At a glance
RECORDED PROFILE DATA- Scientific name
- Angraecum decipiens Summerh.
- Name status
- Accepted
- Native region
- Kenya, Rwanda, Tanzania (East Tropical Africa)
- Growth habit
- Epiphytic subshrub (twig epiphyte)
- Cultivation temperature group
- Cool (mountain) – prefers cool to cold conditions
- Flower size
- 2–5 mm (0.1–0.2 in) across
- Mature plant height
- up to ~30 cm
Names and Taxonomy
Angraecum decipiens Summerh. was first described in Kew Bulletin 20:189 (1966) and is accepted as the correct name for this species according to Kew’s Plants of the World Online [1]. Two later synonyms are recorded: Angraecopsis decipiens (Summerh.) R.Rice (2005) and Lesliegraecum decipiens (Summerh.) Szlach., Mytnik & Grochocka (2013) [1]. A vernacular name cited in horticultural literature is “The Deceiving Angraecum” [2].
How to Identify This Species
Angraecum decipiens is a miniature epiphytic subshrub that grows as a short, erect stem bearing a small fan of two to four linear‑to‑ligulate, fleshy leaves [2]. The plant reaches roughly 30 cm in height in cultivation [3]. Its inflorescence is a simple, curved raceme 20–45 cm long, bearing 5–15 tiny flowers [2]. Individual flowers are only 2–5 mm across (0.1–0.2 in) and are white‑greenish in colour [2]. A diagnostic character is the rostellum whose outer margins are produced slightly upwards rather than rounded, a trait noted as unusual within the genus [2]. The species resembles members of the genus Angraecopsis in overall habit, but the perianth lacks the defining characters of that genus, confirming its placement in Angraecum [2].
Native Range and Habitat
The species is native to Kenya, Rwanda and northern Tanzania [1], a distribution reflected in the CITES Orchid Checklist [4]. It occurs in montane, seasonally dry tropical forests, typically at elevations of 1 600–2 200 m [2]. In the wild it grows as a twig epiphyte on small trees and bushes in very shady, humid micro‑habitats [2]. The habitat is characterised by cool to cold temperatures and high humidity, conditions typical of East African highland forests.
Species‑Specific Care
| Factor | Documented guidance | Source |
|---|---|---|
| Temperature | Cool to cold; day 15‑22 °C, night 10‑15 °C | [2] |
| Light | Bright‑indirect or deep shade; mimics shady forest understory | [2] |
| Watering | Keep medium consistently moist but not water‑logged; emulate frequent mist in humid forest | [2] |
| Humidity | High (≥70 % RH) to reflect montane forest conditions | [2] |
| Mounting / potting | Mount on coarse bark or place in a well‑draining epiphytic mix (e.g., bark, sphagnum, perlite); avoid heavy, water‑retentive media | [2] |
| Fertilisation | Balanced orchid fertilizer at half strength once a month during active growth | Not documented for this species – general Angraecum guidance |
| Airflow | Good air movement to reduce fungal risk | Not documented for this species – inferred from epiphytic habit |
Because Angraecum decipiens originates from cool, shaded montane forests, it tolerates lower temperatures than many lowland Angraecum species. Providing bright but filtered light, high humidity, and a well‑draining epiphytic medium are the most critical factors for successful growth. Over‑watering or exposure to prolonged dry conditions should be avoided, as the species has low drought tolerance [3]. Regular, dilute feeding during the growing season supports robust vegetative growth and encourages flowering.
Flowering and Pollination
In its natural habitat the plant has been reported to flower in the spring months [2]. Horticultural observations note that, under cultivated conditions, flowering may occur throughout the year [3]. The flowers are fragrant [3], but no specific pollinator has been documented for this species. The minute size of the flowers and the presence of a nectar spur (typical of many Angraecum) suggest moth pollination, but this remains unconfirmed.
Evidence and Limitations
Key aspects such as precise temperature tolerances, humidity thresholds, and pollinator identity are based on limited observations and have not been confirmed by dedicated studies. The care recommendations derive from the species’ described natural habitat and general Angraecum cultivation practice; growers should adjust based on individual plant response. Further field research would be valuable to clarify flowering phenology across its range and to identify natural pollinators.
Frequently asked questions
What temperature range does Angraecum decipiens need?
It is a cool‑mountain species; growers report best results with day temperatures around 15–22 °C and night temperatures 10–15 °C, matching its natural high‑elevation habitat [2].
How large does the plant become?
In cultivation the plant reaches about 30 cm in height [3].
When does Angraecum decipiens flower?
Wild populations have been observed to flower in the spring months [2]. Horticultural records note that, under favorable indoor conditions, it can produce flowers throughout the year [3].
Is the flower scented?
Yes, the species is reported as fragrant [3].
FOLLOW THE EVIDENCE
Sources & references
- Angraecum decipiens Summerh. | Plants of the World Online | Kew Science, Royal Botanic Gardens, Kew, 2026, https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:616073-1
- IOSPE PHOTOS – Angraecum decipiens Summerh. 1966, IOSPE.org, 2026, https://www.orchidspecies.com/angdecipiens.htm
- Angraecum decipiens (Angraecum decipiens) | NativePlants.info, NativePlants.info, 2026, https://www.nativeplants.info/plant/magnoliophyta-flowering-plants/orchidaceae/angraecum/angraecum_decipiens.html
- CITES Orchid Checklist – Part II: Accepted names in current use, Royal Botanic Gardens, Kew, 2026, https://www.kew.org/sites/default/files/PART_II_Names_in_current_use.pdf
- Angraecum – Species Table, Clan Orchids Compendium, 2026, http://www.clanorchids.com/compendium/page3a.html
