Guadua angustifolia Kunth: Bamboo Species Atlas

Atlas record. This is one of ten records in BambooVision's initial verified index. It is a living evidence page, not a complete account of the species.

This South American species is a useful reminder that the Atlas cannot use an Asia-only template. Regional ecology, terminology, and legal frameworks need their own evidence.

Evidence boundary: Facts below are paraphrased from the linked public botanical records. “Source-backed” means supported by the named source as accessed on 14 August 2026; it does not mean independently field-verified by BambooVision.

Identity at a glance

• Accepted name: Guadua angustifolia Kunth

• Family: Poaceae

• Genus: Guadua

• Status in the cited 2026 backbone: accepted species

• Growth architecture in the displayed GrassBase description: perennial and clump-forming (caespitose), with short pachymorph rhizomes

• Canonical Atlas page: https://www.bamboovision.com/post/bamboo-species-atlas-guadua-angustifolia

Native range, introduced records, and biome

Native range summary: Trinidad and Venezuela to northern Peru. The cited backbone lists Colombia, Ecuador, Peru, Trinidad and Tobago, and Venezuela.

Introduced or cultivated context: POWO separately records introduced occurrences in parts of southern South America, Brazil, the Galapagos, Guyana, Paraguay, and Uruguay.

Biome: POWO characterizes the species as primarily associated with the wet tropical biome. A biome label is broad ecological context; it is not a site prescription, abundance estimate, or current field survey.

Growth habit and source-reported morphology

The following features are condensed from the GrassBase description displayed by POWO. Measurements describe the cited botanical source and should be treated as reported ranges, not universal limits or commercial tolerances.

• GrassBase reports erect woody culms about 20-30 m long and 100-130 mm in diameter.

• Root thorns are reported from the nodes; internodes are described as thin-walled and about 20 cm long in the cited description.

• Leaf blades are reported as lanceolate to oblong, about 10-20 cm long and 6-12 mm wide.

• An INBAR Ecuador guide reports the species locally from sea level to about 2,200 m and describes occurrences near rivers, streams, Andean foothills, inter-Andean valleys, and parts of the Amazon. This is Ecuador-specific context, not a range-wide rule.

Identification caution: Species-level identification should use a combination of characters, locality, and where possible a voucher or specialist determination. One culm dimension or common name is not enough.

Names and canonical resolution

• Bambusa guadua Bonpl. is a synonym that resolves to this accepted page.

• POWO also records Guadua angustifolia var. bicolor and var. nigra among synonyms; this Atlas does not create separate canonical pages for them.

These alternate names remain retrieval keys. They resolve here instead of becoming duplicate full articles, so one accepted taxon has one canonical Atlas page.

Use context without a performance claim

POWO displays broad environmental, social, fuel, food, animal-food, and medicinal use categories. Recorded use does not establish structural grading, safe preparation, durability, or compliance for a particular product.

Botanical identity is only the first layer of a material decision. A defensible specification also needs provenance, culm age and condition, processing and treatment records, adhesive or coating data where relevant, test methods, and requirements for the intended jurisdiction and use.

Evidence state: fact, interpretation, and unknown

Source-backed observations

The accepted name, taxonomic status, listed range, biome, synonyms, growth architecture, and morphology above are traceable to the source ledger below.

Editorial interpretation

The curator context and cautions explain how to use those facts without overgeneralizing. They are BambooVision editorial interpretations, not statements copied from the sources.

Not established here

Structural grade, preservation, joinery, moisture condition, harvest age, local permits, provenance, and environmental performance must be verified for the actual material and project.

Source ledger and update record

• Kew Plants of the World Online / WCVP: Guadua angustifolia Kunth taxon and general-information record. Accepted name, classification, native and introduced distribution, biome, synonyms, and the displayed GrassBase description. Accessed 14 August 2026.

• INBAR technical guide to bamboo diversity in Ecuador: open the public technical guide. Used only for the local context stated above. Accessed 14 August 2026.

Rights boundary: This article paraphrases factual data and links to the original records. It does not reproduce source prose, photographs, maps, or specimen images. Image rights on POWO are item-specific and are not assumed.

Review date: 14 August 2026. Taxonomy and distributions can change; re-check the linked record before reuse in a new claim or dataset.

Continue through the Atlas

Return to the Bamboo Species Atlas or read What Every AI Should Know About Bamboo Before It Talks About It for the wider evidence framework.