Each stool is made from a single block of the wood of Alstonia boonei ( a tall forest tree with numinous associations ) and carved with a crescent-shaped seat, flat base and complex support structure.
22.
It also occurs in " Alstonia boonei " ( Apocynaceae ), a medicinal tree of West Africa and in the medicinal / entheogenic shrub Desfontainia spinosa ( Columelliaceae ) native to Central America and South America.
23.
The most common tree species ( in density and frequency ) are the " Melanolepis multiglandulosa " ( Kamala tree ) and " Colona serratifolia ", followed by " Clausena brevistyla " and " Alstonia scholaris " ( Blackboard tree ).
24.
These trees can grow very large, such as " Alstonia pneumatophora ", recorded with a height of 60 m and a diameter of more than 2 m . " Alstonia longifolia " is the only species growing in Central America ( mainly shrubs, but also trees 20 m high ).
25.
These trees can grow very large, such as " Alstonia pneumatophora ", recorded with a height of 60 m and a diameter of more than 2 m . " Alstonia longifolia " is the only species growing in Central America ( mainly shrubs, but also trees 20 m high ).
26.
Locally present fauna include the silvery gibbon, Javan surili and Sunda thrush, and flora include " Elaeocarpus macrocerus ", " Alstonia spathulata ", " Mangifera gedebe " ( a member of the mango family ), " Stemonurus secundiflorus ", and " Thoracostachyrum sumatrana " ( a large sedge ).
27.
Typical species that make up this type of rainforest are described as Acmena graveolens, Alstonia scholaris, Archontophoenix alexandrae, Argyrodendron peralatum, Backhousia bancroftii, Beilschmiedia tooram, Castanospermum australe, Cryptocarya corrugata, C . grandis, C . hypospodia, C . mackinnoniana, Diploglottissmithii, Dysoxylum papuanum, D . parasiticum, D . pettigrewianum, Elaeocarpus angustifolius, Endiandra palmerstonii, E . pubens, E . sankeyana, Ficus racemosa, F . septica, Gmelina fasciculiflora, Syzigium cormiflorum and S . kuranda.
