Persicaria odorata Persicaria odorata Persicaria odorata, known as rau răm or Vietnamese coriander, is an herb whose leaves are used in Southeast Asian cooking. Other names for this herb include Vietnamese mint, Vietnamese cilantro, Cambodian mint, hot mint, laksa leaf, and praew leaf. Vietnamese coriander is not related to the mints, nor is it in the mint family Lamiaceae, but its general appearance and fragrance are reminiscent of them. "Persicaria" is in the family Polygonaceae, collectively known as "smartweeds" or "pinkweeds". Above all, the leaf is identified with Vietnamese cuisine, where it is commonly eaten fresh in salads (including chicken salad) and
Glossary of leaf morphology are an easy characteristic to observe. Edge and margin are interchangeable in the sense that they both refer to the outside perimeter of a leaf. Leaves may also be folded or rolled in various ways. The folding of leaves within a bud is vernation, ptyxis is the folding of an individual leaf in a bud. The Latin word for 'leaf', , is neuter. In descriptions of a single leaf, the neuter singular ending of the adjective is used, e.g. 'lanceolate leaf', 'linear leaf'. In descriptions of multiple leaves, the neuter plural is used, e.g. 'linear leaves'. Descriptions commonly refer to