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Beach
morning glory
Ipomoea pes-caprae
Family Convolvulaceae
updated
Jan 13
Where seen? With fresh green leaves and bright purple flowers,
this creeper is sometimes seen growing wild on our sandy beaches,
at the highest water mark. This plant is found on tropical shores
everywhere including throughout Southeast Asia. It belongs to the
Family Convolvulaceae which includes the more commonly seen terrestrial
morning glory, as well as our favourite vegetable Kang kong (Ipomoea
reptans) and sweet potato or Keladi (Ipomoea batatas).
Features: A creeper that grows
on the sand, taking root at the nodes and having thick, deep tap roots.
The leaves rather thick and fleshy, in varying shapes and sizes (3-10cm),
according to Hsuang Keng from oval to quadrangular to rounded. They
may be deeply lobed or only notched at the end. Sometimes they form
two lobes that resembles a goat's or horse's hoof. The Malay name
of the plant 'Tapak Kuda' means 'horse's footprint', while
the scientific name 'pes-caprae' means 'goat's foot'.
Flowers large trumpet-shaped (3-5cm) thin delicate, usually pink,
reddish purple or violet, and usually darker at the base, rarely white.
Flowers open early in the morning and shrivel by the afternoon.
Fruit ripens to a small (about 1cm) globular, dry capsule which explodes
to release four black, densely hairy seeds. The seeds float and are
resistant to salt water, and dispersed by sea.
Role
in the habitat: According to Polunin, is the most important
coloniser of many tropical beaches around the world. Its creeping
rooting stems often form dense patches which hold down the sand and
produce humus.
Human uses: According to Wee, the juice squeezed from the
plant is used in Malaysia to treat fish stings. The leaves are used
in Indonesia to hasten the bursting of boils; sap from the young leaves
are boiled in coconut juice and used to treat sores and ulcers; and
the seeds chewed with areca nut, soothe abdominal pains and cramps.
In the Philippines, the boiled leaves are used to treat rheumatism.
While Polunin records its use as a purgative in Malay medicine. Burkill
includes the use of boiled tubers to relieve bladder problems as they
have a diuretic effect. According to Burkill, animals will eat the
leaves but they will taint the milk of cows. The leaves are also fed
to pigs.
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Pulau Semakau,
Jan 09
Pulau Semakau, Apr 09
Pulau Semakau,
Apr 09
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Lobed leaf
may resemble a hoof print.
Pulau Semakau, Jan 09
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Opened
fruit capsules.
Changi, Jan 10
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Fruit capsule.
Pulau Semakau, Jan 09
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Beach
morning glory on Singapore shores
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