Common Name:

General Information

Derris philippinensis is an evergreen, climbing shrub with twining stems that can scramble over the ground or climb into nearby vegetation for support.
The plant is harvested from the wild for local use of the root, which is a source of the insecticide rotenone.

Known Hazards

The plant contains rotenone and has been used traditionally as a fish poison[] - the rotenone kills or stuns the fish making them easy to catch, but the fish remain perfectly edible for mammals. Rotenone is classified by the World Health Organization as moderately hazardous. It is mildly toxic to humans and other mammals, but extremely toxic to many insects (hence its use as an insecticide) and aquatic life, including fish. This higher toxicity in fish and insects is because the lipophilic rotenone is easily taken up through the gills or trachea, but not as easily through the skin or the gastrointestinal tract. The lowest lethal dose for a child is 143 mg/kg, but human deaths from rotenone poisoning are rare because its irritating action causes vomiting. Deliberate ingestion of rotenone, however, can be fatal.
The compound decomposes when exposed to sunlight and usually has an activity of six days in the environment.

Botanical References

Range

Southeast Asia - Philippines

Habitat

Thickets and forests; at elevations up to 1,400 metres[].

Properties

Other Uses Rating
Habit	Evergreen Climber
Height	0.00 m
Cultivation Status	Wild

Cultivation Details

Derris species generally grow best in tropical areas with a well-distributed rainfall pattern[].
All species in this genus tolerate a wide range of soil conditions, from fertile loams to barren areas, though a well-drained soil is preferrable[].
This species has a symbiotic relationship with certain soil bacteria; these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[].

Edible Uses

None known

Medicinal

None known

Other Uses

The roots are a source of rotenone, which is widely used as an insecticide[, ]. Rotenone is effective against a range of horticultural pests, such as aphids and caterpillars, and also against external body parasites like ticks, lice, fleas and flies. It is reported to be ineffective against bedbugs, cockroaches, scale insects and red spiders.[, , ]. This species does not produce enough rotenone to make it worthwhile for commercial production.

Propagation

Seed -

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