Dianella (plant)

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Dianella
Dianella (species unknown)
Scientific classification e
Kingdom: Plantae
clade: Angiosperms
clade: Monocots
Order: Asparagales
Family: Xanthorrhoeaceae
Subfamily: Hemerocallidoideae
Genus: Dianella
Lamarck ex. A.L. Jussieu
Type species
Dianella ensata
( Thunberg) R.J.F. Henderson
Species

See text.

Dianella is a monocot genus of flowering plants.[1] They are commonly called flax lilies.

In the APG II system of plant classification, Dianella was placed in the family Hemerocallidaceae. When that system was replaced by APG III in 2009, Hemerocallidaceae was combined with two other families to form a larger version of Xanthorrhoeaceae.[2]

Dianella ranges from Japan to India, thence south to Australia and New Zealand; also occurring on many Pacific Islands. About half of the species are native to Australia.[3] Several species are grown for their attractive foliage and shiny, blue to purple berries.[4] Estimates of the number of species range from 20[1] to more than 30.[5] The type species for the genus is Dianella ensata.[6]

Dianella is not well understood taxonomically and is in much need of revision. It is closely related to Thelionema and Herpolirion.[7] Not all taxonomists recognize the genus. In one paper on the classification of Xanthorrhoeaceae, Dianella and six other genera were subsumed in the genus Phormium.

Features:

  • Long strappy leaves up to 1 m long
    • Range in colour from deep green, blue-green to pale green
  • Underground rhizome
  • Blue flowers in spring
    • 3-petals & 3-sepals (or 6-petals to the casual observer)
    • Prominent yellow stamens
    • Borne in sprays on a stem, for most species above the leaves
  • Shiny blue to purple berries
    • 5mm - 15mm diameter
    • Spherical to elongated
    • Spongy pulp
    • Shiny black seeds

Their habitat ranges from moist forests, dry woodland rainforests and coastal dunes.[8]

Contents

[edit] Australian Species (incomplete)

[edit] New Zealand Species (incomplete)

[edit] Cultivation

  • Frost hardy
  • Full sun or part shade
  • Propagate by division of rhizome

[edit] Uses

Landscaping - some species have dense attractive foliage and eye-catching displays of long-lasting bright blue berries.

Reports of the edibility of the fruit range from very poisonous [11][12] (species not specified) to sweet and nutty [13] (D. caerulea) while another source [9] lists the beach flax lily (D. congesta) as being the best tasting.

The leaves were used to weave dillies and baskets by Australian aboriginals.[9]

[edit] References

  1. ^ a b H. Trevor Clifford, Rodney J.F. Henderson, and John G. Conran. 1998. "Hemerocallidaceae" pages 245-253. In: Klaus Kubitzki (editor). 1998. The Families and Genera of Vascular Plants volume III. Springer-Verlag: Berlin;Heidelberg, Germany. ISBN 978-3-540-64060-8
  2. ^ Mark W. Chase, James L. Reveal, and Michael F. Fay. "A subfamilial classification for the expanded asparagalean families Amaryllidaceae, Asparagaceae and Xanthorrhoeaceae". Botanical Journal of the Linnean Society 161(2):132–136.
  3. ^ Starting out with Natives, John Wriggley & Murray Fagg
  4. ^ Anthony Huxley, Mark Griffiths, and Margot Levy (1992). The New Royal Horticultural Society Dictionary of Gardening. The Macmillan Press,Limited: London. The Stockton Press: New York. ISBN 978-0-333-47494-5 (set).
  5. ^ Warren L. Wagner, Derral R. Herbst, and Sy H. Sohmer. Manual of the Flowering Plants of Hawaii, Revised Edition, 1999. Bishop Museum Press: Hololulu
  6. ^ Dianella In: Index Nominum Genericorum. In: Regnum Vegetabile (see External links below).
  7. ^ Dion S. Devey, Ilia Leitch, Paula J. Rudall, J. Chris Pires, Yohan Pillon, and Mark W. Chase. "Systematics of Xanthorrhoeaceae sensu lato, with an emphasis on Bulbine". Aliso 22(Monocots: Comparative Biology and Evolution):345-351. ISSN 0065-6275.
  8. ^ What wild flower is that? Alec M Blombery
  9. ^ a b c d e f g h Wild food plants of Australia, Tim Low
  10. ^ "Dianella brevicaulis". FloraBase. Department of Environment and Conservation, Government of Western Australia. http://florabase.dec.wa.gov.au/browse/profile/16326. 
  11. ^ http://www.dpi.nsw.gov.au/__data/assets/pdf_file/0008/112796/garden-plants-poisonous-to-people.pdf, page 8
  12. ^ http://www.alpaca.asn.au/docs/about/husbandry/poison_plants.pdf
  13. ^ http://www.rbgsyd.nsw.gov.au/plant_info/aboriginal_bush_foods

Australian plants online

[edit] External links

References At: NMNH Department of Botany

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