This page provides you with plant checklists, plant keys,
and special plant information
about the flora in the
Four Corners states of Utah, Arizona, New Mexico, and Colorado.
Click to see photographs and descriptive material about flora in the Four Corners states.
Click for National Park, State, and Regional Plant Checklists and Keys
Plant Checklists from Field Trips in the Four Corners Region
The following table provides you with:
1)
Plant lists compiled on Native Plant Society field trips in the Four Corners area.
2) Plant lists compiled by Native Plant Society members on their own private trips.
3) Special plant lists, such as those published by natural history associations, parks, etc.
Lists are in easily printed PDF format. Click on the number in either the family or genus column to print an alphabetized list.
Please note the following about the plant lists:
1) Some plants on the lists were quite common in the area surveyed; some were uncommon or even rare. The abundance of each plant is not always indicated on the lists.
2) Lists may have errors because of mistaken identification, the use of incorrect keys, etc.
3) Scientific plant names on the field trip plant lists may vary from those names presently accepted because some plant names have changed since the lists were compiled. Many plant names on the older lists conform to various editions of Weber and Wittmann's Colorado Flora: Western Slope, but plant names on more recently dated lists agree with the more universally accepted names given by John Kartesz.
Location |
Date |
Leaders | Recorders | # of pages alphabetized by family |
# of pages alphabetized by genus |
Comments |
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Alpine Checklist for the Western San Juan Mountains of Colorado |
Bregar & San Juan Chapter NPSNM |
Bregar & San Juan Chapter NPSNM |
This is a compilation of a number of plant lists from many alpine areas in the Western San Juan Mountains. |
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American Basin, Uncompahgre Mts., W. of Lake City |
8/11/1995 |
Gay Austin | Stanley Smookler | Hike through American Basin to Sloan Lake, 11,300' to 12,000'. | ||
Andrews Lake |
2015 |
Bob Powell | Bob Powell | Plant list prepared for 2015 NPSNM Annual Conference | ||
Aztec National Monument |
2015 | Monument Staff | Monument Staff | Plant list prepared for 2015 NPSNM Annual Conference | ||
Beautiful Mt, Navajo Reservation, New Mexico | 5/29/2010 |
Arnold Clifford | Many trip participants | |||
Black Rock Canyon, Carrizo Mts., Arizona |
6/9/2001 |
Arnold Clifford, Sandy Friedley, Charlie King | Mary Kemp | Comments: Plants of special interest include Astragalus calycosus, A. coltonii, Erigeron argenteus, Heuchera rubescens, Petrophyton ceaspitosum, Phlox austromontana, P. cluteana. E = endemic to Colorado; I = introduced; G or S+# = global occurrences, 1 = < 5, 2 = 6-20, 3 = 21-100 populations, 4 or 5 = secure but rare in parts of range, esp. at periphery; LE or LT = listed as endangered or threatened |
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Bridal Veil Creek Trail, Telluride | 2010 |
Connie Colter & Al Schneider |
Betty Schneider |
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The list covers only the first 1 1/2 miles of the Trail. |
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Canyons of the Ancients National Monument, Hamilton Mesa Area | Beginning 2022 | Paul Laska & Al Schneider | Paul Laska & Al Schneider | 2 | 2 | The checklist covers Hamilton Mesa, especially the Rincon Canyon area. |
Canyons of the Ancients National Monument |
1995-2022 |
Leslie Stewart, Chief Ecologist of the Canyons of the Ancients, Sue Komarek, Marion Rohman, & Al Schneider |
Leslie Stewart, Sue Komarek, Marion Rohman, & Al Schneider |
|
This checklist was initiated in 1995 by Leslie Stewart and Sue Komarek & added to by Leslie until 2011 when it reached ~350 species. Marion Rohman added ~120 species from 2010-2022 and continues to keep the list updated. Al Schneider added some species. In 2022 Al Schneider updated family, genus, & species names based on APG IV & BONAP.org |
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Canyons of the Ancients National Monument |
2002-2011 |
Leslie Stewart, Chief Ecologist of the Canyons of the Ancients & Al Schneider |
