biology

Piscidia piscipula

Piscidia piscipula is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Piscidia piscipula rather than just read about it. In short: Piscidia piscipula, commonly named Florida fishpoison tree, Jamaican dogwood, or fishfuddle, is a medium-sized, deciduous, tropical tree in the Fabaceae family. It is native to the Greater Antilles (except Puerto Rico), extreme southern Florida (primarily the Florida Keys) and the Bahamas, and the coastal region from Panama northward to the vicinity of Ocampo, Tamaulipas, Mexico.

Key takeaways

Piscidia piscipula belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Piscidia piscipula to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Piscidia piscipula from memory before moving on to harder problems.

Reference excerpt

Piscidia piscipula, commonly named Florida fishpoison tree, Jamaican dogwood, or fishfuddle, is a medium-sized, deciduous, tropical tree in the Fabaceae family. It is native to the Greater Antilles (except Puerto Rico), extreme southern Florida (primarily the Florida Keys) and the Bahamas, and the coastal region from Panama northward to the vicinity of Ocampo, Tamaulipas, Mexico. The native Taino of the West Indies discovered that extracts from the tree could sedate fish, allowing them to be caught by hand. This practice led to the tree's common names—fishpoison and fishfuddle. The tree has medicinal value as an analgesic and sedative. The generic name is Latin for "fish killer", and the specific epithet is Latin for "little fish".

Habitat The Florida fishpoison tree grows in coastal zones. It prefers well-drained, sandy soils, with a top layer of humus. The tree has some tolerance to short-term storm surges of brackish water or seawater. Although it grows in coastal conditions, the tree is usually protected from direct salt spray by adjoining vegetation. Established trees are highly tolerant of drought. Its sensitivity to the cold limits Florida fishpoison tree to areas no colder than plant hardiness zone 11.

Description The Florida fishpoison tree attains medium size with heights of 12 to 15 m and bole diameters of 46 to 118 cm. An irregular, open crown develops with stout, erect branches. Its deciduous leaves (9 to 23 cm long) are alternate and pinnately compound. Five to 11 leaflets (each 4 to 8 cm long) are present in an opposite arrangement. Leaflets are dark green above and distinctly paler grayish-green below with pubescence. Its white flowers are tinged with red or pink. They appear in pea-like clusters in May and are attractive to bees. Trees potentially bloom when about 4 m tall and 4 years old. Flowers develop into a light brown, bean-like pod (8 to 10 cm long) with four papery wings. Ripening in July and August, the pods contain red-brown, beanlike seeds. Stem bark is thin and olive gray in color with irregular dark patches and many smaller scales. The bark has an unpleasant odor and a distinctly acrid and bitter taste, causing a burning sensation in the mouth. After removal from the ripe pod, seeds germinate in 8 to 10 days when sown about 6 mm deep in moist soil. Until seedlings become well established, they should be fertilized and watered. Cuttings placed in moist soil quickly sprout roots. In fact, rooting has been observed to occur so readily, posts made from fresh timber occasionally will take root unintentionally.

Ecology The Florida fishpoison tree is a larval host plant for several butterfly species, including: the native cassius blue butterfly (Leptotes cassius), hammock skipper (Polygonus leo) and the introduced fulvous hairstreak (Electrostrymon angelia).

Uses

Cultivation In areas with a suitable climate and soils, Florida fishpoison tree makes a hardy, medium-sized shade tree with attractive seasonal flowers. It is ideal for yards and along fence rows. The species is shade intolerant, requiring full sunlight for maximum development.

Lumber The yellow-brown wood of fishpoison tree is resistant to decay, making its timber suitable for outdoor usage, such as boat building, fence posts, and poles. The dense, tight-grained wood is also used as a fuel, to make charcoal, and as a good carving material.

Fishing Indigenous peoples all over the world used local poisonous plants to aid in catching fish, and because of this many plants bear common names descriptive of this use. Within its natural range, the Taino and other native tribes used an extract from the bark, roots, twigs, and leaves of Florida fishpoison tree to sedate fish, making them easier to catch. A number of chemicals present in the tree's tissues are toxic to fish, the principal one being the well-known rotenone.

Herbal medicine P. piscipula can be toxic and should only be used under direction of a doctor. Dosage must be individually determined. It has been used in herbal medicine for treating nervous conditions, pain, and insomnia. Recent scientific studies in animals suggest that bark extracts may have potential for their anti-inflammatory, sedative, and antispasmodic effects.

Illustrations

Worked examples

Example 1 — a first encounter with Piscidia piscipula

Start with the simplest possible case. Write down what Piscidia piscipula claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Piscidia piscipula before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Piscidia piscipula ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Piscidia piscipula

In research: Piscidia piscipula appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Piscidia piscipula in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Piscidia piscipula is common in secondary-school and first-year university syllabi. It links to neighbouring topics Butterfly food plants, Flora of Central America, Flora of Florida, so understanding it makes those chapters shorter.
In everyday life: Look for Piscidia piscipula outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Piscidia piscipula in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Piscidia piscipula means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Piscidia piscipula out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Piscidia piscipula in simple terms?

Why does Piscidia piscipula matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Piscidia piscipula?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Piscidia piscipula.