Rolf Nussbaumer / Texas Bluebonnet {Lupinus texensis} in field of wildflowers, Gonzales County, Texas, USA, March

Rolf Nussbaumer / Texas Bluebonnet (Lupinus texensis) and Drummond's Phlox (Phlox drummondii) flowering in meadow, Gonzales County, Texas, USA, March 2007

Rolf Nussbaumer / Texas Bluebonnet (Lupinus texensis) and Drummond's Phlox (Phlox drummondii) flowering in meadow, Gonzales County, Texas, USA, March 2007

Rolf Nussbaumer / Wildflower field with Texas Bluebonnet (Lupinus texensis), Comal County, Hill Country, Texas, USA, March 2007

Rolf Nussbaumer / Wildflower field with Texas Prickly Pear Cactus (Opuntia lindheimeri) Squaw Weed (Senecio ampullaceus) Texas Bluebonnet (Lupinus texensis), Three Rivers, Live Oak County, Texas, USA, March 2007

Rolf Nussbaumer / Wildflower field with Texas Prickly Pear Cactus (Opuntia lindheimeri) Huisache tree (Acacia farnesiana) Squaw Weed (Senecio ampullaceus)Texas Bluebonnet (Lupinus texensis),Three Rivers, Live Oak Count...

Ingo Arndt / Water drop in leaf of lupine, Germany

Shattil & Rozinski / Bluebonnet / Lupin flowers {Lupin sp} and Paintbrush flowers {Castilleja sp} in wildflower meadow, Texas, USA, 1997

Shattil & Rozinski / Bluebonnet / Lupin flower {Lupin sp} amongst Paintbrush flowers {Castilleja sp}, Texas, USA

Jack Dykinga / Lupin (Lupinus sp) flowering amongst Ponderosa pine (Pinus ponderosa) cones, near Tiyo Point, Grand Canyon NP, Arizona, USA

Rob Tilley / Lupin (Lupinus) with dewdrops, Olympic NP, Washington, USA. June

Rolf Nussbaumer / Mourning Dove {Zenaida macroura} at water next to Texas Bluebonnet flowers (Lupinus texensis) Hill Country, Texas, USA

David Welling / Arctic lupine flower (Lupinus arcticus) Hatcher Bay, Alaska

Niall Benvie / Wild Lupin {Lupinus nootkatensis} Lauvas, Latvia, Europe

Tom Vezo / Nootka lupin leaf with dew {Lupinus nootkatensis} St Paul Is, Alaska

David Welling / Lupin flowers {Lupinus sp} California, USA

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus), Drummond's Phlox (Phlox drummondii ) and Tickseed, Fort Parker State Park, Texas

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Pointed Phlox (Phlox cuspidata)

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus), Pointed Phlox (Phlox cuspidata), Prickly Poppy (Argemone albiflora), and Squaw-weed (Senecio aureus) flowers, Hill Country, Texas

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus), Drummond's Phlox (Phlox drummondii ) and Tickseed, Fort Parker State Park, Texas

Tim Fitzharris / Annual Coreopsis (Coreopsis tinctoria) Texas Bluebonnet (Lupinus subcarnosus) and Drummond's Phlox (Phlox drummondii), Fort Parker State Park, Texas

Jack Dykinga / A large group of Broad-leaf Lupines (Lupinus latifolious) on a foggy hillside with Oregon White Oaks (Quercus garryana) in distance, Bald Hills, Redwood National Park, California

Jack Dykinga / A large group of Broad-leaf Lupines (Lupinus latifolious) on a foggy hillside with Oregon White Oaks (Quercus garryana) in distance, Bald Hills, Redwood National Park, California

Jack Dykinga / A large group of Broad-leaf Lupines (Lupinus latifolious) on a foggy hillside with Oregon White Oaks (Quercus garryana) in the distance, Bald Hills, Redwood National Park, California

Jack Dykinga / Tree Lupines (Lupinus arboreus) lining the shoreline of Lake Wakatipu, South Island, New Zealand

Jack Dykinga / Large group of flowering Lupines (Lupinus latifolious) on hillside with Oregon White Oaks (Quercus garryana) in background, Redwood National Park, Bald Hills, California.

Jack Dykinga / Large group of flowering Lupines (Lupinus latifolious) on hillside with Oregon White Oaks (Quercus garryana) in background, Redwood National Park, Bald Hills, California.

Jack Dykinga / Teddy Bear cholla cactus {Opuntia bigelovii}, Lupins {Lupinus sparsiflorus}, Californian poppies {Eschscholtzia californica} and Bottlebush {Encelia farinosa} flowering, Superstition Mountains, Arizon...

