There are trees growing in Philadelphia (at Fourth and Spruce Streets) and the University of Virginia (at Morea, a guest house) today that grew from the cuttings Lewis sent.

Anyone who has ever canoed on the upper Missouri River knows what a welcome sight a grove of cottonoods can be. They provide shade, shelter, and fuel. For Indian ponies, they provide food. For the Corps of Discovery, they provided wheels, wagons, and canoes.
Pioneering Lewis and Clark scholar Paul Russell Cutright pays the cottonwoods an appropriate tribute: 'Of all the wetern trees it contributed more to the success of the Expedition than any other. Lewis and Clark were men of great talent and resourcefulness, masters of ingenuity and improvisation. Though we think it probable that they would hae successfully crossed the continent without the cottonwood, don't as us how!

In your number of March 3rd I observe a long quotation from The Times, stating that Mr. Darwin "professes to have discovered the existence and modus operandi of the natural law of selection," that is, "the power in nature which takes the place of man and performs a selection, sua sponte," in organic life. This discovery recently published as "the results of 20 years' investigation and reflection" by Mr. Darwin turns out to be what I published very fully and brought to apply practically to forestry in my work Naval Timber and Arboriculture, published as far back as January 1, 1831, by Adam & Charles Black, Edinburgh, and Longman & Co., London, and reviewed in numerous periodicals, so as to have full publicity in the "Metropolitan Magazine," the "Quarterly Review," the "Gardeners' Magazine," by Loudon... and repeatedly in the "United Service Magazine" for 1831, &c. The following is an extract from this volume, which clearly proves a prior claim. [excerpt follows]

The forests of America, however slighted by man, must have been a great delight to God; for they were the best he ever planted.

Forests may be gorgeous but there is nothing more alive than a tree that learns how to grow in a cemetery.

A brotherhood of venerable trees.

Wherever the Legionary’s hand and soul show up, a garden appears.

you get forests of almond and walnut trees, casting shade as cool as a well, thick battalions of spear-like cypress and silver-trunked fig trees with leaves as large as a salver.

To plant trees is an act of faith.

...remind you that I am one of the pioneer staff of the university. I remember how we used to navigate our way into the thick forest inhabited by reptiles and wild animals in those days. When I juxtapose the state-of-the-art buildings, the well manicured lawns, the well-trimmed trees and shrubs as well as the well macadamized road of today with those days of little beginnings, my heart oozes with immeasurable and indescribable joy

You are no ruin sir — no lighting-struck tree: you are green and vigorous. Plants will grow about your roots, whether you ask them or not, because they take delight in your bountiful shadow; and as they grow they will lean towards you, and wind round you, because your strength offers them so safe a prop.

Nature in fact the best and wisest is an architect and urban planner. (...) The history of establishing gardens and orchards throughout the centuries in Poland is worth knowing, taking into consideration changes in fashions and the foreign influences. Unfortunately, not many objects from those days manifesting the love of nature by man have remained till the present days.

Trees sprout up just about everywhere in computer science...

The forests have taught man liberty.