Alluaudia ascendens

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Common products:
- Fuelwood (biomass for domestic energy)
- Small‑scale construction timber (poles, rafters, and fence posts)

Industrial and craft applications:
- Production of charcoal (via low‑temperature carbonisation of seasoned stems)
- Craft wood for tool handles, small furniture items, and decorative objects

Wood and fiber:
- Stems are used as structural material; the fibrous, relatively dense wood (≈0.6–0.8 g cm⁻³) provides modest load‑bearing capacity for lightweight constructions and for fencing.
- The wood’s high caloric value (≈18 MJ kg⁻¹ after seasoning) makes it suitable for solid‑fuel applications and for charcoal production.

Properties relevant to use:
- Low moisture content after seasoning (≈10–15 % MC) contributes to a high heating value and clean combustion.
- Moderate hardness and tight grain improve durability for exterior uses such as fence posts.
- Absence of appreciable resin or extractives reduces smoke formation during burning and facilitates uniform charcoal yield.

Standards and regulation:
- Harvest and trade are subject to national forest‑management legislation in Madagascar; permits are required for commercial extraction.
- The species is not listed under the CITES Appendices, but its restricted distribution has prompted local guidelines encouraging selective cutting and regeneration.

Sustainability and sourcing:
- The species occurs naturally in the spiny forest of southwestern Madagascar and is harvested primarily from wild populations.
- Over‑exploitation can threaten local stands; sustainable practices include rotating harvest zones, replanting, and monitoring of regeneration rates.
- Cultivation trials in arid‑land horticultural systems have shown modest success, offering a potential alternative source for timber and fuel without depleting wild stocks.

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