Angraecum eburneum

Angraecum eburneum
Kew Gardens

The genus Angraecum belongs to the family Orchidaceae, subfamily Epidendroideae, tribe Vandeae and sub-tribe Angraecinae.

It contains about 220 species, some of which are among the most beautiful orchids.

The flowers have a long spur at the bottom of which is the nectar.

Darwin speculated that there must be a pollinator with a tongue just long enough to reach the bottom of the spur. The pollinator was found long after his death: a moth called Xanthopan morganii praedicta.

Description:

These orchids do not have a pseudo-bulb, but one or more stems.

Plants and flowers are very varied. They are adapted to dry tropical forests and usually have fleshy leaves. Most are epiphytes, some lithophytes.

The flowers grow in clusters and have a spur at the back of the labellum. They are usually white, sometimes yellow, green or ocher.

Nomenclature:

Synonyms:

Aerobion, Angorchis, Ctenorchis, Macroplectrum, Monixus, Pectinaria

Etymology:

Angraecum: angrek or angurek, a Malay word for orchid.

Origin:

Mainly in Africa and Madagascar, some species in Southeast Asia.



Habitat:

Dry tropical forests, between 0 and 2,000 m altitude.

Care:

Substrate:

Special orchid substrate in shallow pots or mounted on bark.

Light:

Needs a lot of diffused light to develop properly. Place near a window to the east or south in winter.

Temperature:

15-28 °C

Water:

Give water whenever the substrate has just dried up. Keep slightly moist during flowering.

Tap water can be decalcified with vinegar: 1 ml (8%) per liter of water. You can also use distilled water.

Humidity:

60-90 %

Ventilation:

Although a relatively high humidity is necessary, they need good ventilation.

Fertilizer:

Add fertilizer at each watering and each 2 waterings in winter.

Repotting:

Repot only when strictly necessary, in the spring.

Species:

Image sources

  • Angraecum eburneum: Own work

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