Thysanotus tuberosus R.Br.

Species

Angiosperms > Asparagales > Asparagaceae > Thysanotus

Characteristics

Roots partly fibrous, bearing spindle-shaped distant tubers 10-25 mm long. Leaves 2-6, erect, linear to terete, 20-50 cm by up to c. 1 mm broad. Peduncle about as long as the leaves or up to 50% longer, usually with 1-6 branches; main axis and branches each terminating in a 2-6(-20)-flowered cluster; 1-3(-8) flowered fascicles of flowers usually also present in the axils of bracts along the main axis and branches. Bracts usually with scarious margins, the lowest 3-60(-80) mm long; the upper shorter. Pedicels 7-17 mm, articulation usually below the centre, erect to spreading. Outer perianth segments purple with a scarious pale margin, 7-14 by 2-3 mm; inner segments purple with inturning fringed margin, 7-15 by 2.5-5 mm. Filaments 1-2 mm, those of the outer whorl often shorter than the inner; anthers 2-4 mm long; outer often shorter than the inner. Ovary 1-1½ mm long; style (2-)3-5 mm. Capsule oblong, c. 5-6 mm long. Seeds up to 2 mm long.
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Rootstock small; roots tuberous; tubers cylindrical to ellipsoidal, c. 1–2 cm long, 3.5–5 cm from stock. Leaves annual, c. 5–15, linear, channelled below, ±terete towards apex, c. 20–60 cm long. Inflorescence paniculate, 20–60 cm long; umbels 1–8-flowered; pedicels 6–22 mm long, articulated ± medianly. Perianth segments 7–19 mm long. Sepals lanceolate, c. 2–2.5 mm wide, mucronate. Petals ovate, 5–7 mm wide; fimbriae c. 5 mm long. Stamens 6; anthers twisted, 3 outer 2.5–4.5 mm long, 3 inner 3–9 mm long. Style straight to curved, 4–9 mm long. Seeds ellipsoidal, 1.5–2 mm long, 1–1.5 mm wide; aril shortly stalked, yellow to yellow-orange.
An erect herb. It grows 40 cm high. The plant has a ring of narrow leaves. The leaves are 30-40 cm long and 2-3 mm wide. The leaf bases are a dark maroon colour. There is a ring of tubers under the ground. There can be 12 tubers. They are 2-3 cm long and 8-9 mm wide. They are up to 10 cm deep. The flowers are delicate and lilac-mauve. The 3 petals have fringes along the edge. The flowers are 2.5-3 cm across. They are on a central stem 40 cm high. The fruit is a capsule with 3 compartments that contain small black seeds.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Common grass associate in lowland savanna forest on poorly drained flats, subject to a distinct dry season. In Australia found in exposed localities up to 500 m. Fl. Dec.-April.
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Sandy soils in heaths and grassland in the montane zone. Dry sclerophyll forest, woodland and heath on a variety of soils.
In wooded and forested country dominated by eucalypts, in most soil types except very light, sandy soils.
A tropical plant. It grows in wet grasslands of tropical Queensland.
Sandy soils in heaths and grassland in the montane zone.
Light 7-9
Soil humidity 1-6
Soil texture 3-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 9-11

Usage

The tubers can be eaten raw or cooked. The leaves and flowers are cooked and eaten.
Uses animal food
Edible flowers leaves roots tubers
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from the tubers. They can probably also be grown from the seeds. The seeds are best grown in a greenhouse and transplanted once well established after 1 or 2 years.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Thysanotus tuberosus unspecified picture

Distribution

Thysanotus tuberosus world distribution map, present in American Samoa, Australia, and Papua New Guinea

Identifiers

LSID urn:lsid:ipni.org:names:542240-1
WFO ID wfo-0000748547
COL ID 7BZ92
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Chlamysporum tuberosum Thysanotus tuberosus

Lower taxons

Thysanotus tuberosus subsp. parviflorus Thysanotus tuberosus subsp. tuberosus