]> [author note: Herbarium and types: KASSEL (no longer extant except for some ferns and mosses); some specimens at LE, MW, WRSL] Botany Pfeiffer, Louis (Ludwig) Karl Georg Pfeiffer, Louis (Ludwig) Karl Georg L. K. G. Pfeiffer Pfeiff. Pfeiffer Ludwig Karl Georg Pfeiffer; Carl Georg Louis Pfeiffer 1805 1877