Table 2. Genetic diversity and rarity in Dendrosenecio based on 455 AFLP markers scored in 460 individual plants from 109 populations, representing all 11 species accepted by Knox [24].

Groups	Species abbreviation	Country	Mountain	n	DW	P (%)	D (sd)	PM
Genetic group
WRZ-Ruwenzori				124	0.75	52.09	0.068 (0.005)	31
D. adnivalis	ADN	Uganda	Mt Ruwenzori	92	0.76	45.93	0.051 (0.011)	20
D. erici-rosenii	ERI	Uganda	Mt Ruwenzori	32	0.71	29.67	0.045 (0.014)	6
WRZ/ERZ				119	1.36	72.75	0.078 (0.012)	74
D. battiscombei	BAT	Kenya	Mt Kenya	4	1.51	12.97	0.068	1
D. brassiciformis	BRA	Kenya	Mt Aberdare	18	1.02	25.93	0.050 (0.006)	4
D. cheranganiensis	CHE	Kenya	Cherangani Hills	10	2.00	24.18	0.071 (0.009)	6
D. elgonensis	ELG	Kenya	Mt Elgon	56	1.47	48.35	0.062 (0.018)	33
D. erici-rosenii	ERI	Uganda	Mt Muhavura	31	1.15	35.38	0.052 (0.010)	11
ERZ-Kenya/Aberdare				124	0.84	51.43	0.071 (0.009)	25
D. battiscombei	BAT	Kenya	Mt Aberdare	35	1.06	32.97	0.051 (0.014)	7
D. keniodendron	KND	Kenya	Mt Kenya	53	0.81	30.99	0.042 (0.012)	7
D. keniensis	KEN	Kenya	Mt Kenya	36	0.68	27.25	0.048 (0.009)	3
ERZ-Kili/Meru				93	1.03	48.35	0.074 (0.017)	37
D. johnstonii	JOH	Tanzania	Mt Kilimanjaro	17	0.68	19.78	0.046 (0.007)	2
D. kilimanjari	KIL	Tanzania	Mt Kilimanjaro	63	0.86	37.14	0.050 (0.009)	15
D. meruensis	MER	Tanzania	Mt Meru	13	2.31	27.47	0.084 (0.015)	13
Mountain group
Mt Kenya/Mt Aberdare				146	0.88	59.34	0.094	39
Mt Kilimanjaro/Mt Meru				93	1.03	48.35	0.081	37
Mt Ruwenzori/Mt Muhavura				155	0.83	62.42	0.082	47
Mt Elgon/Cherangani Hills				66	1.55	53.63	0.099	47

Calculations were made for the four mountain groups and for the main genetic groups inferred from STRUCTURE analyses. n—number of individuals successfully analysed, DW—frequency down-weighed marker value as a measure of genetic rarity, P(%)—percentage of polymorphic loci, D—average intra-population diversity (standard deviation in parenthesis), PM—number of private markers.