Table 1. Results of similarity analysis (cover and presence SIMPER analysis) for vascular plant species.

Species	Growth form	Origin	Average cover (%)			**Contribution
			*0-60	*60-100		(%)
Cover dissimilarity  =  85.85%
Scalesia pedunculata	tree	endemic	56.5		13.6	8.6
Cestrum auriculatum	tree	introduced	28.6		6.2	6.3
Asplenium auritum	fern	native	23.9		5.2	5.8
Blechnum occidentale	fern	native	15.5		13.5	5.1
Ichnanthus nemorosus	herb	native	18.8		1.5	4.9
Chiococca alba	shrub	native	16.5		3	4.5
Thelypteris pilosula	fern	native	10.4		4.1	4
Passiflora colinvauxii	vine	endemic	6.9		8.6	3.9
Blechum pyramidatum	herb	native	11.3		0.6	3.6
Passiflora edulis	vine	introduced	8.2		6.5	3.5
			Presence (%)
			* 0-60	* 60-100
Presence/absence dissimilarity = 71.41%
Scalesia pedunculata	tree	endemic	80.2	36.8		4.8
Cestrum auriculatum	tree	introduced	65.1	34.2		4.7
Asplenium auritum	fern	native	64	34.2		4.6
Ichnanthus nemorosus	herb	native	54.7	18.4		4.3
Thelypteris pilosula	fern	native	47.7	44.7		4.2
Chiococca alba	shrub	native	48.8	31.6		4.1
Blechnum occidentale	fern	native	38.4	42.1		4
Psychotria rufipes	shrub	native	45.3	15.8		3.9
Passiflora colinvauxii	vine	endemic	60.5	76.3		3.9
Doryopteris pedata	fern	native	44.2	18.4		3.8
Passiflora edulis	vine	introduced	32.6	36.8		3.7
Tournefortia rufo-sericea	shrub	native	36	26.3		3.5

Species are listed in descending order according to contribution to compositional dissimilarities between two broad R. niveus cover categories (0–60%, n = 86; 60–100%; n = 38). Only species contributing up to approximately 50% of the total are shown.

^* R. niveus cover categories.

^**Individual species contribution to dissimilarities between cover categories.