"A genus of order Piperaceae. The Piper nigrum, which furnishes the black pepper of commerse, is a native…
"It is said to be ovate when it has the outline of the longitudinal section of an egg."—Darby,…
This illustration shows leaves derived from the oval type: 13. Ovate and Serrate; 14. Palmately three…
This illustration shows 4 types of simple leaves: 1. Linear (an elongated version of the elliptical);…