Table 2.

IUCN Criteria, 2001 for conservation classes.

Availability	Collection
0 = Uncommon or very rare	0 = More than 1000 kg/year
1 = Less common or rare	1 = Consumed from 500–1000 kg/year
2 = Occasional	2 = Consumed from 300–500 kg/year
3 = Abundant	3 = Consumed from 100–200 kg/year
Growth	Part used
0 = Regrowth in more 3 years	0 = Root/Whole
1 = Regrowth within 3 years	1 = Bark
2 = Regrowth within 2 years	2 = Seeds, Fruits
3 = Regrowth within 1 year	3 = Flowers
4 = Regrowth in a season	4 = Leaves/Gum/Latex
Total Score
0–4	Endangered
5–8	Vulnerable
9–12	Rare
13–14	Infrequent
15–16	Dominant