Dianella caerulea 1 Lund Bot Garden 150422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella caerulea 2 Lund Bot Garden 150422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella ensifolia 3 Lund Bot Garden 150422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella nigra 1 (cult) Wai-O-Tapu Thermal Area S of Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella nigra 2 (cult) Wai-O-Tapu Thermal Area S of Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella nigra 3 (cult) Wai-O-Tapu Thermal Area S of Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella nigra 4 (cult) Wai-O-Tapu Thermal Area S of Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella nigra 5 (cult) Wai-O-Tapu Thermal Area S of Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 5 Hyden Wave Rock, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 6 Hyden Wave Rock, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 7 Hyden Wave Rock, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 8 Hyden Wave Rock, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 10 Iliau Loop Trail, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 11 Lyon Arboretum, Honolulu, Hawaii 130708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 12 Limahuli Garden, Kauai, Hawaii 130712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 13 Limahuli Garden, Kauai, Hawaii 130712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 2 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 3 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 7 Iliau Loop Trail, Kauai, Hawaii 130714 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 9 Iliau Loop Trail, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella 1a Mt Susu, Papua New Guinea 831030 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella 1b Mt Susu, Papua New Guinea 831030 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella ensifolia 1 Lund Bot Garden 150422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella ensifolia 2 Lund Bot Garden 150422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella nigra 6 (cult) Wai-O-Tapu Thermal Area S of Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 1 W of Bremer Bay, Western Australia 111003 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 2 W of Bremer Bay, Western Australia 111003 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 3 Hyden Wave Rock, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 4 Hyden Wave Rock, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella revoluta 9 Hyden Wave Rock, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 1 Lyon Arboretum, Honolulu, Hawaii 130708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 4 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 5 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 6 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella sandwicensis 8 Iliau Loop Trail, Kauai, Hawaii 130714 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dianella tasmanica Kunming Bot Garden 110705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).