American botanist.
Wesley Martin Knapp is the Chief Botanist for NatureServe. Originally from New Hampshire, Knapp is an expert in North American plants belonging to the Cyperaceae (sedges) and Juncaceae (rushes). Knapp has published research in journals including: Systematic Botany, the Botanical Research Institute of Texas [4], Evansia, and Opuscula Philolicheum.