The amount of information in the Herb Data NewZealand library is hard to conceive.
Looking more like an alternate therapists dream, it holds practical information such as how to build a steam distillation plant
The bulk of the library is links to data on a large number of plants. Each plant is described in a detailed page including mongraphs and articles. Scattered through these links are articles on everything from anatomic terms and images, through arrow poisons to dyes and tans.
The link is of course the plant material and its use with a focus on health.
This information is useful just as a reference, but would presumably be in valuable to a business person looking to start an activity in this sector.