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Aponogeton lakhonensis A.Camus

Species

Angiosperms > Alismatales > Aponogetonaceae > Aponogeton

Characteristics

Tuber elongate or obovoid, up to 2 cm ø. Submerged leaves very variable in shape and size, narrowly oval to linear, up to 25 by 6 cm (e.g. 25 by 6 cm, 15 by 0.9 cm); base (very) narrowly cuneate, apex narrowly cuneate with a blunt tip or rounded; main nerves 7 or 9; petiole 7-35 cm. Floating leaves (not seen in Mal.) up to 17 by 4 cm, base cordate or (seldom) rounded; apex cuneate with a blunt tip or rounded; main nerves 7 or 9. Peduncle only slightly thickening towards the inflorescence. Spathe c. 17mm, caducous, rarely persistent. Spike up to 8 cm, rather laxly, sometimes densely flowered. Tepals 2, obovate, 1-2 by ¾-1½ mm, yellow, 1-nerved. Stamens 6, 1½-3 mm, filaments widened towards the base. Ovaries 3-4(-5), 1-1¾ by ¾-1 mm; ovules 4-8. Infructescence up to 17 cm. Fruits up to 3 by 2 mm, with a terminal or lateral beak. Seeds 2-3 by 1 mm; testa double; embryo 1¼-2½ by ½ mm; plumule absent.
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Rhizome obovoid or elongated, to 2 cm, often with filament remnant of sheath. Petiole 9-15 cm in submerged leaves and 40-60 cm in floating leaves; leaf blade narrowly ovate to linear, 4-6 × 1-2 cm, herbaceous, with 7-9 primary veins at base, base cordate or rounded, margin entire, apex rounded or with a blunt tip. Inflorescence to ca. 5 cm, pedunculate. Flowers bisexual. Perianth segments 2, yellow, slightly obovate, ca. 2 mm. Stamens 6; filaments broadened toward base. Carpels slightly united near base, with 4-6 ovules per carpel. Fruit ovoid, 2-3 mm, with a short terminal beak. Fl. Apr-Oct.
A herb which grow in water. The rhizome is long and can be 2 cm across. The leaves vary in shape and size. The leaves under the water can be 25 cm long by 6 cm wide but the floating leaves are smaller.
Life form perennial
Growth form herb
Growth support aquatic
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.02
Root system rhizome
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Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Slow running streams, flooded rice fields and ponds, in Celebes in a stream in limestone country, not frequent but rather abundant locally, 200-800 m. Fl. March, May, Sept. and Oct.
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A tropical plant. It grows in streams and flooded rice fields. They grow in stagnant and running shallow water.
Light -
Soil humidity -
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Soil acidity -
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Hardiness (USDA) 8-12

Usage

The leaves are eaten raw with fish sauces. The starchy tuberous rhizomes are eaten during famine.
Uses -
Edible leaves roots
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
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Images

Aponogeton lakhonensis unspecified picture

Distribution

Aponogeton lakhonensis world distribution map, present in China, India, Cambodia, Lao People's Democratic Republic, Myanmar, Thailand, Taiwan, Province of China, and Viet Nam

Conservation status

Aponogeton lakhonensis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:82954-1
WFO ID wfo-0000760971
COL ID 5VP9Q
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Aponogeton lakhonensis Aponogeton pygmaeus Aponogeton taiwanensis Aponogeton luteus
WorldFloraDB 2024