Table 1.

Paphiopedilum species studied, diploid chromosome numbers, rDNA FISH patterns, and 5S-NTS sequence polymorphic sites

		Number of rDNA sites				Positions of rDNA sitesb
			5S		25S+5S
Taxon	2n	25S	major	visible sitesa	Co-localization	5S	25S	5S-NTS Polymorphic sites
Paphiopedilum
Subg. Parvisepalum
Sect. Parvisepalum
armeniacum	26	4	2	2	2	st	t	104
delenatii	26	2	2	2	0	st	t	178
emersonii	26	4	2	2	2	st	t	124
hangianum	26	4	2	2	2	st	t	120
malipoense	26	2	2	2	1	st	t	94
micranthum	26	4	2	2	2	st	t	59
Subg. Paphiopedilum
Sect. Concoloria
bellatulum	26	2	2	2	0	i	t	118
niveum	26	2	2	2	0	i	t	198
Sect. Cochlopetalum
liemianum	32	2	4	22	2	st, i, p, c	t	162
moquettianum	34	2	4	20	2	st, i, p, c	t	225
primulinum	32	2	4	25	2	st, i, p, c	t	71
victoria-regina	34	2	4	24	2	st, i, p, c	t	137
Sect. Paphiopedilum
druryi	30	2	4	16	0	st, i, p, c	t	184
fairrieanum	26	2	2	14	2	st, i, p, c	t	146
henryanum	26	2	2	17	2	st, i, p, c	t	180
hirsutissimum	26	2	6	21	2	st, i, p, c	t	182
tigrinum	26	2	6	17	2	st, i, p, c	t	141
Sect. Coryopedilum
adductum	26	9	4	28	6	st, i, p, c	t, st	180
gigantifolium	26	6	6	32	6	st, i, p, c	t	210
glanduliferum	26	4	4	26	4	st, i, p, c	t	202
randsii	26	4	4	30	4	st, i, p, c	t, st	187
sanderianum	26	2	4	16	0	st, i, p, c	t	143
stonei	26	2	4	25	2	st, i, p, c	t	114
supardii	26	9	4	26	7	st, i, p, c	t	226
Sect. Pardalopetalum
dianthum	26	2	4	28	2	st, i, p, c	t	251
haynaldianum	26	4	4	8	2	st, i, p, c	t	110
lowii	26	6	4	28	4	st, i, p, c	t, st	161
parishii	26	4	4	34	4	st, i, p, c	t	189
Sect. Barbata
acmodontum	38	2	4	4	0	i	t	169
curtisii	36	2	2	2	0	i	t	164
dayanum	36	2	4	6	0	i, p	t	169
hennisianum	34	2	2	6	0	i	t	153
purpuratum	40	2	4	8	0	st, i	t	138
sangii	38	2	4	18	0	st, i	t	118
sukhakulii	40	2	2	13	0	st, i	t	151
venustum	40	2	4	8	2	i	t	109
wardii	42	2	4	4	0	i	t	159

^a Minimum numbers of visible 5S rDNA FISH signals, including numbers of both major and visible dispersed sites.

^b st, subtelomeric; t, telomeric; i, interstitial; p, pericentromeric; c, centromeric