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Gentianella diemensis

Common name:   Family: Gentianaceae
Author: (Griseb.)J.H.Willis. Botanical references: 154, 265
Synonyms: Gentiana diamensis
Known Hazards: None known
Range: Australia - New South Wales, South Australia, Tasmania, Victoria.
Habitat: Swamps[265], usually found at high elevations[154].
Edibility Rating (1-5): 0Medicinal Rating (1-5):1

Systematics:From a USDA Plants Database
Order: Gentianales. Gentian family

Physical Characteristics

Annual/Perennial growing to 0.3m. . 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 0/5 for edibility and 1/5 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

Cultivated Beds.

Edible Uses

None known

Medicinal Uses

Disclaimer

Bitter; Tonic.

The root is a bitter tonic[154]. It is taken internally as a tonic to the digestive system.

Other Uses

None known

Cultivation details

We have almost no information on this species and do not know if it will be hardy in Britain. The following notes are based on the general needs of the genus.
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].
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.

Suppliers

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

Web References

References for the family Gentianaceae.

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]).

[154] Ewart. A. J. Flora of Victoria.
A flora of eastern Australia, it is rather short on information that is useful to the plant project.

[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.

[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.

[265] Carolin. R. & Tindale. M. Flora of the Sydney Region Reed. Australia. 1993 ISBN 0730104001
Concise flora with little beyond an extensive key, species descriptions, very brief habitat description.


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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
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