is a biological genus in the family Rosaceae (Roses) and order Rosales.
Horkelia wilderae
Horkelia bolanderi
Horkelia californica
Horkelia daucifolia
Horkelia clevelandii
Horkelia hendersonii
Horkelia tularensis
Horkelia parryi
Horkelia fusca
Horkelia marinensis
Horkelia truncata
Horkelia rydbergii
Horkelia yadonii
Horkelia tenuiloba
Horkelia congesta
Horkelia sericata
Horkelia tridentata
Horkelia cuneata
Horkelia hispidula
Agrimonia
Fallugia
Malus
Geum
Waldsteinia
Coleogyne
Rubus
Sanguisorba
Lyonothamnus
Adenostoma
Aronia
Photinia
Prunus
Potentilla
Purshia
Chamaebatiaria
Horkeliella
Malacomeles
Sorbaria
Spiraeanthus
Pyracantha
Chaenomeles
Crataegus
Alchemilla
Chamaerhodos
Eriobotrya
Chamaebatia
Sorbus
Dryas
Cercocarpus
Ivesia
Physocarpus
Holodiscus
Aphanes
Pyrus
Exochorda
Filipendula
Petrophytum
Vauquelinia
Amelanchier
Dasiphora
Neviusia
Fragaria
Heteromeles
Rosa