Seeds of South Australia
Dianella tarda (Liliaceae)
Late-flowered Flax-lily
List of species for Dianella
Click on an image to enlarge it
Seed collecting:
December to March
Herbarium region:
South Eastern
NRM region:
South East
IBRA region
Wimmera (MDD05)Murray Darling Depression
 Endangered   (IUCN: EN D)   [eastern states spp; questionable]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Dianella]
Name derivation:
Dianella is a diminutive of Diana, the virginal Roman goddess of hunting and the moon. The original species was found located in the French woods, thus the hunting association. Tarda from the Latin 'tardus' meaning late, referring to its later flowering period, from mid-afternoon to evening.
Distribution:
Found in the upper Southeast in South Australia, with very few collections, growing on roadside vegetation in Allocasuarina luehmannii open grassy woodland on heavy soils. Also found in New South Wales and Victoria.
Status:
Native. Very rare in South Australia. Rare in the other states.
Plant description:
Slender to robust tufted plants forming clumps to 20 cm across. Leaves not or hardly sheathing at base, more or less erect, to 150 cm long and 15 mm wide, strongly V-shaped in section, green to slightly glaucous. Inflorescence distinctly exceeding foliage with erect stems to 2 m high, with pale blue flowers, perianth segments slightly to strongly recurved, stamens to 9 mm long with filament rich yellow, shorter than the pale yellow anthers. Flowers between November and January. This species is distinguished from Dianella longifolia var. grandis and D. porracea by its (usually) tall inflorescence with flowers reportedly opening from early afternoon to late evening, later than the other which collapses by mid-afternoon, and narrow, strongly channelled leaves.
Fruit type:
Round pale blue or sometimes nearly white berries to 10 mm long containing numerous seeds.
Seed type:
Shiny black ovoid seeds.
Embryo type:
Linear fully developed.
Seed collecting:
Pick the fruits that are soft and purple. These will have hard black seeds inside.
Seed cleaning:
It is best to clean the fruit when it is fresh. Place fruits in a bucket of water and rub the fruit gently by hand to dislodge the seeds. Then use a sieve to separate unwanted material. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.
Seed viability:
From one collection, the seed viability was low, at 10%.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA680 (3.51 g)1214-Dec-2007DJD1033
South Eastern
19-Sep-200810%-18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.