The 117 genera of Araceae with number of species, number and percentage of species with chromosome counts, diploid chromosome numbers and coded ancestral haploid chromosome numbers in the three coding schemes used in this study (see Methods). X = unknown.

	Genera	Spp. number	Spp. counted	%	Counted diploid chromosome numbers 2n =	All polymorphic n =	Reduced polymorphic n =	Informed n =
1	Aglaodorum	1	1	100	40	20	20	20
2	Aglaonema	23	6	26	14, 40, 100	7, 20, 50	7, 20, 50	20
3	Alloschemone	2	1	50	84	42	42	42
4	Alocasia	107	17	16	24, 26. 28, 40,42, 56, 68, 70, 84	12, 13, 14, 20, 21, 28, 34, 35, 42	12, 13, 14, 20, 21, 28, 34, 35, 42	14
5	Ambrosina	1	1	100	22	11	11	11
6	Amorphophallus	196	47	24	26, 28, 39	13, 14	13, 14	13
7	Amydrium	5	2	40	60	30	30	30
8	Anadendrum	11	3	27	60	30	30	30
9	Anaphyllopsis	3	1	33	26	13	13	13
10	Anaphyllum	2	2	100	26	13	13	13
11	Anchomanes	6	3	50	40	20	20	20
12	Anthurium	903	171	19	14, 20, 24, 26, 28, 29, 30 + Bs, 34, 36, 40, 48, 49, 56, 60, 84, approx. 90, approx. 124	7, 13, 15, 17, 18, 30	7, 13, 15, 17, 18, 30	15
13	Anubias	8	8	100	48	24	24	24
14	Apoballis	12	6	50	26, 39, 56	13, 28	13	13
15	Aridarum	10	4	40	24, 26	12, 13	12, 13	12, 13
16	Ariopsis	2	1	50	28, 84, 86	14, 42, 43	14	14
17	Arisaema	150	97	65	20, 24, 26, 28, 32,42, 48, 52, 56, 64, 70, 72, 84, 112, 140, 168	10, 12, 13, 14, 16, 21, 24, 26, 28, 32, 42, 56, 70, 84	10, 12, 13, 14, 16, 21, 24, 26, 28, 32, 42, 56, 70, 84	14
18	Arisarum	4	2	50	14, 28, 42, 52, 56	7, 14, 21, 26, 28	7, 14, 21, 26, 28	14
19	Arophyton	7	6	86	38, 40, 54, approx. 76	19, 20, 27	19, 20, 27	19
20	Arum	29	26	90	28, 29, 30, 42, 56, 63, 70, 84	14, 15, 21, 28, 35, 42	14	14
21	Asterostigma	8	2	25	34	17	17	17
22	Bakoa	2	2	100	26	13	13	13
23	Biarum	21	12	57	16, 18, 22, 24, 26, 32, 36, 40, 74, approx. 96, 98, 108	8, 9, 11, 12, 13, 16, 18, 20, 37, 49, 54	8, 9, 11, 12, 13, 16, 18, 20, 37, 49, 54	13
24	Bognera	1	1	100	34	17	17	17
25	Bucephalandra	3	3	100	26	13	13	13
26	Caladium	12	6	50	19, 22, 26, 28, 30	11, 13, 14, 15	11, 13, 14, 15	13, 14
27	Calla	1	1	100	36, 54, 60, 72	18, 27, 30, 36	18	18
28	Callopsis	1	1	100	36	17	17	17
29	Carlephyton	3	3	100	54, 108	27, 54	27	27
30	Cercestis	10	6	60	approx. 36, 42	21	21	21
31	Chlorospatha	28	2	7	26	13	13	13
32	Colletogyne	1	1	100	44, 46, 54	22, 23, 27	27	27
