Originally developed in the 18th-century, vasculums were most especially used to collect plants and flowers (the size and shape of the vasculum is designed to allow an entire small plant to be carried, roots and all, without damage so that it can be transplanted to a pot or the gatherer's garden), but could be used for any specimens from the natural world such as animals (alive or dead), shells, rocks, etc
In its dim and shadowy outlines we may, if we will, discern in some measure those elements of wisdom which should guide the present and secure the welfare of the future." Frederick Douglass, 1889
Unless the couple has stated otherwise, the MOB should be prepared to cover the cost of her dress.
Jan believes the photo was taken in the back garden of their house
If you want to stand out in the crowd, consider plus size floral print dresses and keep accessories simple to focus the attention on the flowers