Jack Dykinga / Cane cholla cactus {Opuntia versicolor}, Lupins {Lupinus sparsiflorus} and Californian poppies {Exchscholtzia californica} flowering on Quinlan mountains, Tohono O'oodham Reserve, Arizona, USA

Jack Dykinga / Teddy Bear cholla cactus {Opuntia bigelovii}and Lupins {Lupinus sparsiflorus}, Tonto National Forest, Superstition Mountains, Arizona, USA

Jack Dykinga / Teddy Bear cholla cactus {Opuntia bigelovii}, Lupins {Lupinus sparsiflorus}, Californian poppies {Eschscholtzia californica} and Bottlebush {Encelia farinosa} flowering, Superstition Mountains, Arizon...

Jack Dykinga / Fields of Lupins {Lupinus sparsiflorus} and Teddy Bear cactus {Opuntia bigelovii} Superstition mountains, Tonto National Forest, Arizona, USA

Jack Dykinga / Fields of Lupins {Lupinus sparsiflorus}, Mexican poppies {Eschscholtzia californica} and Teddy Bear cactus {Opuntia bigelovii} Superstition mountains, Tonto National Forest, Arizona, USA

Rob Tilley / Mountain Wildflowers including blue Lupins (Lupinus) Mt. Rainier NP, Washington, USA

Jack Dykinga / Sonoran desert plain with yellow Poppies (Eschscholtzia californica), Lupins (Lupinus sparsiflorus), and Red Owl's clover (Orthocarpus purpurascens), Quinlan Mountains, Arizona, USA

Yva Momatiuk & John Eastcott / Domestic Cattle (Bos taurus), young steer in meadow of Texas Bluebonnets (Lupinus texensis), North America

Tim Fitzharris / Large-leaved Lupine (Lupinus polyphyllus) in bloom overlooking grassland, Carrizo Plain National Monument, California

Tim Fitzharris / Saguaro (Carnegiea gigantea) amid flowering Lupine, California Brittlebush (Encelia californica) and Desert Golden Poppies (Eschscholtzia glyptosperma), Organ Pipe Cactus National Monument, Arizona

Tim Fitzharris / Saguaro (Carnegiea gigantea) amid flowering Lupine, California Brittlebush (Encelia californica) and Desert Golden Poppies (Eschscholtzia glyptosperma), Organ Pipe Cactus National Monument, Arizona

Tim Fitzharris / Saguaro (Carnegiea gigantea) and Teddybear Cholla (Cylindropuntia bigelovii) amid flowering Lupine and California Brittlebush (Encelia californica), Arizona

Tim Fitzharris / Saguaro (Carnegiea gigantea) and Teddybear Cholla (Cylindropuntia bigelovii) amid flowering Lupine and California Brittlebush (Encelia californica), Arizona

Shattil & Rozinski / Lupin {Lupinus sp} Texas, USA

Shattil & Rozinski / Lupin {Lupinus sp} Texas, USA

LYNN M. STONE / Wildflower meadow with Mules-ears {Wyethia amplexicaulis} and Lupins {Lupinus sp} Montana, USA

Pete Oxford / Andean lupin {Lupinus sp} growing on hillside above Quito, Andes, Ecuador

Philippe Clement / Lupins in flower {Lupinus sp} Grand Tetons NP, Wyoming, USA

Pete Oxford / Andean lupin {Lupinus sp} Andes, Ecuador

Michael Durham / Tallcup Lupine (Lupinus caudatus) with spring blooms on the Zumwalt Prairie, owned by The Nature Conservancy, Oregon

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Indian Paintbrush (Castilleja miniata) flowers in bloom, Hill Country, Texas

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Indian Paintbrush (Castilleja miniata) flowers in bloom, Hill Country, Texas

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Prickly Pear cactus (Opuntia sp), Hill Country, Texas

Yva Momatiuk & John Eastcott / Portrait of calf in meadow of Texas Bluebonnets (Lupinus texensis), North America

Yva Momatiuk & John Eastcott / Sand Bluebonnet (Lupinus subcarnosus) and Paintbrush (Castilleja sp) flowers in spring meadow, Hill Country, Texas

Yva Momatiuk & John Eastcott / Sand Bluebonnet (Lupinus subcarnosus) and Paintbrush (Castilleja sp) flowers in spring meadow, Hill Country, Texas

Yva Momatiuk & John Eastcott / Texas Bluebonnet (Lupinus texensis) flowers and Desert Sunflowers (Geraea canescens), Hill Country, Texas

