Acaena anserinifolia 1 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 10 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 11 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 12 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 2 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 3 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 6 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 7 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 8 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 9 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena buchananii 1 Horsabäck Garden, Våxtorp, Halland 130617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena buchananii 2 Horsabäck Garden, Våxtorp, Halland 130617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena buchananii 3 Horsabäck Garden, Våxtorp, Halland 130617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena buchananii 4 Horsabäck Garden, Våxtorp, Halland 130617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena buchananii 5 Horsabäck Garden, Våxtorp, Halland 130617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena magellanica 1 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena magellanica 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena magellanica 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 1 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 10 Lund Bot Garden 130610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 11 Lund Bot Garden 130610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 2 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 4 Lund Bot Garden 080612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 5 Lund Bot Garden 080612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 6 Lund Bot Garden 080612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 9 Lund Bot Garden 130610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena novae-zelandiae 2 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena ovalifolia 1 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena ovalifolia 2 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena ovalifolia 3 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena ovalifolia 4 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena ovalifolia 6 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 3 near Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 4 between eastern Santiago and Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 5 between eastern Santiago and Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 6 between eastern Santiago and Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 7 between eastern Santiago and Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 8 between eastern Santiago and Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena sericea 1 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena sericea 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena sericea 3 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena sericea 4 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena sericea 5 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena sericea 6 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 4 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena anserinifolia 5 Lake Rotokare E of Eltham NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena cf ovina 1 Turangi NZ 151117 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena cf ovina 2 Turangi NZ 151117 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena cf ovina 3 Turangi NZ 151117 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena cf ovina 4 Turangi NZ 151117 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena cf ovina 5 Turangi NZ 151117 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena cf ovina 6 Turangi NZ 151117 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena cf ovina 7 Turangi NZ 151117 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

Acaena macropoda 1 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena macropoda 2 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena macropoda 3 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena macropoda 4 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena magellanica 3 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena magellanica 5 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena magellanica 6 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 12 Lund Bot Garden 150612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 3 Lund Bot Garden 070720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 7 Lund Bot Garden 130610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena microphylla 8 Lund Bot Garden 130610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena myriophylla 1 Lund Bot Garden 140721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena myriophylla 2 Lund Bot Garden 140721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena myriophylla 3 Lund Bot Garden 140721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena novae-zelandiae 1 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena novae-zelandiae 3 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena novae-zelandiae 4 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena ovalifolia 5 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena ovalifolia 7 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 1 near Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acaena pinnatifida 2 near Farellones, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).