Angraecum longicaule

Names and Taxonomy

The accepted scientific name is Angraecum longicaule H.Perrier. The name was first published in Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 6: 266 (1955) and is listed as an accepted species by Kew’s Plants of the World Online ^[1]. A homotypic synonym recorded in the same database is Perrierangraecum longicaule (H.Perrier) Szlach., Mytnik & Grochocka (2013). No common name is documented in the consulted sources.

How to Identify This Species

Available references describe Angraecum longicaule only in very general terms: it is an epiphytic subshrub that occurs in wet tropical forests of northeastern Madagascar ^[1]. Detailed morphological characters such as leaf size, flower colour, spur length, or fragrance are not provided in the cited material, so a reliable field identification must rely on herbarium specimens or a specialist’s comparison with closely related Angraecum species. Until a more complete description is published, identification based on photographs alone is uncertain.

Native Range and Habitat

The species is endemic to Madagascar, with the native range recorded as the north‑eastern part of the island ^[1][2]. It grows as an epiphyte on tree branches in a wet tropical biome. Specific elevation limits, host tree preferences, or seasonal patterns are not documented in the sources consulted.

Species‑Specific Care

Scroll to explore the table →

Because specific horticultural data are absent, growers should treat this species as data‑deficient and exercise caution. General practices for epiphytic Angraecum orchids—such as providing good air circulation, moderate to bright filtered light, and a well‑draining orchid mix—may be a starting point, but success cannot be guaranteed without species‑specific trials.

Flowering and Pollination

No published information on the timing, morphology, or pollinators of Angraecum longicaule was found in the consulted sources. Consequently, flowering season, flower longevity, fragrance, spur dimensions, and pollinator identity remain undocumented.

Conservation and Responsible Cultivation

There is no cited conservation assessment (e.g., IUCN Red List) for this species in the available material. The CITES Orchid Checklist lists it as an accepted name but does not provide a threat status ^[2]. Potential collectors should verify the legal status of any material and consider the species’ limited known distribution when planning cultivation.

Evidence and Limitations

The profile is based on two authoritative databases: Kew’s Plants of the World Online and the CITES Orchid Checklist. These sources confirm the accepted name, authorship, and native range, but they do not supply detailed morphological, phenological, or horticultural information. Further field studies, herbarium revisions, or cultivation reports are needed to fill these gaps.