract provided.

Certain Cultural Characteristics Of Digitalis Pupurea, (Linne) With A Proposed Chemical Assay, Clark W, Eidsmoe

Electronic Theses and Dissertations

Since its introduction into modern medicine digitalis has occupied a very important position in our material medica. Its widespread use as a remedy in conditions of failing heart, and its effectiveness as a diuretic in certain dropsical conditions have gained for it a reputation which is equaled by few other drugs. The opinion of pharmacologiate and physicians as to its mode of action and its field of clinical usefulness has been revised a number of times, and there is much diversity of teaching as to its use in special ailments. Among some workers there is a tendency to restrict its …

The Anatomy Of The Germinating Bulbil Of Lilium Tigrinum, Katherine Harris Tripp

Electronic Theses and Dissertations

Apparently very little, if any, anatomical investigation has been made of the bulbil of Lilium tigrinum, though it has often been used as a propagating organ and consequently, the problem suggested attractive possibilities in an almost virgin field of investigation. Collections were made from five different plants beginning Sept. 27, 1928 until July 22, 1929. The older bulbils were removed from the axils of the foliage leaves and fixed in formalin acetic alcohol. They were gradually dehydrated by treatment with alcohol increasing the percentage 10% from 50 up to 100%. Xylol treatment in increasing percentages was then resorted to, until …

The Structure Of The Seed And The Development Of The Seedling Of Symplocarpus Foetidus (L.) Nutt,, John P. Ranzau

Bachelors’ Theses

The first mention of Symplocarpus foetidus (L.) Nutt. is made by John Josselyn in his ''New England rarities discovered in birds, beasts. fishes, serpents and plants of that country" published in 1872, where it is listed with plants such as are "proper to the country and have no name." The subject of his description can readily be discovered from a crudely engraved illustration. "The whole plant scents as strong as a fox" certainly leaves no doubt as to the identity of the plant. The plant has for a long time been of unusual interest to both layman and botanist because …

The Effect Of Treatment With Ethylene Chlorhydrin Upon The Respiration Of Sweet Potatoes (Ipomea Batatas), Leon J. Tyler

Electronic Theses and Dissertations

1. Treatment with ethylene chlorhydrin produced marked results in the respiration of four of five varieties of sweet potatoes tried.
2. Not all varieties of sweet potatoes respond alike to the same treatment. Porto Rico variety of sweet potatoes did not respond to the treatment.
3. There was a considerable difference in the amount of CO₂ respired by different varieties.
4. The need for further research here with respect to the specific effect of chemicals upon the cell system becomes apparent and again emphasizes the importance of Biochemistry.
5. There was possibly an accelerative effect on sprouting due to increased respiratory processes brought about …

The Frequency Of Somatic Mutation In Variegated Pericarp Of Maize, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

Some years ago (Emerson 1922) the writer announced that in F₂ of

certain crosses of variegated with colorless pericarp in maize the heterozygous

individuals changed to self color more frequently than did the homozygous

individuals of the same cultures. No “explanation” of this phenomenon

was then apparent, but later results, though still far from affording

an adequate solution of the problem, have furnished at least a working

hypothesis. The original unpublished paper, with minor modifications,

is given below, under the heading. “Somatic mutations in heterozygous

and in homozygous variegated pericarp.”