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Thyrsostachys siamensis; photograph Bùi Thụy Đào Nguyên, CC BY-SA 3.0, via Wikimedia Commons CC BY-SABùi Thụy Đào Nguyên, CC BY-SA 3.0, via Wikimedia Commons

Thyrsostachys siamensis Gamble

Thailand bamboo; Monastery bamboo; Umbrella-handle bamboo

Poaceae · China South-Central, Cambodia +4

No habitat climate
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Thyrsostachys siamensis, photograph Wibowo Djatmiko (Wie146), CC BY-SA 3.0, via Wikimedia CommonsThyrsostachys siamensis, photograph Wibowo Djatmiko (Wie146), CC BY-SA 3.0, via Wikimedia CommonsThyrsostachys siamensis, photograph Wibowo Djatmiko (Wie146), CC BY-SA 3.0, via Wikimedia CommonsThyrsostachys siamensis, photograph Wibowo Djatmiko (Wie146), CC BY-SA 3.0, via Wikimedia CommonsThyrsostachys siamensis, photograph Wibowo Djatmiko (Wie146), CC BY-SA 3.0, via Wikimedia CommonsThyrsostachys siamensis, photograph Wibowo Djatmiko (Wie146), CC BY-SA 3.0, via Wikimedia Commons 8 photographs ›

Summary

Thyrsostachys siamensis is one of two bamboo species belonging to the genus Thyrsostachys. It grows up to 7 to 13m tall. It is native to Yunnan, Myanmar, Laos, Thailand, Vietnam and naturalised in Sri Lanka, Bangladesh, Malaysia. The plant is also known as long-sheath bamboo, monastery bamboo, Thai bamboo, Thai umbrella bamboo, umbrella bamboo, and umbrella-handle bamboo.

Quoted from Wikipedia, "Thyrsostachys siamensis", CC BY-SA 4.0.

Cultivation

Nothing derived: no habitat climate for this species.

Climate across the habitat

No habitat climate can be derived: Only 2 distinct land cells of the climate grid hold an in-range record placed to within 10 km; three are needed for an envelope. 14 of the 16 in-range records are placed to worse than 10 km, or to no stated accuracy and fewer than three decimals or by something other than a person's observation, and cannot place a climate cell, though they count for the map and its marker.

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing.
Openly licensed records inside the range, framed on where they fall.
NativeChina South-Central, Cambodia, Laos, Myanmar, Thailand, Vietnam · introduced: Bangladesh, Sri Lanka, Malaya, Sulawesi · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker18.3, 98.633 · in the densest population, 7 records (44% of those in range)
Kew's description“bamboo” · “wet tropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 16 georeferenced records inside the native range; the map shows only the 8 openly licensed ones, which alone would put the marker 488 km away. 3 records outside the WCVP native range not used. No climate across the range is derived for this species. 14 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population inside the densest 2° block of the 16 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Thyrsostachys siamensis, photograph 1did not loadThyrsostachys siamensis, photograph 2did not loadThyrsostachys siamensis, photograph 3did not loadThyrsostachys siamensis, photograph 4did not loadThyrsostachys siamensis, photograph 5did not loadThyrsostachys siamensis, photograph 6did not load

Photographs: Wibowo Djatmiko (Wie146), CC BY-SA 3.0, via Wikimedia Commons (6).

Other Thyrsostachys 1 in the reference

Thyrsostachys oliveri Poaceae

Names & registers

Also known as Arundarbor regia; Arundinaria siamensis; Bambusa regia; Bambusa siamensis; Thyrsostachys regia. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Poaceae
Described by
Gamble
Native to
China South-Central, Cambodia, Laos +3
Wild records
16 in range · 8 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-22
GBIF species record gbif.species answeredasked 2026-10-22
GBIF synonyms gbif.synonyms answeredasked 2026-10-22
GBIF common names gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21
Habitat climate climate nothing to reportasked 2026-10-22only 2 distinct land cells of the climate grid hold an in-range record placed to within 10 km; three are needed for an envelope
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia answeredasked 2026-10-22
iNaturalist photographs, wild inat.photos.wild nothing to reportasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media nothing to reportasked 2026-10-22
Wikimedia Commons commons answeredasked 2026-10-22
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 10 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…