33	Colocasia	16	5	31	26, 28, 30, 36, 38, 42, 44, 46, 48, 52, 58, 84, 116	13, 14, 15, 18, 19, 21, 22, 23, 24, 26, 42, 58	13, 14, 15, 18, 19, 21, 22, 23, 24, 26, 42, 58	14
34	Croatiella	1	1	100	34	17	17	17
35	Cryptocoryne	60	64	107	20, 22, 28, 30, 33, 34, 36, 42, 54, 56, 66, 68, 70, 72, 85, 88, 90, 102, 112, approx. 132	10, 11, 14, 15, 17, 18, 21, 27, 28, 33, 34, 35, 36, 44, 45, 51, 56	10, 11, 14, 15, 17, 18, 21, 27, 28, 33, 34, 35, 36, 44, 45, 51, 56	17, 18
36	Culcasia	24	9	38	approx. 40, 42	21	21	21
37	Cyrtosperma	12	4	33	24, 26	12, 13	12, 13	13
38	Dieffenbachia	57	14	25	34, 36, 40, 44, 68	17, 18, 20, 22, 34	17	17
39	Dracontioides	2	1	50	26	13	13	13
40	Dracontium	24	5	21	26	13	13	13
41	Dracunculus	2	2	100	28, 32	14, 16	14	14
42	Eminium	9	3	33	28	14	14	14
43	Epipremnum	15	3	20	60, 70, 84	30, 35, 42	30, 35, 42	30
44	Filarum	1	1	100	28	14	14	14
45	Furtadoa	2	1	50	40	20	20	20
46	Gearum	1	1	100	34, 68	17, 34	17	17
47	Gonatopus	5	4	80	34, approx. 68	17	17	17
48	Gorgonidium	8	3	38	34	17	17	17
49	Gymnostachys	1	1	100	48	24	24	24
50	Hapaline	8	2	25	26, 28	13, 14	13, 14	13, 14
51	Helicodiceros	1	1	100	56	14	14	14
52	Hestia	1	1	100	26	13	13	13
53	Heteropsis	17	1	6	26–28	13, 14	13, 14	14
54	Holochlamys	1	1	100	30, 60	15	15	15
55	Homalomena	117	24	21	38, 40, 42, 56	19, 20, 21, 28	19, 20, 21, 28	20
56	Incarum	1	1	100	34	17	17	17
57	Jasarum	1	1	100	22	11	11	11
58	Lagenandra	15	14	93	32, 36, approx. 72	16, 18	16, 18	18
59	Landoltia	1	1	100	40,46, 50	20, 23, 25	20	20
60	Lasia	2	1	50	26	13	13	13
61	Lasimorpha	1	1	100	26	13	13	13
62	Lazarum	23	2	9	approx. 118, 130, 152, approx. 160,168	59, 65, 76, 84	59, 65, 76, 84	X
63	Lemna	13	11	85	20, 30, 36, 40, 42, 44, 50, 60, 63, 64, 70, 80, 84, 126	10, 15, 18, 20, 21, 22, 25, 30, 32, 35, 40, 42, 63	20	20
64	Lysichiton	2	2	100	28	14	14	14
65	Mangonia	2	1	50	34	17	17	17
66	Monstera	39	5	13	24, 56, 58, 60	12, 28, 29, 30	30	30
67	Montrichardia	2	1	50	48	24	24	24
68	Nephthytis	6	5	83	36, 40, 60	18, 20, 30	18, 20	18, 20
69	Ooia	2	1	50	26	13	13	13
70	Orontium	1	1	100	26	13	13	13
71	Pedicellarum	1	1	100	24	12	12	12
72	Peltandra	2	1	50	112	56	56	56
73	Philodendron	483	31	6	26, 30, 32, 34, 36, 48, 54	13, 15, 16, 17, 18, 24, 27	13, 15, 16, 17, 18, 24, 27	17, 18
74	Philonotion	3	1	33	26	13	13	13
75	Phymatarum	1	1	100	26, 28	13	13	13
76	Pichinia	1	1	100	26	13, 14	13, 14	13
