Apocynum cannabinum var. glabrescens

This is a striking plant that grows from a rhizome. It has an open, spreading habit. The leaves are quite widely spaced and are long and pointed with a cream midrib. They are opposite each other and sometimes appear to be perfoliate. (The base of the leaf clasps the stem.) It flowers in July when it produces small clusters of creamy flowers. These are followed by unusual fruits that form long slender forked pods. It is poisonous. There are medicinal properties associated with the heart and has been used by the native Americans. They also used the plant's fibres to weave textiles. The stems have been used to make rope. It is unsuited to domestic cultivation except in specialist gardens.