Acknowledgments:

Lily Family Yucca or Spanish Bayonet , Yucca glauca , NUTT.

FOREWORD

LIFE ZONES

PLAINS

FOOTHILLS

MONTANE

SUB-ALPINE

ALPINE

Lily Family Sand Lily, Leucocrinum montanum , NUTT.

Lily Family Wood Lily, Lilium umbellatum , PURSH

Lily Family Mariposa, Calochortus gunnisonii , WATS.

Lily Family Glacier Lily, Erythronium grandiflorum , PURSH

Orchid Family Yellow Lady's Slipper, Cypripedium calceolus , L.

Four o'Clock Family Prairie Snowball , Abronia fragrans , NUTT.

Buckwheat Family Sulphur Flower, Eriogonum umbellatum , TORR.

Buckwheat Family Sand Begonia, Rumex venosus , PURSH

Purslane Family Spring Beauty, Claytonia lanceolata , PURSH

Pink Family Moss Campion, Silene acaulis , L.

Buttercup Family Pasque Flower, Pulsatilla ludoviciana , HELLER

Buttercup Family Globe Anemone, Anemone globosa , NUTT.

Buttercup Family Nelson's Larkspur, Delphinium nelsonii , GREENE

Buttercup Family Snow Buttercup, Ranunculus adoneus , GRAY

Buttercup Family Globeflower, Trollius laxus , SALISB.

Buttercup Family Columbine, Aquilegia coerulea , JAMES

Poppy Family Prickly Poppy, Argemone intermedia , SWEET

Mustard Family Wallflower, Erysimum asperum , DC.

Saxifrage Family Snowball Saxifrage, Saxifraga rhomboidea , GREENE

Orpine Family Queen's Crown, Sedum rhodanthum , GRAY

Rose Family Bush Cinquefoil, Potentilla fruticosa , L.

Pea Family Prairie Pea, Lathyrus stipulaceus , B. AND ST. J.

Pea Family Deer Clover, Trifolium nanum , TORR.

Pea Family Lambert's Loco, Oxytropis lambertii , PURSH

Pea Family Golden Banner, Thermopsis divaricarpa , A. NELS.

Loasa Family Stickweed, Mentzelia nuda , T. AND G.

Cactus Family Strawberry Cactus, Echinocereus triglochidiatus , ENGELM.

Cactus Family Grizzly Bear Cactus, Opuntia trichophora , BRITTON AND ROSE

Evening Primrose Family Yellow Evening Primrose, Oenothera brachycarpa , GRAY

Evening Primrose Family Fireweed, Epilobium angustifolium , L.

Heath Family Pipsissewa, Chimaphila umbellata , NUTT.

Primrose Family Brook Primrose , Primula parryi , GRAY

Primrose Family Shooting Star, Dodecatheon radicatum , GREENE

Gentian Family Fringed Gentian, Gentiana elegans , A. NELS.

Milkweed Family Milkweed, Asclepias speciosa , TORR.

Morning-glory Family Bush Morning-glory, Ipomoea leptophylla , TORR.

Waterleaf Family Purple Fringe, Phacelia sericea , GRAY

Borage Family Alpine Forget-me-not, Eritrichium elongatum , JOHNSTON

Phlox Family Sky Pilot, Polemonium viscosum , NUTT.

Phlox Family Scarlet Gilia, Gilia aggregata , SPRENG.

Figwort Family Indian Paintbrush, Castilleja integra , GRAY

Figwort Family Penstemon, Penstemon unilateralis , RYDB.

Composite Family Gaillardia, Gaillardia aristata , PURSH

Composite Family Rabbit Brush, Chrysothamnus nauseosus , H. AND C.

Composite Family Easter Daisy, Townsendia sericea , HOOK.

Composite Family Showy Fleabane, Erigeron speciosus , C. FONG

Composite Family Alpine Sunflower, Hymenoxys grandiflora , PARKER

Composite Family Thistle, Circium undulatum , SPRENG.

CLASSIFICATION OF PLANTS

HOW PLANT POPULATIONS MAINTAIN THEMSELVES AND SPREAD

FLOWER FORMS

PLANT PARTS

LEAF FORMS

BOOKS DEALING WITH COLORADO WILDFLOWERS

OTHER MUSEUM PICTORIALS

INDEX

Cattail Family Cattail, Typha latifolia , L.

Transcriber's Notes

MUSEUM PICTORIAL

ROBERTS

Copyright 1953,
by Denver Museum of Natural History, Denver, Colorado

Lithographed in the United States of America
by Bradford-Robinson Printing Company,
Denver, Colorado