Table 1.

Comparison of relative fertility of males to hermaphrodites across studies and components of male fertility

Species	Proportion males	Mating system1	Flower number	Anther number	Pollen production2	Pollen viability	Siring success	Study
Astilbe biternata	0·52	–	1·06	–	–	–	–	Olson (2001)
Circium arvense3	0·71	–	1·11	–	1·12–1·81	1·03	–	Kay (1985)
Clusia nemorosa	–	SC	3·30	1·33–5·33	–	1·00	–	Lopes and Machado (1998)
Coccoloba cereifera3	0·16	–	1·67–2·18	–	1·50–4·21	1·07–1·19	–	Silva et al. (2008)
Fraxinus excelsior	0·33	SI	–	–	–	–	≥ 10	Morand-Prieur et al. (2003)
Jacaratia mexicana	0·38	–	–	1·72	–	–	–	Aguirre et al. (2009)
Ochradenus baccatus	0·53	SC	0·25	1·01	1·954	–	–	Wolfe and Shmida (1997)
Opuntia robusta	0·09	SC	M > H5	–	6·50	–	–	Del Castillo and Argueta (2009)
Pachycereus pringlei	0·23	SC	1·56	–	1·52	–	–	Fleming et al. (1994)
Schiedea globosa	0·46	SC	0·586	0·97	1·03	–	–	Sakai and Weller (1991)
Silene acaulis subsp. acaulis	0·31	SC	1·09	–	1·21	1·63	0·94	Phillip et al. (2009)
Silene acaulis subsp. cenisia	–	–	0·70	–	M = H	M = H	–	Maurice et al. (1998)
Wurmbea dioica	0·50	SC	1·09	–	1·12/2·117	0·948	–	Jones and Burd (2001)
Wurmbea dioica	0·50	SC	1·03	–	1·2–1·4	1·04–1·11	–	Ramsey and Vaughton (2001)

Values in bold indicate where male and hermaphrodite fertilities were found to be significantly different by the authors.

¹ Mating system of hermaphrodites (SC, self-compabtile; SI, self-incompatible).

² Pollen production per plant, flower or anther.

³ Estimates depend on hermaphrodite morph (n = 2) examined.

⁴ Stamen biomass per flower.

⁵ Where fertilities were not directly reported or difficult to estimate from figures, we present the direction of the relationship as reported by the authors.

⁶ Flowers per infloresence*infloresence per genet.

⁷ Larger ratio based on estimate adjusted for differences in perianth size.

⁸ Pollen grain size.