Jack Dykinga / Foothills of the Temblor Range, carpeted with Coreopsis (yellow) and Purple Owl's Clover (Castilleja exserta) flowers. Carrizo Plain, California, USA. 30th March 2019.

Floris van Breugel / Paintbrush (Castilleja parviflora) flowering in withered sage bush, White Mountains, California, USA, July

Phil Savoie / Indian paintbrush (Castilleja angustifolia) flower, Beaverhead National Forest, Montana, USA. July.

Heather Angel / Texas bluebonnets (Lupinus texensis) and Indian paintbrush (Castilleja coccinea) amongst wildflowers in ditch beside byway. Rains triggered germinaton of annual seeds. Cuero, Texas, USA. April.

Jouan Rius / Indian paintbrush in flower (Castilleja coccinea), Capitol Reef National Park, Utah, USA, April.

Alex Hyde / (Castilleja irasuensis) flowering next to the crater rim of Volcano Irazu, 3400m. Costa Rica

Mike Read / Alpine paintbrush (Castelleja rhexifolia) among grasses at roadside, The Grand Loop, Yellowstone National Park, Wyoming USA June

Mike Read / Sulphur paintbrush (Castilleja sulphurea) in alpine meadow near Mount Washburn, The Grand Loop Yellowstone National Park, Wyoming, USA June

Gerrit Vyn / Indian paintbrush (Castilleja) in flower in sagebrush-steppe. Sublette County, Wyoming, USA. June.

Kirkendall-Spring / Paintbrush flowers (Castilleja) in bloom, Canyon Creek Meadows below Three Finger Jack, Mount Jefferson Wilderness. Oregon.

Floris van Breugel / Mt Rainier and a lenticular cloud at sunrise with lupins (Lupinus latifolius) and pink paintbrushes (Castilleja parviflora), Grand Park, Mount Rainier National Park, Washington, USA. August 2008.

Juan Carlos Munoz / Indian paintbrush flowers (Castilleja) growing in rock face, Red Rock Canyon, Clark County, Nevada, USA, March.