Uvaria concava
species of plant in the family Annonaceae
Uvaria concava, commonly known as calabao, is a plant in the custard apple family Annonaceae that is native throughout tropical Asia, from India to northern Australia. It is a rainforest climber, first described in 1855.
Description
This is a scrambling shrub or woody vine with a stem diameter up to 5 cm (2 in). Young branches are covered in reddish-brown or golden hairs. Leaves arranged alternately on the twigs and are hairless on both sides. They are elliptic to obovate in shape and can grow to be 25 cm (9.8 in) long and 9 cm (3.5 in) wide.
Large red flowers appear singly on the twigs, opposite the leaves. They have three sepals and six petals arranged in two whorls of three, each measuring about 28 mm (1.1 in) long and 22 mm (0.9 in) wide. The flowers have about 120 stamens and 30 to 40 carpels. The fruit is a cluster of fruiting carpels.
The public source identifies “Uvaria concava” as species of plant in the family Annonaceae. This brief keeps that definition visible, then builds a research path around Uvaria, concava and species.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Uvaria concava”, the useful work is to connect “species of plant in the family Annonaceae” to the records capable of establishing context and consequence.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jul 1, 2026. The linked authority identifier is Q17139234. The first chronological checks are 1855.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
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Questions for further research
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Search terms from this dossier
This entry incorporates text from “Uvaria concava” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.