Viola arvensis "Violet Chamber of Flower Photo Gallery" (Internet Guide)

Section		Melanium Ging.
Scientific Name	Type species	Viola arvensis Murray Published in: Prodr. stirp. gott. 73 (1770)
	Subsp.	Viola arvensis subsp. andina W.Becker Viola tricolor subsp. megalantha Nauenb.
	Form
	Synonym	Viola tricolor L. var. arvensis (Murr.) DC. Viola tricolor L. var. arvensis (Murr.) Boiss. Viola tricolor L. ssp. arvensis (Murr.) Gaudin Viola banatica Kit. ex Roem. et Schult. Viola nana (DC.) Godr. Viola ruralis Jord. ex Boreau Viola segetalis Jord.
	Origin	arvensis : bloom in the field
Common names		【English】European field pansy、Field violet、Heart's Ease,【Chinese, Taiwanese】野生堇菜【Spanish】Violeta, Pensamiento
Stalk Form		A flower scape is extended from a stalk, and a flower blooms from each scape.
Habitat		Grows on neutral or calcareous soils. It grows in ordinary farmlands such as grasslands and roadsides. Adapt from coast to alpine.
Distribution	Japan domestic	Escape strains are becoming wild.
	Japan overseas	Europe, North Africa, Russia, west Asia, Oceania, South America, North America (also Greenland).
	Others	Invasive alien species.
Flower	Shape	It is extremely small size. A labial palp is big and gives a slim image lengthwise. There is hair for a side dialect. A flower stalk tends to be remarkably long.
	Color	The whole is pale yellow (creamy-white) and the center is yellow (cream). Some of the calyx has a dark color. The center of the lip is often dark yellow and the others are often pale in shade, which is typical. On overseas sites such as Russia, some individuals with strong side-speaking are seen. Similarly, some individuals have a light purple upper valve, and some have striking purple stripes.
	Spur	Thin rod shape. It has a purple color.
	Season	The flowering season is late, blooming until early fall.
	Stigma	Inverted triangle.
	Aromatic	There is a report that the scent is good (unconfirmed in planted products).
	Others	The sepals are longer than the petals. Flower stems tend to be significantly longer.
Leaf	Shape	It has the saw blade which the long and slender spoon leaf about 10mm wide and the tip sharpened, and sharpened coarsely. The lower leaf is oval.
	Color	Both surfaces are dark green.
	Others	Characterized by large leaves that are as large as the leaf blades. The base is deeply split into combs.
Seed	Shape	Small size.
	Color	Light shiny brown.
	Others	The fruit is round. Largely autogamous.
Characteristics of roots		Straight and white.
Endangered Information
Type Specimen		Switzerland.
Chromosome Number		2n=34
Reference Information
Others		It is considered to be the one of the progenitors of the pansy with Viola tricolor and Viola lutea. It is almost treated with a weed. cf. Field pansy、Heart's Ease. Plant height is about 10 to 30 cm.