Hoyt Arboretum, Portland, Oregon, USA
Hoyt Arboretum, Portland, Oregon, USA
Hoyt Arboretum, Portland, Oregon, USA
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Found
O: 20 names
Oemleria cerasiformis
• Rosaceae • Indian plum, osoberry
Olearia × haastii
• Asteraceae
Olearia × oleifolia 'Wakairiensis'
• Asteraceae
Olearia avicenniifolia
• Asteraceae
Olearia macrodonta
• Asteraceae
Olearia moschata
• Asteraceae
Olearia nummulariifolia
• Asteraceae • tree daisy
Olearia virgata var. lineata 'Dartonii'
• Asteraceae
Oplopanax horridus
• Araliaceae • devilsclub
Opuntia polycantha × 'Grey Ghost'
• Cactaceae
Osmanthus × burkwoodii
• Oleaceae
Osmanthus aff. armatus
• Oleaceae
Osmanthus heterophyllus 'Variegatus'
• Oleaceae
Osmorhiza chilensis
• Apiaceae • sweet cicely
Ostrya virginiana
• Betulaceae • American Hophornbeam
Oxalis oregana
• Oxalidaceae • redwood-sorrel
Oxalis suksdorfii
• Oxalidaceae • Suksdorf woodsorrel
Oxydendrum arboreum
• Ericaceae • sourwood, sorrel tree, lily-of-the-valley tree
Oxydendrum arboreum 'Chameleon'
• Ericaceae
Ozothamnus rosmarinifolius 'Silver Jubilee'
• Asteraceae