Yva Momatiuk & John Eastcott / Texas Bluebonnet (Lupinus texensis) flowers and Desert Sunflowers (Geraea canescens), Hill Country, Texas

Yva Momatiuk & John Eastcott / Indian Paintbrush (Castilleja attenuata) and Texas Bluebonnet (Lupinus texensis) field, Hill Country, Texas

Yva Momatiuk & John Eastcott / Indian Paintbrush (Castilleja attenuata) and Texas Bluebonnets (Lupinus texensis) next to dirt road, Hill Country, Texas

Tim Fitzharris / Lupine (Lupinus sp) in meadow near crescent beach, British Columbia, Canada

Yva Momatiuk & John Eastcott / Common Sunflower (Helianthus annuus) flowers and Large-leaved Lupine (Lupinus polyphyllus) in summer, Pryor Mountain, Montana

Tim Fitzharris / Lupine (Lupinus sp) in meadow at West Beach, Indiana Dunes National Lakeshore, Indiana

Tim Fitzharris / Lupine (Lupinus sp) in meadow at West Beach, Indiana Dunes National Lakeshore, Indiana

Tim Fitzharris / California Poppy (Eschscholzia californica), Dwarf Lupines (Lupinus caespitosus) and Eriophyllum (Eriophyllum sp) flowers, Antelope Valley, California

Tim Fitzharris / California Poppy (Eschscholzia californica) flowers and Dwarf Lupines (Lupinus caespitosus), Portal Ridge, California

Tim Fitzharris / Indian Blanket (Gaillardia pulchella), Bluebonnet (Lupinus subcarnosus), Tickseed and Prickly Poppy (Argemone polyanthemos) flowers blowing in the wind, Hill Country, Texas

Tim Fitzharris / California Poppy (Eschscholzia californica) and Lupine (Lupinus sp) flowers in bloom, Tehachapi Mountains, California

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Paintbrush (Castilleja sp) flowers, Hill Country, Texas

Tim Fitzharris / California Poppy (Eschscholzia californica) and Lupine (Lupinus sp) flowers covering hills, Tehachapi Mountains, California

Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) and Lupine (Lupinus sp) meadow, Organ Pipe Cactus National Monument, Arizona

Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Paintbrush (Castilleja sp) flowers, Hill Country, Texas

Tom Vezo / Nootka lupin (Lupinus nootkatensis) with frost. St Paul Island, Alaska, USA

Brian Lightfoot / Garden Lupins {Lupinus polyphyllus} naturalised beside River Spey, Grantown-on-Spey, Scotland

Duncan Mcewan / Nootka lupin (Lupinus nootkatensis). Scotland, UK, Europe

Albert Aanensen / Wild Lupins and other flowers {Lupinus sp} Hood river, Oregon, USA

Albert Aanensen / Wild Lupins and other flowers {Lupinus sp} Hood river, Oregon, USA

Tom Vezo / Nootka lupins in (Lupinus nootkatensis). St Paul Island, Alaska, USA

Tom Vezo / Nootka lupin bud (Lupinus nootkatensis) with frost. St Paul Island, Alaska, USA

Tom Vezo / Nootka lupin (Lupinus nootkatensis). St Paul Island, Alaska, USA

Niall Benvie / Frost melting on lupin leaves Aviemore Inverness-shire Scotland UK

Colin Monteath / Lupine (Lupinus sp) flowering near Cave Stream, Castle Hill, Canterbury, New Zealand

Colin Monteath / Lupine (Lupinus sp) flowering near Cave Stream, Castle Hill, Canterbury, New Zealand

Tim Fitzharris / Lupine (Lupinus sp) flowering in meadow, Grand Teton National Park, Wyoming

Ingo Arndt / Nootka Lupine (Lupinus nootkatensis) at sunset, Chugach National Forest, Kenai Peninsula, Alaska

Ingo Arndt / Nootka Lupine (Lupinus nootkatensis) at sunset, Chugach National Forest, Kenai Peninsula, Alaska

Ingo Arndt / Nootka Lupine (Lupinus nootkatensis) field in meadow, Chugach National Forest, Kenai Peninsula, Alaska

Ingo Arndt / Nootka Lupine (Lupinus nootkatensis) field and photographer Ingo Arndt, Alaska

Tim Fitzharris / Paintbrush (Castilleja sp), Phlox (Phlox sp), Lupines (Lupinus sp), and poppies, Texas

Michael Quinton / Northern Hawk Owl (Surnia ulula) fledgling amid lupine, Alaska

Patricio Robles Gil / Wildflower field including Lupine, Coahuila state, Mexico

Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) and Lupine (Lupinus sp) meadow, Organ Pipe Cactus National Monument, Arizona