Section		Diffusae W. Becker
Scientific Name	Type species	Viola diffusa Gingius ex de Candolle : {Tsukusi Sumire (Original, Widely alive)} Published in: A. P. de Candolle 1: 298 (1824)
	Subspecies	Viola diffusa ssp. tenuis (Benth.) W. Becker : {Yama Tsukusi Sumire} Published in: Philipp. J. Sci. 19(6): 714-715. (1921)
	Variety	Viola diffusa var. glabella H. Boissier : {Tsukusi Sumire} Bull. Herb. Boiss., ser. 2, 1(11): 1077. (1901)
	Synonym	Viola tenuis Bentham
	Origin	diffusa : Spread, diffused, tenuis : thin.
Common names		【Chinese】心叶蔓茎堇菜,【Taiwanese】心叶茶匙黃、心葉茶匙黃
Stalk Form		A flower scape is extended from a stalk, and a flower blooms from each scape.
Habitat		It grows wild in ravine area.
Distribution	Japan domestic
	Japan overseas	Distributed from the Southeastern Asian subtropical zone to the subtropical zone from the East Asia.
	Others
Flower	Shape	Middle or small size.
	Color	The central part is white, the nucleus is pale yellow, and the periphery is pale pink. It has a darker color than Viola diffusa.
	Spur	White and short.
	Season	In the native field, it blooms from December to spring.
	Stigma	Inverted triangle shape.
	Aromatic
	Others	Fine hair stands out on the red flower stem. There is a purple stripe on the lip valve. The number of flowers is extremely large.
Leaf	Shape	Blade shape like a spoon.
	Color	Both sides are green.
	Others	White hair stands out on the surface. It spreads like a rosette toward the four sides. It stands up when fruit is ready.
Seed	Shape	Very small grains. Tearing drop shape (bulging oval).
	Color	Brown, black-brown.
	Others	The number of seeds per strain is extremely large.
Characteristics of roots
Endangered Information
Type Specimen
Chromosome Number		2n=74
Reference Information
Others		It is a warm regional violet, but also has some cold resistance