Rose, Altai - Rosa spinosissima var. altaica
Rose, Hybrid - Rosa hybrids
Rose, Low Prairie - Rosa arkansana - also Sunshine Rose
Rose, Persian Yellow - Rosa foetida cv Persiana
Rose, Rugosa - Rosa rugosa
Rose, Smooth - Rosa blanda
Russian-olive - Elaeagnus angustifolia
Saskatoon - Amelanchier alnifolia - also Juneberry or Serviceberry
Seabuckthorn, Common - Hippophae rhamnoides
Snowberry, Common - Symphoricarpos albus - also White Snowberry
Snowberry, Western - Symphoricarpos occidentalis
Spirea, Dwarf Pink  - Spiraea x bumalda
Spirea, Japanese - Spiraea japonica
Spirea, Korean - Spiraea trichocarpa 
Spirea, Nippon - Spiraea nipponica
Spirea, Threelobe - Spiraea trilobata
Spruce, Black - Picea mariana
Spruce, Colorado - Picea pungens
Spruce, Dwarf Serbian - Picea omorika cv Nana
Spruce, Norway - Picea abies
Spruce, White - Picea glauca
Sumac, Smooth - Rhus glabra
Sumac, Staghorn - Rhus typhina


