Sensitive plant surveys in the Big Belt and Elkhorn Mountains, U.S.D.A. Forest Service, Region 1, Helena National Forest, Montana

464 Pages·1993·10.7 MB·English

by  Poole, Jackie M

MONTANA
STATE
This"cover" pageaddedbytheInternetArchiveforformatting purposes

ST,'.TEDeCUMENTS COILECTICM
MONTANASTATE LIBRARY
HELEN1A5,15MEO.N6TtAhNAAVE5.9S20
SENSITIVE PLJ^NT SURVEYS IN THE
BIG BELT AND ELKHORN MOUNTAINS
U.S.D.A. FOREST SERVICE - REGION 1
HELENA NATIONAL FOREST
MONTANA
Prepared by:
Jackie M. Poole and Bonnie L. Heidel
Montana Natural Heritage Program
State Library Building
1515 E. 6th Avenue
Helena, Montana 59620
Prepared for:
Helena National Forest
2880 Skyway Drive
Helena, MT 59601
Order No. 43-03H6-2-0125
January 1993
m
© 1993 Montana Natural Heritage Program
This doc\iment should be cited as follows: Poole, Jackie M. and
Bonnie L. Heidel. 1993. Sensitive Plant Surveys in the Big Belts
and Elkhorn Mountains, Helena National Forest. Montana Natural
Heritage Program. Helena, MT. 129 pp. plus printouts, maps

^
TABLE OF CONTENTS
Page
EXECUTIVE SUMMARY V
ACKNOWLEDGEMENTS vii
INTRODUCTION 1
STUDY AREA 2
METHODS ^
RESULTS
A. OVERVIEW OF PLANTS OF SPECIAL CONCERN WITHIN THE
BIG BELT AND ELKHORN MOUNTAINS STUDY AREA 7
B. VERIFIED PLANTS OF SPECIAL CONCERN INCLUDING
HABITAT PROFILES AND SPECIES STATUS
1. Astragalus convallarius var. convallarius. . .12
2. Cirsium longistylum 22
3. Delphinium andersonii 36
4. Juncus hallii 43
5. Lesquerella klausii 51
6. Polygonum douglasii ssp. austinae 63
DISCUSSION • "^^
LITERATURE CITED "^
ii

APPENDIX
APPENDIX 1 - Areas surveyed 81
APPENDIX 2 - Preliminary list of special plants potentially
occurring in the Elkhorn and Big Belt Mountains 91
APPENDIX 3 - Species deleted from Appendix 2 93
APPENDIX 4 - Revised list of special plants potentially
occurring in the Elkhorn and Big Belt Mountains 96
APPENDIX 5 - Element occurrence records and maps of species
of concern occurring in the Elkhorn and Big Belt
Mountains on the Helena National Forest
unnumbered inserts
APPENDIX 6 - Preliminary plant list of the Big Belt
Mountains 103
APPENDIX 7 - Preliminary plant list of the Elkhorn
Mountains 120
iii