Aloe 3a Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 4d Harold Porter Bot Garden, South Africa 160926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe aloides 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe aloides 4 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe bellatula 2 Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe buhrii 2 Little Karoo Desert National Bot Garden, Worcester, Western Cape, South Africa 161005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe buhrii 3 Little Karoo Desert National Bot Garden, Worcester, Western Cape, South Africa 161005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 12 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 2 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 3 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 4 Lund Bot Garden 090327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 5 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 6 Lund Bot Garden 090327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 7 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 8 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf africana 3 Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf microstigma 1 Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf microstigma 2 Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 3 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 4 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 5 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe comptonii 2 S of Calitzdorp, Western Cape, South Africa 161003 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe comptonii 5 Kirstenbosch Bot Garden 100906 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe dawei 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe deserti 2 Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe ferox 3 Bontebok Nature Reserve, Western Cape, South Africa 011025 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe ferox 4 Bontebok Nature Reserve, Western Cape, South Africa 011025 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 13 (cult) Lund Sk 230319 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 7 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe jucunda 3 Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe latifolia 2 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe pearsonii 1 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe pearsonii 2 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe perfoliata 1 Puerto de la Cruz Bot Garden, Tenerife 160410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe perfoliata 2 Puerto de la Cruz Bot Garden, Tenerife 160410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe perfoliata 3 Puerto de la Cruz Bot Garden, Tenerife 160410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe perfoliata 4 Puerto de la Cruz Bot Garden, Tenerife 160410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe pictifolia 1 Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe sinkatana 1 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe sinkatana 2 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe sinkatana 3 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe spicata 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 3 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 4 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 5 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 6 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 1a Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 1b Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 2a Kogelberg, Western Cape, South Africa 100917 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 2b Kogelberg, Western Cape, South Africa 100917 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 4a Harold Porter Bot Garden, South Africa 160926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 4b Harold Porter Bot Garden, South Africa 160926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe 4c Harold Porter Bot Garden, South Africa 160926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe aloides 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe aloides 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe bellatula 1 Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe broomii Kirstenbosch Bot Garden 011027 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe buhrii 1 Little Karoo Desert National Bot Garden, Worcester, Western Cape, South Africa 161005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 1 Lund Bot Garden 090327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 10 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 11 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe camperi 9 Lund Bot Garden 140305 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf africana 1 Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf africana 2 Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf lineata 1 Little Karoo Desert National Bot Garden, Worcester, Western Cape, South Africa 161005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf lineata 2 Little Karoo Desert National Bot Garden, Worcester, Western Cape, South Africa 161005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf microstigma 3 Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf microstigma 4 Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 1 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 2 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 6 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 7 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe cf speciosa 8 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe comptonii 1 S of Calitzdorp, Western Cape, South Africa 161003 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe comptonii 3 S of Calitzdorp, Western Cape, South Africa 161003 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe comptonii 4 Kirstenbosch Bot Garden 100906 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe dawei 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe dawei 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Aloe ferox 1 SW of Oudtshoorn, Western Cape, South Africa 100926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe ferox 2 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 1 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 10 (cult) Lund Sk 230329 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 11 (cult) Lund Sk 230319 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 12 (cult) Lund Sk 230319 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 2 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 3 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 4 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 5 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 6 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 8 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe humilis 9 (cult) Lund Sk 140213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe jucunda 1 Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe jucunda 2 Copenhagen Bot Garden 121205 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe latifolia 1 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe pearsonii 3 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe pictifolia 2 Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Aloe pseudorubroviolacea 2 Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe pseudorubroviolacea 3 Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Aloe schelpei 2 Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe spicata 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe spicata 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 1 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 2 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 7 N of Riversdale, Western Cape, South Africa 100924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe striata 8 Kirstenbosch Bot Garden 100906 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe vera 1 Taganana, Anaga, Tenerife 160407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe vera 2 Taganana, Anaga, Tenerife 160407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe vera 3 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe vera 4 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Aloe vera 5 Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).