Wild Cherry Trees Research Articles

Plant models faithful to botanical structure and development

Some very impressive results have been obtained in the past few years in plants and trees image synthesis. Some algorithms are largely based on the irregularity and fuzziness of the objects, and use fractals, graftals or particle systems. Others focus on the branching pattern of the trees with emphasis on morphology. Our concern here is the faithfulness of the models to the botanical nature of trees and plants. We present a model which integrates botanical knowledge of the architecture of the trees: how they grow, how they occupy space, where and how leaves, flowers or fruits are located, etc. The very first interest of the model we propose is its great richness: the same procedural methods can produce "plants" as different as weeping willows, fir trees, cedar trees, frangipani trees, poplars, pine trees, wild cherry trees, herbs, etc. Another very important benefit one can derive from the model is the integration of time which enables viewing the aging of a tree (possibility to get different pictures of the same tree at different ages, accurate simulation of the death of leaves and branches for example). The ease to integrate physical parameters such as wind, the incidence of factors such as insects attacks, use of fertilizers, plantation density, and so on makes it a useful tool for agronomy or botany.

Wild Black Cherry, Chemical Control of Eastern Tent Caterpillar,Lafayette, Indiana, 1979

Abstract A series of 14 treatments was applied to small wild black cherry trees at the Duncan Electric Company, Lafayette, Indiana on May 21'79. The materials were applied with a one gallon B & G stainless steel sprayer operating at 30 psi. Temperature at the time of application was 69-70° F. The caterpillars were nearing maturity. The experiment was replicated three times. There was no evidence of phytotoxicity thru nine days post treatment. Immediately following treatment 10 treated larvae were col-lected in plastic bags for observation and mortality counts. Forty-eight hours after treatment the number of larvae per nest were counted.

Why Does the Wild Cherry Tree

Why Does the Wild Cherry Tree

A Pteridophyte Botanical Garden

When we purchased home we acquired also trapezoidal piece of land at the end of the backyard about 65 X 20 X 55 X 15 feet. The northeast corner of the plot was good 2 feet lower than the back yard. The southwest corner-6 inches higher. Midway across the plot was bank with 45 degree slope. The plot was surrounded by trees on four sides with dead and decaying wild cherry tree in the center. The ground was covered with vegetation: mostly Broad-leaved dock (Rumex obtusifolius) interspersed with Gill over the ground (Nep,eta hederacea) and Burdock (Arctium lappa) on the higher southern section, and an almost pure stand of Celandine poppy (Chelidonium majus) on the lower northern section. Poison ivy flourished along two sides of the property line. It seemed like a good piece of land to because it would serve as buffer between property and potential building lot. But it looked like miserable piece of land to own if you cared about yards and growing plants. Even after we cut down the old and dying wild cherry trees on property, pushed over the dead tree in the middle of the plot, pulled the hundreds of celandines, poisoned the poison ivy and dug out the dock, the area looked hopeless. The trees on neighbors' properties shaded one part or another all through the day and the terrain was neither suited to gardening nor mowing. So we dubbed it our woods and decided to specialize in ferns and fern allies. Our first ferns were common ones of the area. Sometimes they were snatched from destruction by bulldozer and backhoe. Sometimes they were carefully selected from abundant patches in woodland areas. At all times they were lifted with soil on the roots and planted in holes well supplied with leaf mold. The second spring we watched Royal fern, Osmunda regalis, Interrupted fern, Osmunda claytoniana, Cinnamon fern, Osmunda cinnamomea, Lady fern, Athyrium asplenioides, Christmas 63

Street-Name Patterns in Denver

-IN THE LATEAUTUMNOF 1858 some of the Pikes Peak gold prospectors decided to winter at the foot of the Rocky Mountains. Although they were merely squatters on Indian territory they staked out a tract of land at the junction of Cherry Creek and the South Platte River, and on November 6 proceeded to map in gridiron form, the first streets of what later became one of the central parts of Denver, Colorado. They named their creation Auraria, after the Georgia home town of one of the founders. In having the streets parallel the banks of the intersecting streams the pioneers adopted a diagonal pattern that still puzzles both natives and strangers. After the United States Congressional Grant was made and surveyed in 1864, all additions to the then legally constituted city of Denver were laid out with streets running north-south and east-west. FollO\vingthe popular street-name pattern instituted in 1682 by William Penn for his colonial capital, Philadelphia, they called one set of streets First, Second, etc., beginning at the South Platte River and extending to Twenty-third. These were intersected at right angles by named streets. Instead of using tree names as Penn had, they called theirs Front (fronting on Cherry Creek), Cherry (after the Creek, on whose banks wild Cherry trees grew), Ferry (since it extended to the ferry that operated across the South Platte), St. Louis (former center of the fur trade), Cheyenne and Arapahoe (after tribes claiming title to the town site). Then came the names of the presidents of the United States, in chronological orderperhaps the most frequently used of all street-name patterns. This series extended from Washington to Buchanan, who was then in office, but omitted for some now unknown reason both Tyler and Fillmore. Quincy was substituted for the last name of the second Adams. By inserting a Platte Street, the map-makers reached the

Nests in Wild Cherry Trees

Nests in Wild Cherry Trees