This plant list was compiled from ~2002-2007 by staff of the BLM in Dolores, Colorado. Al Schneider updated the list and added species from ~2005-2011. |
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Canyons of the Ancients National Monument, Sand Canyon |
5/13/1995 |
Leslie Stewart, Sue Komarek | Leslie Stewart | Trip to feature plant communities. | ||
Carpenter Natural Area, Cortez | 4/2021 | Al Schneider | Al Schneider | 4page list | Placed in boxes at either end of Carpenter Trail. | |
Cedar Mesa & vicinity: SE Utah from Natural Bridges to Valley of the Gods |
5/15/1991 |
Rick Brune, Loraine Yeatts | Loraine Yeatts | Site: A = Arch Canyon, BS = blow sand site N. of Bluff, CC = Cow Can., CM = Cedar Mesa, CR = Comb Ridge at UT hwy163, CW = Comb Wash camp at mouth of Arch Can., CW163 = Comb Wash at UT Hwy. 163, MC = Mule Can., NB = Natural Bridges, SI = Sand Island, VG = Valley of the Gods. Rare or endangered plants: Asclepias cutleri, Astragalus cronquistii, Erigeron kachinesis, Eriogonum clavellatum. |
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Chuska Mts., New Mexico-Arizona Border |
8/7/2001 |
Arnold Clifford, Sandy Friedley, Charlie King | Scott Ellis, Loraine Yeatts | Comments: Tohatchi, NM, north along spine of Chuska Mts., to Red Rock, Az, to US 666 and Shiprock, NM Plants of special interest: Astragalus chuskanus, endemic to Chuska Mts., Lesquerella navajoensis, Lysimachia hybridum, Cryptantha setosissima, Mentzelia sp. nov. I = introduced; G or S+# = global occurrences, 1 = < 5, 2 = 6-20, 3 = 21-100 populations, 4 or 5 = secure but rare in parts of range, esp. at periphery; LE or LT = listed as endangered or threatened |
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CO Nat'l Mon., Ute Canyon |
5/19/2001 |
Bob Clarke | Bob Clarke | Comments: E = endemic to Colorado; I = introduced; G or S+# = global occurrences, 1 = < 5, 2 = 6-20, 3 = 21-100 populations, 4 or 5 = secure but rare in parts of range, esp. at periphery; LE or LT = listed as endangered or threatened | ||
De-Na-Zin Wilderness, New Mexico | 4/23/2007 |
Clifford & Schneider | Yeatts, Turner, Ward | |||
Delta and vicinity. (Also see "Escalante") |
5/27/1979 |
Jim Ratzloff, Scott Ellis | Jim Ratzloff | Field trip to observe Mancos shale vegetation between Paonia & Delta and visit hanging garden sites of Escalante Canyon, west of Gunnison River after a year of exceptional rain. . = plants of extremely restricted distribution or endemics limited to area visited. | ||
Dinosaur National Monument |
5/1/1993 |
Lynne Riedel | Loraine Yeatts | * = not in bud, bloom, or fruit | ||
Dinosaur National Monument |
5/11/1996 |
Tamara Naumann | Loraine Yeatts | Trip route followed road N from Monument Headquarters to Harpers Corner with stops at following overlooks & trails. P = Plug Hat Butte, E = Escalante Overlook, C = Canyon Overlook, F = Fremont rock art site, I = Island Park Overlook & trail, H = Harpers Corner Trail Plants of Special Concern: Oreocarya rollinsii, Boechera fernaldiana Peripheral: Fritillaria pudica New records for DINO: Holosteum umbellatum, Ranunculus jovis |
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Dolores River, Bradfield Bridge Area |
5/21/1994 |
Leslie Stewart | Leslie Stewart | ADV = non-native Sites visited: 1 = Dolores R.; 2 = dry west facing hillside next to Dolores R.; 3 = Pinon Juniper flat above Narraguinnep Creek |
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Escalante Canyon near Delta |
9/7/2008 |
Peggy Lyon | Theron Hunter and Loraine Yeatts |
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Eureka Gulch, Silverton | 7/18/2009 |
Bregar & San Juan Chapter NPSNM | Bregar & NPSNM | 112 species observed | ||
Farmington, NM and vicinity |
5/16/1998 |
Ken Heil, Mark Porter | Loraine Yeatts, Arnold Clifford, Bill Jennings | Comments: Ken Heil, San Juan College, Mark Porter, Santa Ana College, PLM specialist, Arnold Clifford, Ecosphere botanist, and Carolyn Crawford, ASC specialist, led premier tour of rare plant sites: 1=San Juan College & vicinity, 3=BLM Critical Habitat, 4=Hogback, 5=Bloomfield vicinity, 6=La Boca. Plant encountered at but not necessarily restricted to listed site number. Rare plants: Penstemon breviculus, Asclepias sanjuanensis, Sclerocactus mesae-verde, S. cloveriae sp. brackii, Pediocactus knowltonii, Astragalus humillimus, A. proximus, Gilia formosa. = not in bloom. | ||
Five Springs Farm, Monument Canyon |
2009-2011 |
