A link to this list arrived today:http://www.pfaf.org/user/cmspage.aspx?pageid=48
Not all of the list is all that useful; use some good judgment. Some of those fibers are hard to extract, some are too short, some are too weak.
It also depends on what you intend to do with them. Fabric for gathering up produce (for example, gunny sacks) does not have to be fine quality.
Ramie is considered a fine textile, but it does have some issues, for example, it creases like Linen. It is often compared to Linen. Also it's strength is variable, but over all fairly strong. The fibers are encased in a gummy matrix, so it's probably somewhat involved to extract them.
Many fibers come from the tropics or subtropics, so hardy plants that produce strong fibers are a hot item.