Details for: WLP 3420, Hydrangea bifida (Maxim.) Y. De Smet & C. Granados, HOKY23-09

20 September 2023.
Honshu, Japan
Locality: Yamanashi Prefecture: Itoshirogawa Valley.
Coordinates: 35.7343, 138.3324 (Map it)
Elevation: 1063m.
Georeference protocol: Lat/lon determined by GPS
Habitat: Wild Habitat
Environment description: Damp cliff face below minor waterfall, protected from deer browsing. Growing in half- to three-quarters shade. Soil: Rocky, gravelly with fair amount of organic matter. Slope: 60°. Aspect: Northwest. Elevation: 3488 feet.
Number of plants sampled: 10
Associated species: Elatostema umbellatum; Euptelea polyandra; Cercidiphyllum japonicum; Hydrangea involucrata; Carpinus cordata; Acer capillipes; Acer diabolicum; Acer nipponicum.
Comment: Small shrub, very herbaceous-y looking, reaching for light away from rocks. Height 30 to 50 cm; Spread to 50 cm. Stems green and hairy. Leaves typical for the species; coarse, large with bifid apices, prominent hairs on both ab- and adaxial sides, lots of herbivory. Ovoid, green to brown capsules, ca 1 cm; usually 5-7 borne upon open infructescences; old calyces often present. Seed collected from more than 10 plants. Japanese name refers to a silver drinking cup.
Collector(s):

• Aizawa, Mineaki, Utsunomiya University
• Dosmann, Michael S., The Arnold Arboretum
• Hata, Yoshinari, Utsunomiya University
• Schwartz Sax, Miles, Arnold Arboretum of Harvard University

12 January 2024.
Massachusetts, United States

Donor(s):

• Arnold Arboretum of Harvard University