Hylotelephium viride ("Aobenkei")

Japanese name: アオベンケイ （青弁慶）
Scientific name: Hylotelephium viride

[Overview]
An evergreen perennial growing on trees and rocky ground.
It has a rhizome.
The leaves are simple and opposite, ovate, 3–6 cm long and 1.5–4 cm wide, with no teeth on the margin, or if present, wavy teeth.
The petiole is 1–2 cm long.
A spherical corymb-like inflorescence at the tip of a flower stalk 20–50 cm long bears densely packed flowers.
The flowers are small, pale yellowish green and 5-petaled; the petals are 4.5 mm long.
There are 10 stamens, about as long as the petals.
The anthers are pale brown.

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