Section		Diffusae W. Becker
Scientific Name	Type species	Viola apoensis Elmer Published in: Leaflets Philipp. Bot. 8: 2878 (1915)
	Subspecies
	Variety
	Synonym	≡Viola diffusa subsp. apoensis (Elmer) D.M.Moore Published in: Fl. Males., Ser. 1, 7(1): 202 (1971)
	Origin	diffusa : Spread, diffused, apoensis : Mountain Name (Mt. Apo in Mindanao island)
Common names
Stalk Form		A flower scape is extended from a stalk, and a flower blooms from each scape.
Habitat		High altitude, cool mountainous region.
Distribution	Japan domestic
	Japan overseas	Distributed in the warm temperate to subtropical regions of East Asia and Southeast Asia, and grows wild in the mountains of the Philippines, Indonesia, and Papua New Guinea.
	Others	Mt. Apo (2,954m) on the small coral reef island of Mindanao in central Philippines, and Mt. Data on the island of Luzon.
Flower	Shape	Small flowers. Calyx and flower stalk have coarse hairs. Side petals are hairless.
	Color	The center of the corolla is white, the core is pale yellow, and the whole flower is pale purple.
	Spur	White, thick and short.
	Season	The flowering period is late.
	Stigma
	Aromatic	Fragrant.
	Others	The yellow-green flower stalks are covered with fine whitish hairs. The small lip petals have prominent purple stripes. Multiflora.
Leaf	Shape	Both the basal and stem leaves have unique round or spoon-shaped.
	Color	Both sides are bright green, with loose sawtooth and short, coarse hairs.
	Others
Seed	Shape
	Color
	Others
Characteristics of roots
Endangered Information
Type Specimen		Collected and published in 1915 by American botanist and plant collector Adolph Elmer (1870-1942).
Chromosome Number
Reference Information
Others		It spreads by stolons (runners). Reorganization of closely related groups is progressing, and there is a tendency for Viola apoensis to be integrated into a subclassification of Viola diffusa.