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Gentiana macrophylla

Common name:	Qin Jiao	Family:	Gentianaceae
Author:	Pall.	Botanical references:	74, 266
Synonyms:
Known Hazards:	None known
Range:	E. Asia - China, Siberia.
Habitat:	Steppes and glades in light woods[74]. Stream and river banks, roadsides, grassland slopes, wet meadows, forest margins, forests at elevations of 400 - 2400 metres[266]..
Edibility Rating (1-5):	1	Medicinal Rating (1-5):	3

Epithets:	From a Dictionary of Botanical Epithets
	macrophylla = large leaved;
Systematics:	From a USDA Plants Database
	Order: Gentianales. Gentian family
Other Range Info:	From the Ethnobotany Database
	China

Physical Characteristics

Perennial growing to 0.6m by 0.6m . It is hardy to zone 6. It is in flower from August to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bumblebees and butterflies. We rate it 1/5 for edibility and 3/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.

Habitats and Possible Locations

Woodland, Cultivated Beds, Sunny Edge.

Edible Uses

Leaves.

Leaves - cooked[177]. An emergency food, used when all else fails.

Medicinal Uses

Disclaimer

Analgesic; Antiinflammatory; Antipyretic; Antirheumatic; Hypotensive.

Qin Jiao has been used in Chinese herbalism for over 2,000 years and, like other members of this genus, the roots contain some of the most bitter compounds known and make an excellent tonic for the whole digestive system, working especially on the stomach, liver and gall bladder[238, 254].
The root is analgesic, anti-inflammatory, antipyretic, antirheumatic, diuretic, febrifuge, hypoglycaemic and hypotensive[176, 218, 238]. The root is used internally in the treatment of digestive problems, arthritis, allergic inflammations, low-grade fever in chronic diseases, jaundice and hepatitis[176, 218, 238, 254]. The root is harvested in the autumn and dried for later use.

Other Uses

None known

Cultivation details

In general, gentians require a moist well-drained soil in a sheltered position, a certain minimum of atmospheric humidity, high light intensity but a site where temperatures are not too high[239]. They are therefore more difficult to grow in areas with hot summers and in such a region they appreciate some protection from the strongest sunlight[200, 239]. Most species will grow well in the rock garden[200]. This species requires a moist well-drained neutral to acid soil in a sheltered position[200, 238]. It prefers full sun but succeeds in partial shade[111].
Plants are hardy to at least -15°c[238].
A moisture loving plant, preferring to grow with full exposure to the sun but with plenty of underground moisture in the summer, it grows better in the north and west of Britain[1].
Plants are intolerant of root disturbance[200].

Propagation

Seed - best sown as soon as it is ripe in a light position in a cold frame[200]. It can also be sown in late winter or early spring but the seed germinates best if given a period of cold stratification and quickly loses viability when stored, with older seed germinating slowly and erratically[200, 239]. It is advantageous to keep the seed at about 10°c for a few days after sowing, to enable the seed to imbibe moisture[239]. Following this with a period of at least 5 - 6 weeks with temperatures falling to between 0 and -5°c will usually produce reasonable germination[239]. It is best to use clay pots, since plastic ones do not drain so freely and the moister conditions encourage the growth of moss, which will prevent germination of the seed[239]. The seed should be surface-sown, or only covered with a very light dressing of compost. The seed requires dark for germination, so the pots should be covered with something like newspaper or be kept in the dark[239]. Pot up the seedlings into individual pots as soon as they are large enough to handle and grow on in light shade in the greenhouse for at least their first winter. The seedlings grow on very slowly, taking 2 - 7 years to reach flowering size[239]. When the plants are of sufficient size, place them out into their permanent positions in late spring or early summer.
Division in March[111]. Most members of this genus have either a single tap-root, or a compact root system united in a single root head, and are thus unsuitable for division[239].
Cuttings of basal shoots in late spring[238].

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

[E] Ethnobotany Data (common names, uses, countries) from the Ethnobotany Database.
[W] Photos (common names, range) from the University of Washington Medicinal Herb Garden.
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for the family Gentianaceae.

[CHINA] Data Very detailed botanical/identification info. from the Flora of China.

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[74] Komarov. V. L. Flora of the USSR. Israel Program for Scientific Translation 1968
An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers.

[111] Sanders. T. W. Popular Hardy Perennials. Collingridge 1926
A fairly wide range of perennial plants that can be grown in Britain and how to grow them.

[176] Yeung. Him-Che. Handbook of Chinese Herbs and Formulas. Institute of Chinese Medicine, Los Angeles 1985
A very good Chinese herbal.

[177] Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books 1984 ISBN 3874292169
An excellent book for the dedicated. A comprehensive listing of latin names with a brief list of edible parts.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[218] Duke. J. A. and Ayensu. E. S. Medicinal Plants of China Reference Publications, Inc. 1985 ISBN 0-917256-20-4
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.

[238] Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.

[239] Kohlein. F. Gentians. Christopher Helm. London. 1991 ISBN 0-88192-192-0
A nice readable book, giving details of habitats and cultural needs of all the members of this genus, with brief notes on other members of the family.

[254] Chevallier. A. The Encyclopedia of Medicinal Plants Dorling Kindersley. London 1996 ISBN 9-780751-303148
An excellent guide to over 500 of the more well known medicinal herbs from around the world.

[266] Flora of China 1994
On-line version of the Flora - an excellent resource giving basic info on habitat and some uses.

Readers Comments

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
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We make no claims of magical effects or supernatural powers for any item in this catalog. In spite of legendary attributes or occult and craft tradition, such items are offered as curios only and beliefs concerning their magical effectiveness are related only for historical interest.