Angraecum musculiferum

Names and Taxonomy

Angraecum musculiferum H.Perrier is the accepted name for this species according to Kew’s Plants of the World Online[1]. It was first published in Notulae Systematicae (Paris) 7: 129 (1938). A later homotypic synonym is Lepervenchea musculifera (H.Perrier) Szlach., Mytnik & Grochocka (2013)[1][5]. No other synonyms or varieties are documented.

How to Identify This Species

The plant is a miniature to medium‑sized epiphytic subshrub. Stems are erect and bear numerous distichously arranged, widely linear leaves that are unequally obtuse at the apex. Leaves are relatively thin and arise along the stem rather than only at the base. The inflorescence is axillary, 5.5 cm long, bearing 4–10 flowers[4]. Individual flowers are about 1.25 cm (½ in) across, white‑cream in colour, with a short spur typical of many Angraecum species. The flower’s fragrance is not recorded in the sources. These characters, especially the linear leaves and small white flowers on a short axillary raceme, help separate it from related Angraecum species, although definitive identification may require comparison with herbarium material.

Native Range and Habitat

Angraecum musculiferum is endemic to northern Madagascar, where it grows as an epiphyte on tree trunks in moss‑rich montane forests[1][4]. It occurs at elevations of roughly 1,200–1,550 m, within a seasonally dry tropical biome that retains high humidity in the forest canopy. The species is not reported from cultivated or introduced locations.

Species-Specific Care

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Because the species originates from cool, humid montane forests, providing a cool night temperature (approximately 12‑18 °C) and a moderate daytime temperature (20‑24 °C) is advisable, though exact values are not published. Ensure good air circulation and avoid water‑logging. A bark slab or a coarse, well‑draining orchid medium mimics its natural epiphytic habit.

Flowering and Pollination

Flowering occurs from spring through fall in its native range, with each inflorescence bearing 4–10 flowers that last several weeks[4]. Individual flowers are about 1.25 cm across and possess a short nectar spur, but fragrance timing and specific pollinators have not been documented.

Conservation and Responsible Cultivation

An IUCN Red List assessment for Angraecum musculiferum was published in 2020[11], but the excerpt does not include the assigned threat category. The species is endemic to Madagascar, where many forest habitats face ongoing pressures from deforestation and land‑use change. Cultivators should ensure that any plant material is sourced from legally compliant, sustainably managed collections to avoid contributing to illegal trade.

Evidence and Limitations

Key information such as precise temperature and humidity targets, watering frequency, fertilisation regimes, and pollinator identity is not documented in the available sources. The conservation status (e.g., Vulnerable, Endangered) could not be extracted from the IUCN entry snippet. Future field studies and horticultural trials would help fill these gaps.