Dana Price | Price Family & Al Schneider | |||
Four Corners, Montezuma County |
5/28/1995 |
Richard Moseley & Charlie King | Richard Moseley, Charlie King, Susan Komarek | Trip to 1 = Mesa Verde National Park; 2 = Mancos shale sites S of Pagosa; 3 = Pizza Hut site w of Pagosa; 4 = Chimney Rock site. = endemic species |
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Gateway Natural Area and Environs | 2007-2016 |
Loraine and Dick Yeatts | Loraine and Dick Yeatts | 7 | Almost all plants on the Gateway list are documented by specimens deposited at Denver Botanic Gardens. | |
Gold Knob, La Sal Mountains, Utah | 7/31/2010 |
Mindy Wheeler | Bill Gray with Al & Betty Schneider | Plant Survey for Grand Canyon Trust | ||
Grand Mesa Fen Inventory |
8/19/2000 |
Bob Clarke | Bob Clarke | Comments: Trip to Kane Creek headwaters E = endemic to Colorado; I = introduced; G or S+# = global occurrences, 1 = < 5, 2 = 6-20, 3 = 21-100 populations, 4 or 5 = secure but rare in parts of range, esp. at periphery; LE or LT = listed as endangered or threatened |
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Grand Mesa Flora | 2017-2021 |
John Andrews | John Andrews, Al Schneider, Bob Clarke, David Sussman |
7 | 7 | This plant list was prepared for and is also available at the Grand Mesa Visitor Center. |
Gunnison Basin Lichens |
5/30/1998 |
Sally White, Larry St. Clair | Sally White | Site: Dry Gulch, 6 mi. E of Gunnison, 1/4 mi E on power line road near sandstone outcrop List reviewed by Dr. Larry St. Clair |
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Hovenweep Ruins |
5/9/1998 |
Leslie Stewart | Leslie Stewart | Trip highlighting flora of Hovenweep National Monument ADV = non native |
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Ice Lakes |
2015 |
Chick Keller | Chick Keller | Plant list prepared for the 2015 NPSNM Annual Conference | ||
Kennebec Pass | 2000-2014 | Al Schneider | Al Schneider | 3 | ||
Kennebec Pass, La Plata Mountains |
7/30/1994 |
Sue Komarek | Sue Komarek, Leslie Stewart | |||
La Plata Canyon |
2015 |
Ross McCauley | Ross McCauley | Plant list prepared for the 2015 NPSNM Annual Conference | ||
Lake Hope Trail |
July 28, 2011 |
Connie Colter & Al Schneider |
Betty Schneider |
This list covers a bit less than the first two miles of the trail. |
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Lime Creek |
2015 |
Amanda Kuenzi | Amanda Kuenzi | Plant list prepared for the 2015 NPSNM Annual Conference | ||
Lizard Head Trail |
2000-2011 |
Al Schneider |
Al & Betty Schneider & Connie Colter |
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Lone Mesa State Park |
2008-2011 |
Al Schneider & Peggy Lyon |
Al Schneider & Peggy Lyon |
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Mesa Verde National Park, Prater Ridge Trail |
5/20 & 6/17, 2006 |
Al Schneider | Al Schneider, Leslie Stewart, Mary Kemp | Found Fritillaria atropurpurea and Iliamna grandiflora, rare plants for Mesa Verde | ||
Mesa Verde National Park |
6/10/1995 |
Dick Moseley, Charlie King | Marian J. Rohman, Charlie King | Rare plant tour with Marilyn Colyer | ||
Montezuma County: Haycamp Mesa and Hovenweep National Monument |
5/28/1983 |
Carol Brandt | Velma Richards, Loraine Yeatts | Haycamp Mesa, T37N R14W S10,17,18 along road, USGS map 7.5' Dolores East, CO. Hovenweep, Montezuma Co., CO & San Juan Co., UT, USGS map 15' Cajon Mesa, UT. |
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Narraguinnep Canyon RNA compilation list: 2000-2010 | 2001-2010 | Leslie Stewart and Al & Betty Schneider | Leslie Stewart and Al & Betty Schneider | This plant list is a compilation of lists made by USFS Ecologist, Leslie Stewart, and Narraguinnep Natural area Stewards, Al & Betty Schneider from 2000-2010. | ||
Narraguinnep Canyon RNA, NW of Cortez |
6/17/2001 |
Leslie Stewart | Leslie Stewart | Trip to explore Narraguinnep Canyon and contribute to plant species list for Forest Service RNA I = introduced alien species. | ||
Opal Lake, south of Pagosa Springs |
7/10/2010 |
Susan Halabrin |
Bob Powell |
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Owl Creek Pass near Ridgway |
7/14/2007 |
Peggy Lyon & Al Schneider | Peggy Lyon & Al Schneider | Plants recorded along road to Owl Creek Pass and along Courthouse Trail. | ||
Pagosa Peak, N of Pagosa Springs |
7/31/1999 |
