Arisaema 2a Lund Bot Garden 070524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 6c Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema amurense 4 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema cf erubescens 1 Stone Forest, Kunming, Yunnan 110705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema cf erubescens 2 Stone Forest, Kunming, Yunnan 110705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 1a Bergianska 070221 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 1b Bergianska 070221 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 2b Lund Bot Garden 070524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 3 (cult) Brunnby, Skåne 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 4 Bergianska 040911 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 5 Bot Dept, Stockholm Univ 070328 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 6a Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema 6b Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema amurense 1 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema amurense 2 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema amurense 3 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema atrorubens 1 Storrs, Connecticut 900514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema atrorubens 2 Storrs, Connecticut 900514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema atrorubens 3 Storrs, Connecticut 900514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema fimbriatum (Magnus Lidén) - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema japonicum 1 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema japonicum 2 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema sikokianum 1 Flinck's Garden, Bjuv Sk 070521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema sikokianum 2 Flinck's Garden, Bjuv Sk 070521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema sikokianum 3 Flinck's Garden, Bjuv Sk 070521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema triphyllum 1 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Arisaema triphyllum 2 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).