Japanese name: カトウハコベ（加藤繁縷） Scientific name:Arenaria katoana var. katoana
[Overview]
A perennial 5–10 cm tall, found on rocky and gravelly ground in and around serpentine areas in the high mountains.
It grows in mats; the stems grow in clumps, with curled hairs and glandular hairs in two rows.
The leaves are simple and opposite, ovate to lanceolate, 0.3–0.9 cm long and 0.2–0.3 cm wide, thin, hairless on both sides, with entire margins.
There is no leaf stalk.
The flowers are borne singly at the stem tips or in the leaf axils, or 2–3 in a cyme.
The flowers are white, 5-petaled and about 0.8 cm across, and the petals are ovate, 0.5–0.6 cm long.
The sepals are long ovate with pointed tips and hairless.
The flower stalks are densely covered with short glandular hairs.
There are 10 stamens.
The fruit is an ovate capsule 0.5 cm long, with the tip splitting into 6.
[Notes]
The Japanese name was given in honor of Viscount Kato Yasuaki, who in 1905 (Meiji 38) climbed Mt. Hayachine with Makino Tomitaro and discovered this species.
