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Useful Tropical Plants

Viola diffusa

Ging.

Violaceae

+ Synonyms

Viola diffusoides Ching J.Wang

Viola kiusiana Makino

Viola tenuis Benth.

Viola wilsonii W.Becker

Common Name:

Viola diffusa
Viola diffusa somewhere in Taiwan. Basal rosette of leaves and an opened seed capsule
Photograph by: ?? ??
Creative Commons License
Viola diffusa Viola diffusa

General Information

Viola diffusa is an annual to perennial plant, branching from the base and producing procumbent stems that root at their ends to produce dense rosettes of leaves and flowers; the plant grows around 8cm tall[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
,
275
Title
Flora of Japan
Publication
 
Author
 
Website
http://www.foj.info
Publisher
 
Year
0
ISBN
 
Description
An on-line version of the flora - an excellent resource.
,
455
Title
Flore de Madagascar et des Comores
Publication
 
Author
Humbert H.
Website
http://www.biodiversitylibrary.org/
Publisher
Museum National D'Histoire Naturelle; Paris
Year
1946 - 1984
ISBN
 
Description
Written in French, an excellent flora of the area though it has not been completed. Available for download from the Internet.
].
The plant is harvested from the wild for local use as a food and a medicine.

Known Hazards

All members of this genus have more or less edible leaves and flower buds, though those species, like this one, that can have yellow flowers can cause diarrhoea if eaten in large quantities[
62
Title
A Field Guide to N. American Edible Wild Plants.
Publication
 
Author
Elias. T. and Dykeman. P.
Publisher
Van Nostrand Reinhold
Year
1982
ISBN
0442222009
Description
Very readable.
,
85
Title
Edible Native Plants of the Rocky Mountains.
Publication
 
Author
Harrington. H. D.
Publisher
University of New Mexico Press
Year
1967
ISBN
0-8623-0343-9
Description
A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
,
159
Title
Wild Food Plants of Indiana.
Publication
 
Author
McPherson. A. and S.
Publisher
Indiana University Press
Year
1977
ISBN
0-253-28925-4
Description
A nice pocket guide to this region of America.
].

Botanical References

58
Title
Flora of Japan. (English translation)
Publication
 
Author
Ohwi. G.
Publisher
Smithsonian Institution
Year
1965
ISBN
-
Description
The standard work. Brilliant, but not for the casual reader.
,
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
,
455
Title
Flore de Madagascar et des Comores
Publication
 
Author
Humbert H.
Website
http://www.biodiversitylibrary.org/
Publisher
Museum National D'Histoire Naturelle; Paris
Year
1946 - 1984
ISBN
 
Description
Written in French, an excellent flora of the area though it has not been completed. Available for download from the Internet.

Range

E. Asia - central and southern China, southern Japan, Nepal, Bhutan, India, Myanmar, Philippines, New Guinea

Habitat

Wasted slopes, stream edges, sparse forests and roadsides where they are damp and shady[
147
Title
A Barefoot Doctors Manual.
Publication
 
Author
?
Publisher
Running Press; Philadelphica.
Year
1977
ISBN
0-914294-92-X
Description
A very readable herbal from China, combining some modern methods with traditional chinese methods.
]. Mountain forests, forest margins, grassy slopes, stream valleys, rock crevices; at elevations below 2,000 metres[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].

Properties

Edibility Rating *  *
Medicinal Rating *  *
HabitAnnual
Height0.08 m
PollinatorsInsects
Cultivation StatusWild

Cultivation Details

Viola diffusa is found from the warm temperate regions of southern China to higher elevations in the tropics of southeast Asia, the Philippines and New Guinea[
455
Title
Flore de Madagascar et des Comores
Publication
 
Author
Humbert H.
Website
http://www.biodiversitylibrary.org/
Publisher
Museum National D'Histoire Naturelle; Paris
Year
1946 - 1984
ISBN
 
Description
Written in French, an excellent flora of the area though it has not been completed. Available for download from the Internet.
].
Prefers a cool moist well-drained humus-rich soil in partial or dappled shade and protection from scorching winds. Tolerates sandstone and limestone soils but becomes chlorotic if the pH is too high. Prefers a pH between 6 and 6.5[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
All members of this genus have more or less edible leaves and flower buds, though those species with yellow flowers can cause diarrhoea if eaten in large quantities[
62
Title
A Field Guide to N. American Edible Wild Plants.
Publication
 
Author
Elias. T. and Dykeman. P.
Publisher
Van Nostrand Reinhold
Year
1982
ISBN
0442222009
Description
Very readable.
,
85
Title
Edible Native Plants of the Rocky Mountains.
Publication
 
Author
Harrington. H. D.
Publisher
University of New Mexico Press
Year
1967
ISBN
0-8623-0343-9
Description
A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
,
159
Title
Wild Food Plants of Indiana.
Publication
 
Author
McPherson. A. and S.
Publisher
Indiana University Press
Year
1977
ISBN
0-253-28925-4
Description
A nice pocket guide to this region of America.
].

Edible Uses

Young leaves and flower buds - raw or cooked[
105
Title
Tanaka's Cyclopedia of Edible Plants of the World.
Publication
 
Author
Tanaka. T. & Nakao S.
Publisher
Keigaku Publishing; Tokyo
Year
1976
ISBN
-
Description
The most comprehensive list of edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.
]. When added to soup they thicken it in much the same way as okra[
85
Title
Edible Native Plants of the Rocky Mountains.
Publication
 
Author
Harrington. H. D.
Publisher
University of New Mexico Press
Year
1967
ISBN
0-8623-0343-9
Description
A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
,
159
Title
Wild Food Plants of Indiana.
Publication
 
Author
McPherson. A. and S.
Publisher
Indiana University Press
Year
1977
ISBN
0-253-28925-4
Description
A nice pocket guide to this region of America.
]. The flowers of this species are usually purplish or yellowish[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
] - some caution is advised if the plant has yellow flowers since these can cause diarrhoea if eaten in large quantities[
62
Title
A Field Guide to N. American Edible Wild Plants.
Publication
 
Author
Elias. T. and Dykeman. P.
Publisher
Van Nostrand Reinhold
Year
1982
ISBN
0442222009
Description
Very readable.
].

A tea can be made from the leaves[
85
Title
Edible Native Plants of the Rocky Mountains.
Publication
 
Author
Harrington. H. D.
Publisher
University of New Mexico Press
Year
1967
ISBN
0-8623-0343-9
Description
A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
].

Medicinal

The whole plant is blood tonic and depurative. It aids tissue regeneration[
147
Title
A Barefoot Doctors Manual.
Publication
 
Author
?
Publisher
Running Press; Philadelphica.
Year
1977
ISBN
0-914294-92-X
Description
A very readable herbal from China, combining some modern methods with traditional chinese methods.
]. It is used in the treatment of abscesses, aplastic anaemia, boils, cough, fever, gas, leukaemia, mastitis and mumps[
218
Title
Medicinal Plants of China
Publication
 
Author
Duke. J. A. and Ayensu. E. S.
Publisher
Reference Publications, Inc.
Year
1985
ISBN
0-917256-20-4
Description
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
].

Other Uses

None known

Propagation

Seed - best sown as soon as it is ripe in containers in a lightly shaded position, Prick out the seedlings into individual pots when they are large enough to handle and plant them out when large enough.
Division works at any time of the year, so long as the plants are kept moist. Small divisions are best potted up until established, larger divisions can be planted direct into their permanent positions.
Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2019-12-06. <tropical.theferns.info/viewtropical.php?id=Viola+diffusa>

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