Jennifer A. Rudgers and Mark C. Gardner. 2004. Extrafloral nectar as a resource mediating multispecies interactions. Ecology 85:1495–1502.

Appendix A. A table showing the total number of ant species recorded visiting plants with extrafloral nectaries (for plants that have facultative associations with ants).

Plant	Number of species	Location	Reference†
Acacia pycnantha	24	South Australia	O�Dowd (1979)
Anacardium occidentale	12	India, Sri Lanka, Malaysia	Rickson and Rickson (1998)
Aphelandra deposeana	8	Costa Rica	Deuth (1977)
Bixa orelllana	12	Costa Rica	Bentley (1977)
Byttneria aculeata	24	Costa Rica	Hespenheide (1985)
Calathea ovandensis	15	Veracruz, Mexico	Horvitz and Schemske (1990)
Caryocar brasiliense	12	Sao Paulo, Brazil	Oliveira (1997)
Cassia fasciculata	12	Florida, USA	Barton (1986)
Cassia fasciculata	9	Iowa, USA	Kelly (1986)
Catalpa bignoniodes	5	Michigan, USA	Stephenson (1982)
Caularthron bilamellatum	11	BCI, Panama	Fisher et al. (1990)
Costus (4 spp.)	12–24‡	BCI, Panama	Schemske (1982)
Costus woodsonii	7	BCI, Panama	Schemske (1980)
Fallopia japonica Fallopiasachalinensis	6	Japan	Kawano et al. (1999)
	5	Japan
Ferocactus gracilis	11	Baja, Mexico	Blom and Clark (1980)
Gossypium thurberi	12	Arizona, USA	Rudgers in press
Helianthella quinquenrvis	5	Colorado, USA	Inouye and Taylor (1979)
Inga densiflora Inga punctata	6	Costa Rica	Koptur (1984)
	11	Costa Rica
Ipomoea carnea	27	Costa Rica	Keeler (1977)
Ipomoea leptophylla	10	Nebraska, USA	Keeler (1980)
Ipomoea pandurata	10	North Carolina, USA	Beckmann and Stucky (1981)
Macaranga hosei Macaranga tanarius	10	Malaysia	Fiala et al. (1994)
	16	Malaysia
Mentzelianuda	5	Nebraska, USA	Keeler (1981)
Opuntiastricta	9	Veracruz, Mexico	Oliveira et al. (1999)
Passiflora incarnata	5	Georgia, USA	McLain (1983)
Passiflora quadrangularis Passiflora vitifolia	15	Costa Rica	Smiley (1986)
	20	Costa Rica
Polypodium (2 spp.)	5	Veracruz, Mexico	Koptur et al. (1998)
Pteridiumaquilinum	8	New Jersey, USA	Tempel (1983)
Schomburgkia tibicinis	13	Yucatan, Mexico	Rico-Gray and Thien (1989)
Stryphnodendron microstachyum	23	Costa Rica	de la Fuente and Marquis (1999)
Vicia sativa/angustifolia	1	England, UK	Koptur and Lawton (1988)
Mean	11.7 � 6.5 SD

^†References were included only if they provided a complete list of species.

^‡Maximum number was used in calculating the mean.

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