TABLE 1.
δ13C data for sampled species from the Nyctaginaceae showing number of accepted species for each genus and the number of species sampled, the range of δ13C for species means and number of C4 species we identified.
| Tribe and genus | Accepted species number/sampled species number | δ13C range of species means | Number of C4 species in Supplementary Table 2 |
| Boldoeae | |||
| Salpianthus Humb. & Bonpl. | 5/3 | −28.8 to −27.4 | 0 |
| Bougainvilleeae | |||
| Belemia Pires | 1/1 | non-Kranz anatomy | 0 |
| Phaeoptilum Radlk. | 1/1 | −24.4 | 0 |
| Caribeeae | |||
| Cryptocarpus H.B.K. | 1/1 | −27.2 | 0 |
| Colignonieae | |||
| Colignonia Endl. | 6/6 | −28.7 to −25.3 | 0 |
| Leucastereae | |||
| Andradea Allemão | 1/1 | −26.0 | 0 |
| Leucaster Choisy | 1/1 | −28.8 | 0 |
| Ramisia Glaz. ex Baillon | 1/1 | −24.3 | 0 |
| Nyctagineae | |||
| Abronia Juss. | 24/20 | −29.5 to −24.5 | 0 |
| Acleisanthes A. Gray | 17/14 | −28.0 to −23.9 | 0 |
| Allionia L. | 2/2 | −13.3 to −13.2 | 2 |
| Anulocaulis Standl. | 5/5 | −28.0 to −24.2 | 0 |
| Boerhavia L. | 40/43 | −14.9 to −9.4 | 43 |
| Commicarpus Standl. | 25/23 | −28.7 to −25.2 | 0 |
| Cyphomeris Standl. | 2/2 | −28.1 to −27.2 | 0 |
| Mirabilis L. | 54–60/23 | −29.8 to −22.6 | 0 |
| Nyctaginia Choisy | 1/1 | −26.2 | 0 |
| Okenia Schldl. & Cham. | 1/4 | −14.0 to −12.3 | 4 |
| Tripterocalyx | 4 | 27.8 to 24.9 | 0 |
| Pisonieae | |||
| Pisoniella (Heimerl) Standl. | 1/1 | −25.8 | 0 |
| Grajalesia Miranda | 1/1 | −25.7 | 0 |
| Cephalotomandra Karst. & Triana | 1 | −28.8 | 0 |
C4 genera are highlighted in bold. See Supplementary Tables 2,3 for herbarium specimens, collection information and individual δ13C values. Accepted species numbers follows Spellenberg, 2003, Tropicos (2020), and the International Plant Names Index (IPNI, 2020). Sampled species number includes species listed in Supplementary Tables 2,3 whose acceptability is uncertain. Belemia fucsiodes is a type specimen examined with a dissecting scope for vein density only.