Section		Serpentens (W.Becker) Ching J.Wang
Scientific Name	Type species	Viola utchinensis Koidzumi Okinawa Sumire Published in: Acta Phytotax. Geobot. 7:113 (1938)
	Variety
	Form
	Synonym
	Origin	utchinensis : of Okinawa
Common names
Stalk Form		A flower scape is extended from a stalk, and a flower blooms from each scape.
Habitat		It grows wild in the crevice between raised coral reef in coast. Rocks of the limestone of the coastline which direct rays shine by the time zone and becomes shade half a day in the evening.
Distribution	Japan domestic	Okinawa endemic species.
	Japan overseas
	Others	In fact, there is only one place that grows naturally.
Flower	Shape	Small or middle size (1.3-3cm). Oval heart shape.
	Color	Light purple to white.
	Spur	White. The central part is dented.
	Season	The flowering season is very long (February to April).
	Stigma	Rod-shaped.
	Aromatic
	Others
Leaf	Shape	Small size (2-4cm). Heart shape. Many leaves.
	Color	Both sides are dark green which is thick and is glossy.
	Others	Hairless on both sides.
Seed	Shape
	Color
	Others	The fruit is spherical. Myrmecochorous type.
Characteristics of roots
Endangered Information		Okinawa：ThreatenedⅠ【IB（EN）】
Type Specimen		Okinawa by T. Kanagusuku (Storing by Kyoto univ.).
Chromosome Number		2n=44
Reference Information
Others		A seed does not burst but falls at the root. Endangered species. Recent studies have recognized that "Viola okinawensis" and "V. utchinensis" belong to the same group. It is necessary to change the description in the near future.