PERFOLIATE • FREE-TRANSLATOR.COM • Definition of Perfoliate

... fully 11/2in. long. The inside of the corolla is striped with white and various shades of blue and purple. The leaves are 2in. long, oval, lance-shaped, distinctly ribbed, somewhat lobed at the base, and stem-clasping, which gives the pair of leaves a joined or perfoliate appearance; the nodes are short, or near together, the lower ones being the more distant, where also the leaves are much smaller; the foliage is a glossy dark green colour, the whole plant having ...

— Hardy Perennials and Old Fashioned Flowers - Describing the Most Desirable Plants, for Borders, - Rockeries, and Shrubberies. • John Wood