77	Pinellia	9	9	100	20, 26, 28, 39, 42, 52, 54, 72, 78, 90, 91, 99, 104, 108, 115, 116, 117, 128, 129	10, 13, 14, 21, 26, 27, 36, 39, 45, 52, 54, 58, 64	10, 13, 14, 21, 26, 27, 36, 39, 45, 52, 54, 58, 64	13
78	Piptospatha	10	6	60	26, 39	13	13	13
79	Pistia	1	1	100	14, 28	7, 14	7, 14	14
80	Podolasia	1	1	100	26	13	13	13
81	Pothoidium	1	1	100	24	12	12	12
82	Pothos	57	3	5	24, 36, 60	12, 18, 30	12	12
83	Protarum	1	1	100	28	14	14	14
84	Pseudodracontium	7	2	29	26	13	13	13
85	Pseudohydrosme	2	1	50	approx. 40	20	20	20
86	Pycnospatha	2	2	100	26	13	13	13
87	Remusatia	4	4	100	20, 28, 30, 42, 56	10, 14, 15, 21, 28	10, 14, 15, 21, 28	14
88	Rhaphidophora	98	8	8	26, 42, 54, 56, 60, approx. 120	13, 21, 27, 28, 30	28, 30	28, 30
89	Rhodospatha	29	3	10	28, 56, 60	14, 28, 30	14, 28	14
90	Sauromatum	9	7	78	26, 52, 54, 104	13, 26, 27, 52	13	13
91	Scaphispatha	2	1	50	28	14	14	14
92	Schismatoglottis	100	15	15	26, 30, 39, 52	13, 15, 26	13	13
93	Schottariella	1	0	0	–	X	X	X
94	Scindapsus	35	8	23	48, 60 (42, 56, 58, 64, 70, 112), approx. 110	28, 30	28, 30	28, 30
95	Spathantheum	2	2	100	34	17	17	17
96	Spathicarpa	4	1	25	34	17	17	17
97	Spathiphyllum	49	9	18	30, 60	15, 30	15	15
98	Spirodela	3	2	67	20, 30, 32, 36, 38, 40, 50, 80	10, 15, 16, 18, 19, 20, 25, 40	15, 20	15, 20
99	Stenospermation	50	4	8	28	14	14	14
100	Steudnera	9	4	44	28, 36,56	14, 18, 28	14	14
101	Stylochaeton	18	4	22	28, 56	14, 28	14, 28	14
102	Symplocarpus	5	2	40	30, 60	15, 30	15, 30	15
103	Synandrospadix	1	1	100	34	17	17	17
104	Syngonium	35	9	26	22, 24, 26, 28	11, 12, 13, 14	14	14
105	Taccarum	6	1	17	34	17	17	17
106	Theriophonum	5	5	100	16, 24, 32 (14, 18)	8, 12, 16	8	8
107	Typhonium	68	8	12	10, 16, 18, 20, 26, 36, 52,65	5, 8, 9, 10, 13, 18, 26	5, 6, 7, 8, 9, 10, 13, 18, 26	8, 13
108	Typhonodorum	1	1	100	112	56	56	56
109	Ulearum	2	2	100	14	7	7	7
110	Urospatha	12	1	8	52	26	26	26
111	Wolffia	11	8	73	16, 20, 22, 23, 30, 40, 42, 46, 50, 60, 62, 63, 70, 80	8, 10, 11, 15, 20, 21, 23, 25, 30, 31, 35, 40	20	20
112	Wolffiella	10	7	70	20, 40, 42, 50, 70	10, 20, 21, 25, 35	20	20
113	Xanthosoma	75	11	15	22, 26, 39, 52	11, 13, 26	11, 13, 26	13
114	Zamioculcas	1	1	100	34	17	17	17
115	Zantedeschia	8	7	88	32	16	16	16
116	Zomicarpa	3	2	67	20, 22	10, 11	10, 11	10
117	Zomicarpella	2	1	50	26	13	13	13
	Total	3309	847
	Mean			61