Table S1 Cacti species with unisexual reproductive systems. It is calculated that Cactaceae includesaround 2000 species (Anderson, 2001) from which 26 species have a reproductive system (dioecious, gynodioecious, subdioecious or trioecious) different to the hermaphrodite. These species are distributed in 9 genus that belong to three subfamilies: Pereskioideae, Opuntioideae and Cactoideae.

SPECIES / SEXUAL SYSTEM / REFERENCE
SUBFAMILY PERESKIOIDEAE
Pereskia zinniiflora / Dioecious / (Leuenberger 1986)
Pereskia portulacifolia / Dioecious / (Leuenberger 1896)
Pereskia quisqueyana / Dioecious / (Leuenberger 1986)
Pereskia marcanoi / Dioecious / (Areces-Mallea 1992)
SUBFAMILY OPUNTIOIDEAE
Opuntia stenopetala / Dioecious / (Bravo-Hollis 1978)
Opuntia robusta / Hermaphrodite, dioecious and trioecious / (Del Castillo 1986)
Opuntia quimilo / Gynodioecious / (Díaz and Cocucci 2003)
Opuntia quitensis / Dioecious / (Anderson 2001)
Consolea spinosissima / Subdioecious ordioecious / (Strittmatter et al. 2002;
2006)
Consolea corallicola / Dioecious / (Negrón-Ortiz and Strittmatter 2004)
Consolea rubescens / Dioecious / (Strittmatter et al. 2006)
Consolea millspaughii / Dioecious / (Strittmatter et al. 2006; 2008)
Consolea moniliformis / Dioecious / (Strittmatter et al. 2006; 2008)
Consolea nashii / Dioecious / (Strittmatter et al. 2006; 2008)
Consolea picardae / Dioecious / (Strittmatter et al. 2006; 2008)
Cylindropuntia molesta ≈ Opuntia molesta / Gynodioecious / (Rebman 1998; Rebman and Pinkava 2001)
Cylindropuntia calmalliana ≈ Opuntia calmalliana / Gynodioecious / (Rebman 1998; Rebman and Pinkava 2001)
Cylindropuntia sanfelipensis ≈ Opuntia sanfelipensis / Gynodioecious / (Rebman 1998; Rebman and Pinkava 2001)
Cylindropuntia wolfii ≈ Opuntia wolfii / Gynodioecious / (Rebman 1998)
SUBFAMILY CACTOIDEAE
Mammillaria neopalmeri / Gynodioecious ortrioecious / (Lindsay andDawson 1952)
Mammillaria dioica / Gynodioecious ortrioecious / (Lindsay and Dawson 1952)
Selenicereus innesii / Gynodioecious / (Kimnach 1982)
Echinocereus coccineus / Dioecious orhermaphrodite / (Hoffman 1992)
Pachycereus pringlei / Trioecious orgynodioecious / (Fleming et al. 1994)
Echinocereus yavapaiensis / Dioecious / (Baker 2006)
Echinocereus mombergerianus / Trioecious or gynodioecious / (Baker 2006)

References

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Baker M(2006) A new florally dimorphic hexaploid, Echinocereus yavapaiensis sp. nov. (section Triglochidiatus, Cactaceae) from central Arizona. Plant Syst Evol258:63-83

Bravo-Hollis H(1978)Las cactáceas de México. Vol. 1. Universidad Nacional Autónoma de México. México

Del Castillo R(1986) La selección natural de los sistemas de cruzamiento en Opuntia robusta. Tesis de Maestría. Colegio de Postgraduados Chapingo México. 133 pp

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