Family	Ex	Ex/E	E	V	R	I	Total no. threatened1	Total no. species	% threatened
Lycosphens
Isoetaceae	2		11	4	22	2	39	79	49.7
Lycopodiaceae	1		3	6	11	3	23	519	4.4
Psilotaceae			1		1		2	7	30.8
Selaginellaceae	1		3	5	9	6	23	713	3.2
TOTAL	4	0	18	15	43	11	87	1,316	6.6
Ferns
Adiantaceae		1	6	4	16	11	38	712	5.3
Aspleniaceae		3	12	3	25	3	46	711	6.5
Blechnaceae			2	2	11	2	17	238	7.1
Cyatheaceae		1	10	36	100	55	202	623	32.4
Davalliaceae			1				1	130	0.8
Dennstaedtiaceae			1	1	9	4	15	486	3.1
Dicksoniaceae				3		1	4	41	9.8
Dryopteridaceae	2	5	12	10	41	7	75	464	16.2
Gleicheniaceae				1	3		4	140	2.9
Grammitidaceae			2	2	39	22	65	500	13.0
Hymenophyllaceae			4	4	18	1	27	600	4.5
Lomariopsidaceae			4	1	12		17	615	2.8
Loxsomataceae			1	1			2	4	50.0
Marattiaceae			3	1	6	1	11	204	5.4
Marsileaceae			3	2	1	2	8	67	11.9
Oleandraceae				2			2	91	2.2
Ophioglossaceae			6	5	12		23	81	28.4
Osmundaceae				1		1	2	18	11.1
Parkeriaceae					1		1	4	25.0
Plagiogyriaceae					2		2	36	5.6
Polypodiaceae	1	1	3	6	12	4	26	1,068	2.4
Pteridaceae			3	3	8	5	19	259	7.3
Schizaeaceae				1	1	1	3	143	2.1
Thelypteridaceae	1		9	5	19	8	41	1,000	4.1
Vittariaceae					2		2	113	1.8
Woodsiaceae	1	2	3	3	17	5	30	705	4.3
TOTAL	5	13	85	97	355	133	683	9,053	7.5
Gymnosperms: Gnetopsida (gnetophytes)
Ephedraceae					1		1	40	2.5
TOTAL	0	0	0	0	1	0	1	40
Gymnosperms: Pinopsida (conifers)
Araucariaceae			5	11	13	1	30	38	78.9
Cephalotaxaceae			1	3		1	5	7	71.4
Cupressaceae	1	1	17	19	21	6	64	130	49.2
Pinaceae			17	50	62	4	133	250	53.2
Podocarpaceae			5	28	33	4	70	125	56.0
Taxaceae			4	7	3	1	15	20	75.0
Taxodiaceae			2	4	4		10	16	62.5
TOTAL	1	1	51	122	136	17	327	586	55.8
Gymnosperms: Ginkopsida (ginkgo)
Ginkgoaceae					1		1	1	100.0
TOTAL	0	0	0	0	1	0	1	1	100.0
Gymnosperms: Cycadopsida (cycads)
Cycadaceae	1		5	11	4		20	35	57.1
Stangeriaceae					1		1	1	100.0
Zamiaceae	2		39	50	36	3	128	144	88.9
TOTAL	3	0	44	61	41	3	149	180	82.8
Dicotyledons
Acanthaceae	7	1	63	67	192	106	429	2,500	17.2
Aceraceae			2	2	7	3	14	112	12.5
Actinidiaceae			2	1	1	1	5	300	1.7
Aizoaceae	7		16	20	86	41	163	2,500	6.5
Alzateaceae					1		1	1	100.0
Amaranthaceae	4	1	9	4	24	6	44	900	4.9
Anacardiaceae		1	12	19	39	15	86	600	14.3
Ancistrocladaceae			1	1			2	18	11.4
Anisophylleaceae					2		2	40	5.0
Annonaceae		2	24	36	91	59	212	2,300	9.2
Apocynaceae	5	1	33	31	70	14	149	2,000	7.5
Aquifoliaceae	1	1	6	4	18	8	37	370	10.0
Araliaceae			30	22	36	19	107	700	15.3
Aristolochiaceae			5	3	23	4	35	600	5.8
Asclepiadaceae	9	3	72	60	199	86	420	2,000	21.0
Balanopaceae					1		1	9	11.1
Balanophoraceae			1	1	3		5	45	11.1
Balsaminaceae	1	3	5		12	49	69	450	15.3
Basellaceae			1	1	3		5	18	28.6
Begoniaceae	1	1	14	8	28	13	64	1,020	6.3
Berberidaceae			5	12	15	11	43	650	6.6
Betulaceae			2	1	8	2	13	125	10.4
Bignoniaceae			34	43	73	5	155	800	19.4
Bombacaceae			11	3	7	3	24	200	12.0
Boraginaceae	8	6	43	82	211	36	378	2,000	18.9
Bretschneideraceae					1		1	1	100.0
Brunelliaceae			29	19	9		57	62	91.9
Bruniaceae	4		3	2	8	4	17	75	22.7
Buddlejaceae				2	10	2	14	150	9.3
Burseraceae			9