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FOREST SERVICE TREE AND RANGE PLANT NAME COMMITTEE

(1978)

Elbert L. Little, Jr., chairman, chief dendrologist (retired), Timber Management Research

Gerald W. Anderson, Forest Insect and Disease Research

Robert L. Ethington, director, Forest Products and Engineering Research

Charles Feddema, curator, Forest Service Herbarium, Rocky Mountain Forest and Range Experiment Station, Fort Collins, Colo.

Thomas E. Greathouse, Timber Management

William A. Hamilton, Office of Information

Pieter E. Hoekstra, Cooperative Forestry

Stanley L. Krugman, Timber Management Research

Grenville B. Lloyd, Recreation Management

Jack E. Schmautz, Range Management

Dwane D. Van Hooser, Forest Resources Economics Research

Library of Congress Catalog Card Number: 78-600079

For sale by the Superintendent of Documents, U.S. Government Printing Office

Washington, D.C. 20402

Stock Number 001-000-03846-0

Little, Elbert L., Jr.

Abstract

1979. Checklist of United States trees (native and naturalized). U.S.
Dep. Agric., Agric. Handb. 541, 375 p.

INTRODUCTION

This revised Checklist compiles the accepted scientific names and

current synonyms, approved common names and others in use, and the

geographic ranges of the native and naturalized trees of the United States

of America (continental, including Alaska but not Hawaii). It is primarily

a reference for foresters, botanists, students, and others interested in

trees. One of its important objects is to encourage uniform usage of tree

names. The fourth in a series, this Checklist is the official standard for

tree names in the Forest Service. It supersedes the 1953 checklist (55)1.
Much additional information about the taxonomy or dendrology of

United States trees including names and ranges has become available

through numerous researches by botanists and foresters during this 25-

year interval. Examples are taxonomic monographs, regional and State

floras, and guides for trees. Another compilation is needed to evaluate

and make accessible the new material which is scattered in technical

publications.

The Forest Service Tree and Range Plant Name Committee has spon-

sored this revision, as authorized by the Forest Service Manual (4083.4),

and has approved the common names. Membership (1978), from staffs

particularly interested in plant names, is listed on the back of title page.

The International Code of Botanical Nomenclature (115) has been

amended slightly at International Botanical Congresses (Nomenclature

Section) held at 5-year intervals. Additions to the list of conserved generic

names (nomina conservanda) have been proposed.

Botanical exploration of the country has continued at a rapid rate, even

into the most remote regions. Additional range extensions have been

recorded. Many States now have published or unpublished maps of their

tree species (or seed plants) showing occurrence by counties or localities.

Several new species of local range and additional varieties have been

proposed among the native trees. Likewise, many minor varieties and a

few species have been reduced to synonymy. Several species of large

shrubs rarely reaching tree dimensions have been added, while a few

doubtfully attaining tree size have been noted or omitted. With the

passing of time, more introduced trees have escaped from cultivation and

have become naturalized. Also a few species formerly listed as

naturalized have been dropped (mentioned in notes) as not widely estab-

lished though wild.

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