Anivona
Ravenea Madagascariensis • Anivo • Anivokely • Tovovoko
The Essence
"Ravenea madagascariensis — the anivona — is one of about 20 species of Ravenea, a dioecious palm genus confined to Madagascar and the Comoros. Dransfield and Beentje describe it as a very elegant, medium-sized solitary palm: a trunk 5–12 m tall, often thickened at the base into a boss bearing surface roots, carries a crown of 10–26 stiffly erect leaves held like a shuttlecock. A palm of Madagascar's high plateaux, said to characterize the island's montane forest, it grows on steep slopes and hill crests from roughly 50 to 1,700 m, from Manerinerina and Andasibe to Kalambatitra and Midongy, and stands in many protected areas, among them Marojejy, Zahamena, Ranomafana and Andringitra. Odoardo Beccari described the species in 1906; cultivated plants still generally circulate as var. monticola, a variety later sunk by Dransfield and Beentje. The original publication conceals a small mystery: a syntype cited as 'Chevalier s.n.' was really collected by Chapelier, for Chevalier never collected on Madagascar. Locally the hard, flexible outer wood is harvested for house walls and floors. In cultivation the species carried a reputation for cold-hardiness that Southern Californian growers found overstated — many grow well there, but only in zone-10 districts — and because seed so rarely reaches the trade, its ornamental potential remains, in Rare Palm Seeds' judgment, largely unexploited."
The genus name Ravenea honours Louis Ravené, a nineteenth-century official in Berlin; the epithet madagascariensis refers to Madagascar, to which the species is endemic. Odoardo Beccari published the name in Beiblatt zu den Botanischen Jahrbüchern 87: 40 (1906).
When Dransfield and Beentje wrote The Palms of Madagascar (1995) they rated the species 'Rare', its only protected population then being in Mantady. The 2012 IUCN assessment took a brighter view: recorded from 23 locations and numerous protected areas, with a stable population of more than 2,000 mature trees estimated, it was listed as Least Concern, the main threat — forest clearance for shifting agriculture and logging — being judged not significant across so wide a range. The Red List page now carries the annotation that the assessment needs updating.
Natural Habitat
Moist to rather dry hill forest, on steep slopes or hill crests, occasionally on steep slopes in riverine forest, at 50–1,700 m elevation (the Palmweb treatment extends the lower limit to 25 m). It is a palm of the high plateaux that characterizes montane forest in Madagascar, though it has been collected at least once in the coastal region; POWO places it primarily in the seasonally dry tropical biome.
Specimen Gallery Under Curation
Discovering authentic visual assets in the field...
Biology & Morphology
"A solitary, dioecious, non-crownshafted pinnate palm 5–12 m tall, its 16–22 cm trunk often swollen into a basal boss with surface roots, carrying 10–26 erect leaves with 55–82 leaflets per side and bearing sweetly scented yellowish male flowers and small orange one-seeded fruits only 5–10 mm long."
Morphology
Symmetrical columnar trunk with characteristic leaf-scar patterning and lignified outer cortex.
Adventitious root system spreading radially to maximize hydraulic intake in competitive soil matrices.
Distinctive unknown habit and medium stature providing a unique architectural profile.
Foliage
Vibrant green canopy featuring characteristic frond architecture optimized for photon interception and transpiration efficiency.
Specialized green tissues exhibiting moderate metabolic expansion rates.
Reproduction
Complex inflorescence branching typical of the Ravenea clade, exhibiting seasonal reproductive synchrony.
Nutrient-dense drupes encased in a fibrous pericarp, optimized for protection and dispersal.
Dormant embryonic tissues with high endosperm density, characteristic of resilient Ravenea specimens.
Ecology
Active rhizosphere communication with mycorrhizal fungal networks, enhancing phosphorus and micronutrient uptake.
Interlocked with local entomological vectors, primarily Meliponini bees or specialized coleoptera.
Gravity-mediated and animal-vectored dispersal mechanisms ensuring regional genetic distribution.
Germination & Propagation
Germination Timeline
Hydration soak.
Incubation in moist media.
Sprout emergence.
No species-specific germination data was found in authoritative sources — beware that online germination guides for Ravenala madagascariensis describe the unrelated traveler's palm. The species is dioecious, so both male and female plants must be grown if fruit and seed are required, and seeds only rarely reach the trade.
Cultivation & Care
Light
Lightly shaded to full sun; Rare Palm Seeds recommends light shade when young and in hot, dry climates.
Water
Moist, but well drained.
Soil
Well-drained soil; no more specific requirements are given in the sources consulted. The palm exhibits saxophone-style root growth (it forms a heel), and Palmpedia advises keeping the top third of the heel above soil level.
Rated cold hardiness zone 10a. Many Southern Californians planted it believing it quite hardy; grower Geoff Stein reports it really is not, and that the many doing well there are all in zone-10 areas. Rare Palm Seeds rates its frost tolerance as light and expects it to do well in warm temperate as well as some cooler tropical areas. No specific minimum temperature figures have been published in the sources consulted.
Pests, Diseases & Care
Pests
Strategus aloeus (Ox Beetle)
HIGHAdults bore into the base of young palms, causing structural instability.
Soil drenching and manual inspection of the root flare.
Rhynchophorus palmarum (South American Palm Weevil)
CRITICALLarvae tunnel through the apical meristem, leading to crown collapse.
Pheromone trapping and systemic insecticide injection.
Diseases
Colletotrichum spp. (Anthracnose)
MODERATEBlack necrotic spots on leaflets under high humidity.
Copper-based fungicides and reduction of overhead irrigation.
Phytophthora palmivora (Bud Rot)
CRITICALNecrosis of the spear leaf and decay of the meristem.
Fosetyl-Al application and optimizing canopy ventilation.
Nutritional Deficiencies
Interveinal chlorosis (Younger fronds)
Chelated Fe-EDDHA Soil Pulse
Marginal chlorosis (Older fronds)
Mg-Sulfate (Kieserite) saturation
Frizzletop / Distorted spear
Systemic Mn-Sulfate application
Care Tips
Biosurveillance pulse synchronized for Madagascar regional vectors.
Apply prophylactic fungicidal drench in the nocturnal phase.
Improve canopy ventilation to disrupt fungal sporulation cycles.
Sources & Conservation
Curated- Ravenea madagascariensis Becc. — Plants of the World Online, Kew · accessed 2026-09
- Rakotoarinivo, M. & Dransfield, J. (2012). Ravenea madagascariensis — IUCN Red List of Threatened Species · accessed 2026-09
- Ravenea madagascariensis — Palmpedia, Palm Grower's Guide · accessed 2026-09
- Ravenea madagascariensis Becc. — PALMweb (from Dransfield & Beentje, The Palms of Madagascar, 1995) · accessed 2026-09
- Ravenea H.Wendl. ex C.D.Bouché — PALMweb (genus treatment, incl. etymology) · accessed 2026-09
- Ravenea madagascariensis — Wikipedia · accessed 2026-09
- Ravenea (genus) — Wikipedia · accessed 2026-09
- Ravenea madagascariensis — Useful Tropical Plants Database · accessed 2026-09
- Ravenea madagascariensis Becc. — GBIF Backbone Taxonomy (taxon key 2739050) · accessed 2026-09
- Ravenea madagascariensis — Rare Palm Seeds · accessed 2026-09