Rosa onoei var. onoei ("Yabuibara")

Japanese name: ヤブイバラ （薮茨）
Scientific name: Rosa onoei var. onoei

[Overview]
A deciduous shrub 1–2 m tall, distributed south of the Median Tectonic Line, found in relatively dim places such as slope forests and cliffs from the seaside to the mountains.
It sometimes hangs down from cliffs.
The stems branch freely, first growing upward and then spreading sideways in an arch, and the branches have thorns that curve gently like hooks.
The leaves are alternate and odd-pinnately compound, 3–5 cm long, with 5–7 leaflets.
The leaflets are ovate-lanceolate to lanceolate, 1.5–3 cm long, pointed at the tip, slightly glossy on the upper surface, with appressed hairs on the leaf axis and on the midrib of the underside.
The leaf margins have sharp serrations.
The terminal leaflet is larger than the lateral leaflets.
The stipules are attached to the petiole up to their upper part and have serrations whose tips are glandular.
A short panicle at the branch tip bears 1–10 white, 5-petaled flowers 1.5 cm across.
The inflorescence axis, flower stalk, hypanthium and sepals have appressed hairs and glandular hairs.
The sepals have 1–2 small lobes.
The fruit is nearly spherical, 0.5–0.6 cm across, and ripens red.

[Notes]
Small forms on serpentine ground in Shikoku were once distinguished as Inu-niioibara, and small forms on Yakushima as Yakushima-ibara.

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