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Full-Text Articles in Life Sciences

A Description Of Vascular Plant Species From An Area In The Central Sierra Nevada Foothills Of California, Thomas Carter Hensel Jan 1971

A Description Of Vascular Plant Species From An Area In The Central Sierra Nevada Foothills Of California, Thomas Carter Hensel

University of the Pacific Theses and Dissertations

Much work has been done on the remarkably diverse flora of California but few specific studies of the foothills of the Central Sierra Nevada Range have been undertaken. One such area is Calaveras County, a region rich in the early history of California.

The site chosen for this study ranges from approximately 2350 to 2700 feet in elevation. It is well defined by survey and accessible at all times of the year. The primary objective of the study was to determine what vascular plant species occur naturally in the area. This was accomplished by extensive collections made from April 1970 …


Drug Plants Of California, Frederick Louis Beauchamp Jan 1949

Drug Plants Of California, Frederick Louis Beauchamp

University of the Pacific Theses and Dissertations

Many books and articles have been written covering the flora of California. Few, however, have dealt specifically with those plants yielding drug principles used in the materia medica of the medical and pharmacy professions. Over one thousand different species of native and introduced drug plants are growing in the state. Many of these, it is true, have fallen into disuse, either because of lack of medicinal value, or substitutes have been found in the laboratories of the chemist.

The development of the drug farming industry will not only give employment to the state’s increasing population, but will enable our nation …


A Study Of The Native Trees Of Amador County, Guy V. Towsley Jan 1937

A Study Of The Native Trees Of Amador County, Guy V. Towsley

University of the Pacific Theses and Dissertations

The region covered by this study reaches from the valley floor of the San Joaquin-Sacramento Valley, with an altitude of about 150 feet, to the top of the Sierra Nevada Mountains, whose peaks, in Amador County, reach to more than 9000 feet. Mokelumne Peak has an altitude of 9371 feet. The north and south distance, across the county at Ione, is 22 miles, while at Cook's Station, it is barely 5 miles. Amador County has an area of about 600 square miles.

Thus, a study of trees in this county, gives a fairly representative cross-section picture of the Sierras at …


Weeds In Sacramento County Of California, Ross Clover Jan 1937

Weeds In Sacramento County Of California, Ross Clover

University of the Pacific Theses and Dissertations

Sacramento County has many types of Agriculture and many weed pests which compete with the crops. Stock may be poisoned by certain weeds and weeds may also act as hosts for fungus diseases, virus diseases and insect pests of cultivated crops. Many plants may be weeds in one locality and harmless or beneficial in other parts. The author has made a thorough study of the country's agriculture and its weeds. Latest control practices were also studied.


A Microscopic Study Of Cross-Sections Of Woody Dicotyledonous Stems With Reference To Their Use In Courses In Elementary Botany, Nancy Jane Toms Jan 1936

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.