Bottlebrush buckeye (Aesculus parviflora)
Collected at Arnold Arboretum of Harvard University, 2012.

Golden rain tree (Koelreuteria paniculata)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Empress tree (Paulownia tomentosa)
Collected in Los Angeles, California, 2012.

Staghorn sumac (Rhus typhinia)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Common milkweed (Asclepias syriaca)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Asian hornbeam (Carpinus tschonoskii)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Chinese cork oak (Quercus variabilis)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2012.

Traveler’s joy (Clematis vitalba)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2012.

Lily magnolia (Magnolia liliiflora)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Big leaf magnolia (Magnolia macrophylla)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2016.

Umbrella magnolia (Magnolia tripetala)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2016.

Umbrella magnolia (Magnolia tripetala)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2016.

Clematis "Westerplatte"
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2012.

Chinese pearlbloom (Poliothyrsis sinensis)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Bee-bee tree (Tetradium daniellii)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2010.

Nussbaum's hickory (Carya x nussbaumeri)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Pitard’s camellia (Camellia pitardii)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Hop tree (Ptelea trifoliata)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Chinese trumpet vine (Campsis grandiflora)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Beaked stewartia (Stewartia rostrata)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Chinese sweetshrub (Calycanthus chinensis)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.

Love in a puff (Cardiospermum halicacabum)
Collected in Boston, Massachusetts, 2011.

Asian hornbeam (Carpinus tschonoskii)
Collected at Arnold Arboretum of Harvard University, Boston, Massachusetts, 2011.