Table 2.
Genera of angiosperms in the Juan Fernández Archipelago that have speciated cladogenetically (involving adaptive radiation) or both cladogenetically and anagenetically, with numbers of species occurring on each island
| Mode of speciation | RC Island | AS Island | Life form typical of genus | Total number of species in progenitor genus | Dispersal mode |
|---|---|---|---|---|---|
| Cladogenesis | |||||
| Centaurodendron, Yunquea | 3 | Herbs | Endemic, out of Centaurea, 650 spp | Autochory | |
| Chenopodium | 3 | Herbs | 100 spp | Anemochory | |
| Coprosma | 2 | Herbs, shrubs, trees | 100 spp | Autochory | |
| Cuminia | 2 | Shrubs | Endemic, near Monardella and Mintho-stachys; 52 spp | Autochory | |
| Erigeron | * | 6 | Herbs | 390 spp | Anemochory |
| Eryngium | 3 | Herbs | 250 spp | Epizoochory | |
| Urtica | ** | 2 | Mostly herbs | 70 spp | Anemochory |
| Cladogenesis and anagenesis | |||||
| Carex | 2 | 1 | Herbs | 2000 spp | Anemochory (endozoochory) |
| Dendroseris | 8 | 3 | Mostly herbs | Endemic, out of Sonchus, 62 spp | Autochory |
| Gunnera | 2 | 1 | Herbs | 40 spp | Autochory |
| Megalachne | 2 | 1 | Herbs | Endemic, out of Bromus or Festuca, 150 or 450 spp | Anemochory (endozoochory) |
| Peperomia | 3 | 1 | Herbs | 1600 spp | Epizoochory |
| Robinsonia | 7 | 1 | Herbs | Endemic, from Senecio; 1000 spp | Autochory |
| Wahlenbergia | 3 | 2 | Herbs and shrubs | 125 spp | Anemochory |
*Erigeron fernandezia also occurs on Robinson Crusoe Island, perhaps an historical introduction (López-Sepúlveda et al. 2015)
**Urtica glomerosa occurs also on Robinson Crusoe Island, but the reasons for this distribution are unknown
Cladogenesis is certified when there are two or more species within the same island. Inferences on type of species from Stuessy et al. (2017a). Species numbers from Mabberley (2008) and other sources, dispersal mode from Bernardello et al. (2006)