Castilleja 1c Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 1d Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2c E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2f E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2g E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2h E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja affinis 4 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf exserta 3 Wind Wolves Preserve, CA 130412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf exserta 4 Wind Wolves Preserve, CA 130412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 10 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 3 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 4 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 5 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 6 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 7 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 8 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 9 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja talamancensis 2 Cerro de la Muerte, Costa Rica 231211 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja talamancensis 3 Cerro de la Muerte, Costa Rica 231211 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja talamancensis 5 Cerro de la Muerte, Costa Rica 231211 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja talamancensis 6 Cerro de la Muerte, Costa Rica 231211 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja talamancensis 7 Cerro de la Muerte, Costa Rica 231211 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 1a Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 1b Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2a E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2b E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2d E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja 2e E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja affinis 1 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja affinis 2 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja affinis 3 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf exserta 1 Wind Wolves Preserve, CA 130412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf exserta 2 Wind Wolves Preserve, CA 130412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf exserta 5 Wind Wolves Preserve, CA 130412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf exserta 6 Wind Wolves Preserve, CA 130412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 1 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja cf lineariifolia 2 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja exserta 1 Oak Park, CA 130410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja exserta 2 Oak Park, CA 130410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja exserta 3 Oak Park, CA 130410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja foliolosa 1 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja foliolosa 2 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja foliolosa 3 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja foliolosa 4 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja foliolosa 5 Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja talamancensis 1 Cerro de la Muerte, Costa Rica 231211 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Castilleja talamancensis 4 Cerro de la Muerte, Costa Rica 231211 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).