Monograph of Northern Mexican Crataegus (Rosaceae, Subfam. Maloideae)

abaxial adaxial surface ANSM anthers anthesis aurescens BRIT calyx lobes Cañon Cerro Potosí cm diam cm long Coah Coahuila coahuilensis components responsible Crataegus Crataegus greggiana Crataegus tracyi Crus-galli cuprina dendrogram Eduardo Estrada Explanation as Fig flowering foliage Fructus fruiting branch Galeana glabrous glandular-serrate gracilior greggiana greggiana HOLOTYPE hypanthium inflorescence ISOTYPES J.B. Phipps Jame Canyon johnstonii leaf shape Leaves deciduous Linares lobi calycis marginibus margins Martínez Mexican Crataegus mexicana MEXU Mpio Mueller Nuevo León FL OTUs P.G. Smith PCA scattergram pedicels pepo petioles pubescens pubescent pyrenes randomization tests Representative specimens rosei rosei Phipps rosei ssp rosei subsp San Luis Potosí scattergram serrate serratissima Sierra Madre Oriental Smith UWO species stamens styles sulfurea surface from Phipps Tamaulipas taxa taxon tejocote thorns tomentose total variation uniflora UPGMA UPGMA dendrogram UWO Coahuila UWO Hidalgo UWO Nuevo León veins Zimapán