Table 1.
Carbon isotopic composition of species of Euphorbia with high to intermediate values of δ13C and CAM mode assigned by authors on the basis of leaf gas exchange, acid accumulation, δ13C and enzyme activity.
| Species | δ13C (‰) | Mode | Reference |
|---|---|---|---|
| angusta | −24.9 | NA | Webster et al. (1975) |
| antiquorum | −14.2 | NA | Batanouny et al. (1991) |
| aphylla | ND | Facultative | Mies et al. (1996) |
| avasmontana | −15.1 | Constitutive | Mooney et al. (1977) |
| bothae | −14.6 | Constitutive | Mooney et al. (1977) |
| bubalina | −13.2 | NA | Webster et al. (1975) |
| burmannii | −18.3 | NA | Mooney et al. (1977) |
| caducifolia | ND | Constitutive | Webster et al. (1975), Sayed (2001) |
| caput-medusae | −13.3 | Constitutive | Mooney et al. (1977) |
| cyathophora | −25.8 | NA | Mies et al. (1996) |
| didieroides | −26.6 | NA | Webster et al. (1975) |
| didieroides | −24.3 | NA | Winter (1979) |
| dregeana | ND | Constitutive | Sayed (2001) |
| drupifera | −14.1 | NA | Webster et al. (1975) |
| gariepina | −14.6 | Constitutive | Mooney et al. (1977) |
| genoudiana | −22.7 | NA | Winter (1979) |
| gorgonis | −12.9 | Constitutive | Mooney et al. (1977) |
| gragaria | −11.6 | Constitutive | Mooney et al. (1977) |
| grandidens | ND | Constitutive | Webster et al. (1975), Sayed (2001) |
| inermis | −13.4 | Constitutive | Mooney et al. (1977) |
| ingezalahiana | −23.6 | NA | Winter (1979) |
| inocua | −28.1 | NA | Webster et al. (1975) |
| leucodendron | −13.2 | NA | Winter 1979 |
| macropodoides | −28.3 | NA | Webster et al. (1975) |
| macropus | −28.9 | NA | Webster et al. (1975) |
| mauritanica | −16.0 | Constitutive | Mooney et al. (1977) |
| milii | ND | Non-CAM | Webster et al. (1975) |
| milii | CAM | McWilliams (1970) | |
| nesemannii | −11.6 | Constitutive | Mooney et al. (1977) |
| nivulia | −15.7 | NA | Webster et al. (1975) |
| nubica | −14.5 | NA | Batanouny et al. (1991) |
| pentagona | −14.9 | Constitutive | Mooney et al. (1977) |
| peperomioides | −25.6 | NA | Webster et al. (1975) |
| plagiantha | −13.2 | NA | Winter (1979) |
| polygona | −10.7 | Constitutive | Mooney et al. (1977) |
| pulcherrima | −25.5 | NA | Mies et al. (1996) |
| squarrosa | −12.5 | Constitutive | Mooney et al. (1977) |
| stenoclada | −12.6 | NA | Winter (1979) |
| submamillaris | ND | Constitutive | Webster et al. (1975), Sayed (2001) |
| tetragona | −14.7 | Constitutive | Mooney et al. (1977) |
| thi | −13.2 | NA | Batanouny et al. (1991) |
| tirucalli | −15.3 | Constitutive | Mies et al. (1996) |
| triangularis | −13.6 | Constitutive | Mooney et al. (1977) |
| trigona | −19.4 | NA | Webster et al. (1975) |
| xylophylloides | ND | Constitutive | Webster et al. (1975), Sayed (2001) |
NA, no mode assigned; ND, not determined.