Eucalyptus 11 near Hyden, Western Australia 111005 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus 12a Wellington Botanical Garden NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 12b Wellington Botanical Garden NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 12c Wellington Botanical Garden NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1d Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1e Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1g Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 3a Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 3b Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 3c Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 3d Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4d Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4e Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4f Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4g Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4h Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 5c Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 5d Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 5e Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 5f Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 6a Bergianska 070221 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 6b Bergianska 070221 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 6c Bergianska 070221 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 7 near Hyden, Western Australia 111005 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus 8a near Hyden, Western Australia 111005 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus 8b near Hyden, Western Australia 111005 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus 9a near Hyden, Western Australia 111005 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus 9b near Hyden, Western Australia 111005 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus cf cinerea 1 (cult) San Francisco, CA 130704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf cinerea 2 (cult) San Francisco, CA 130704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf cinerea 3 (cult) San Francisco, CA 130704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf leucoxylon 'Rosea' 1 (cult) Hyden, Western Australia - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus cf leucoxylon 'Rosea' 2 (cult) Hyden, Western Australia - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus kruseana 1 near Hyden, Western Australia 111005 ( - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus kruseana 2 East Mount Barren, W of Hopetoun, Western Australia 111004 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus kruseana 3 East Mount Barren, W of Hopetoun, Western Australia 111004 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus kruseana 4 East Mount Barren, W of Hopetoun, Western Australia 111004 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus kruseana 5 East Mount Barren, W of Hopetoun, Western Australia 111004 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus kruseana 6 East Mount Barren, W of Hopetoun, Western Australia 111004 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus loxophloeba 1 Western Flora, Western Australia 110925 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus loxophloeba 2 Western Flora, Western Australia 110925 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 1 Perth Bot Garden, Western Australia 111008 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 13 Perth Bot Garden, Western Australia 111008 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 14 Perth Bot Garden, Western Australia 111008 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 15 Perth Bot Garden, Western Australia 111008 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 2 Perth Bot Garden, Western Australia 111008 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 3 Perth Bot Garden, Western Australia 111008 - Photo: Ingvar Kärnefelt (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 4 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 5 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 6 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 7 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 10 Port Moresby, Papua New Guinea 831104 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1a Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1b Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1c Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1f Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 1h Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 2a Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 2b Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 2c Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 2d Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 2e Bluff Knoll, Stirling Range, Western Australia 111001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4a Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4b Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 4c Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 5a Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus 5b Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf forrestiana 1 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf forrestiana 2 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf forrestiana 3 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf forrestiana 4 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus cf forrestiana 5 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus deglupta Gunung Nokilalaki, Sulawesi 8103 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 10 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 11 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 12 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 8 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Eucalyptus macrocarpa ssp elachantha 9 Perth Bot Garden, Western Australia 111008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).