Magnolia rzedowskiana (Magnoliaceae), una especie nueva de la sección Macrophylla de la parte central de la sierra Madre Oriental, México

摘要: Magnolia rzedowskiana A. Vazquez, R. Dominguez & Pedraza is described as a new species of the sect. Macrophylla. It found in Sierra Gorda, Queretaro, de Xilitla, San Luis Potosi, and vicinity Chapulhuacan, Hidalgo, Mexico, cloud forests. shares with other members Macrophylla its deciduous abaxially glaucous leaves. similar to dealbata having size trees leaves, but differs from latter narrower petals, less numerous stamens, styles flattened, acute at apex white yellowish dark maroon (vs. cylindrical truncate rounded creamy white), smaller fruits, carpels, carpels shorter beak.