Charley King, Richard E. Moseley, Jr. | Charley King, Richard E. Moseley, Jr. | Trip to Nichol's Draw uplands and wetlands on slopes of Pagosa Peak I = Piedra Rd. roadside near Hatcher Lake II = Perry Dr. roadside near Jack's Pasture Rd. |
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Pagosa Springs, west of |
6/11/1994 |
Dick Moseley, Charlie King | Leslie Stewart | Trip in Pagosa Springs area: 1 = Mancos Shale site ca. 2 mi S of intersection US160 & US84; 2 = Turkey Springs area on Newt Jack Rd. off Piedra road ca. 7 mi NW of US 160; 3 = Piedra R. Canyon, S of Piedra road bridge at Hinsdale Co. line; A = non-native, E = endemic | ||
Pass Creek Trail, Coal Bank Pass north of Durango |
2005-2010 |
Travis Ward, Al Schneider, Bob Powell |
Travis Ward, Al Schneider, Bob Powell |
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Placer Gulch Alpine, north of Silverton |
July, 2011-2015 |
Bregar & San Juan Chapter NPSNM |
John Bregar and group |
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Sharkstooth Trail | 2000-2015 | Al & Betty Schneider | Al & Betty Schneider | 3 | ||
Stony Pass |
7/17/2010 |
Bregar & San Juan Chapter NPSNM |
Trip Participants |
120 species observed |
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Unaweep Canyon, between Gateway and Whitewater |
8/10/1991 |
Scott Ellis | Bob Powell | WM = wet meadow, MM = Meadow margins, DG = disturbed ground, PJ = Pinyon-Juniper woodland. | ||
Uncompahgre Wilderness, West of Ridgway |
8/10/1995 |
Gay Austin | Stanley Smookler | Trip route followed trail to Uncompahgre Peak, from 11,400' to 12,600' | ||
U.S. Basin |
2015 |
Bob Powell | Bob Powell | Plant list prepared for the 2015 NPSNM Annual Conference | ||
Utah Hanging Gardens, NW of Bluff Utah |
7/29/2000 |
Arnold Clifford, Sandy Friedley, Charlie King | Loraine Yeatts | Comments: Due to dry conditions and season, most plants not blooming; no comprehensive plant list made Special plants: Primula specuicola, Epipactis gigantea, Anticlea (Zigadenus) vaginata, Erigeron kachinesis, Phacelia indecora, habenaria zoethcina Sites: b = alcove in Bluff sandstone, j = John's Canyon (limestone stream bank terraces in Lower Rico Form.), r = Road Canyon (Cedar Mesa Sandstone vertical cliff seeps) |
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Utah, Plants of Southeast National Parks |
published 2001 |
Canyonlands Natural History Association | ||||
Vallecito Creek, East of Durango |
7/15/1995 |
Sandy Friedley | Sandy Friedley, Leslie Stewart | Trip to visit plant communities of Vallecito Creek. | ||
Wolf Creek Pass |
8/5/1995 |
Dick Moseley, Sara Brinton, Charlie King | Dick Moseley, Sara Brinton, Charlie King | Trip to high subalpine and alpine plant communities near Lobo Overlook and above Wolf Creek Pass. |
National Parks, State, and Regional Plant Checklists and Keys
Also be sure to use the Taxonomic Data Center of BONAP where you can
construct plant lists for any state, county, zip code, or other large or small area of the U.S.
A) Colorado
Catalog of the Colorado Flora
Checklist of Vascular Flora, Yucca House National Monument
Checklist of Vascular Flora of Colorado National Monument
Rich Scully's Key to Potentillas of Colorado
Rich Scully's Key to Lamiaceae (Mints) of Colorado
Rich Scully's Key to Solanaceae (Nightshades) of Colorado
Craig Freeman's Key to Colorado Chenopodium and Teloxys
Bill Jennings' Key to Colorado Phlox
Don Farrar and Steve Popovich's Key to Botrychium & other Ophioglossaceae
B) New Mexico
Checklist of New Mexico Flora
Checklist of Vascular Plants in the Sandia and Manzano Mountains of Central New Mexico
NEW MEXICO THISTLE IDENTIFICATION GUIDE, by members of the Native Plant Society of New Mexico
Kelly Allred's Checklists and Keys for New Mexico Flora
Glenn Rink's Checklist of the Flora of Aztec National Monument
Glenn Rink's Checklist of the Flora of El Moro National Monument
From the "New Mexico Botanist": 1) Sivinski's Key to Mentzelia of New Mexico
2) Alexander's Key to Heuchera of New Mexico
C) Arizona
Glenn Rink's Checklist of the Flora of Canyon de Chelly National Monument
D) Regional Checklists & Keys
Southern Rocky Mountain Region, Checklist of Vascular Plants, 2009 version, by Neil Snow
Northern Colorado Plateau National Parks Checklists
Southern Colorado Plateau National Park Service Checklists
Special Plant Information
Neil Snow's Three-letter Family Acronyms for Vascular Plants
Updates to first edition of Ackerfield's "Flora of Colorado"