Biology News
Noninvasive Angiographic-Derived FFR: Is Wireless Physiology Coming to Your Cath Lab Soon? - Cath Lab Digest (press release)

Cath Lab Digest (press release)
An interventional colleague asked, “What is the number of diagnostic-only cath labs in the United States or North America that could benefit from fractional flow reserve (FFR), or more specifically, angio-derived FFR, and not have to send their ...

'The Food Explorer': The intrepid botanist who brought avocados and more to our shores - USA TODAY

When the realization sinks in that avocados, hummus, even Egyptian cotton exist in America because of crafty botanical espionage, one naturally questions who's responsible — and how he landed the job. The country's first and most prominent plant spy ...

Food Explorer Brought Hundreds Of Immigrant Plants To America ... - NPR

In the early 20th century, botanist David Fairchild traveled the world and brought plants back to the U.S. that we now see as thoroughly American. NPR talks with the author of a book on Fairchild.

Silvics of North America

Sterling - United States

Compendium of research papers describing the characteristics and distribution of important broadleaf and coniferous forest trees of the United States and Canada, plus many of the native and naturalized trees of Mexico, the Caribbean Islands, and Hawaii. Compiled over several decades by USDA Forest Service scientists.

  • Category:

    Botany - Dendrology

  • Description:

    Silvics Manual Volume 1-Conifers and Volume 2-Hardwoods
    Silvics of Forest Trees of the United States, Agriculture Handbook 271, was the first comprehensive document of its kind in the United States. It was an edited compendium of research papers describing silvical characteristics of 127 trees; the papers had been independently prepared by specialists at U.S. Department of Agriculture Forest Service experiment stations. The original silvics manual took 10 years to complete and was published in 1965. Our store of silvical and related knowledge has markedly increased since that silvics manual was published 25 years ago. The Woody-Plant Seed Manual of 1948 was updated in 1974 and issued as Agriculture Handbook 450, Seeds of Woody Plants in the United States. New names were added to the literature in 1979 with Agriculture Handbook 541, Checklist of United States Trees (Native and Naturalized), which superseded Agriculture Handbook 41. In 1980, the 1954 Society of American Foresters' publication, Forest Cover Types of the United States and Canada, was revised. A six-volume Atlas of United States Trees (U.S. Department of Agriculture Miscellaneous Publications 1146, 1293, 1314, 1342, 1361, and 1410) added tree range maps of most major and minor tree species to the literature. It was both appropriate and timely, therefore, to revise the information in the original silvics manual and to add other native and naturalized trees to the compendium.


    Silvics - Tree Identification - Tree Characteristics - Hardwood - Conifers - Pine Tree - Deciduous Trees - Tree Leaves - Tree Leaf Identification - Leaf Shapes - Tree Types - Tree Manual - Tree Information - Tree Growth - Tree Yield - Tree Description - Native Tree Species - Tree Habitat - Geographic Tree Distribution - Scientific Tree Names - Common Tree Names - Native Trees - Naturalize Trees - Tree Compendium - Silvics Manual

Lichens of North America
United States

Information about lichen biology, lichens and wildlife, lichens and people, and the book of the same title, which was published in 2001.

United States

Attempt at a list of valid names for the spiders (Araneae) that occur in North America north of Mexico. Compiled by the American Arachnological Society.

Metalmarks of North America
United States

Distribution maps, species accounts, and photos of metalmarks (family Riodinidae) of the United States and northern Mexico.

United States

Illustrated annotated checklist.

Odonata of North America
United States

Lists dragonflies and damselflies of North America along with the English names established by the Dragonfly Society of the Americas.

United States

Systematic checklist.

United States

Systematic checklist.

Birds of North America
United States

A reference series on North American birds, with information and sample profiles.

Snakes of North America
United States

Complete list of species, with images and family descriptions.

Salvias of North America
United States

Checklist of all native and naturalized Salvias of the United States and Canada; notes on growing Salvias in North Carolina.