Alstonia congensis

Alstonia · Apocynaceae

Summary of the structured data documented in ClimaFlora for this taxon.

ApocynaceaeTree

Hiobson · CC BY-SA 4.0 · wikimedia_commons · source

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Identity and native distribution

Family

Apocynaceae

Life form

Tree

Documented native regions

Africa

Environmental usesMaterialsMedicinal useDocumented toxicitySocial uses

Variable	Observed range	Central range
Annual mean temperature	21.93 – 28.85	22.41 – 28.49
Temperature of the warmest month	27.53 – 40.05	28.01 – 39.75
Temperature of the coldest month	14.29 – 22.65	16.49 – 21.57
Annual precipitation	601.36 – 4226.84	678.82 – 3812.24
Precipitation seasonality	22.7 – 131.36	27.5 – 131

These values describe the documented climate envelope of the taxon. They are not, by themselves, a local recommendation.

Variable	Unit	Observed range	Central range
Cation exchange capacity (CEC)	cmol(+)/kg	5.3 – 21.84	6.92 – 17.62
Clay	%	12.31 – 46.76	15.5 – 43.52
Coarse fragments	%	0.7 – 28.06	1.6 – 22.05
Total nitrogen	g/kg	0.4 – 6.97	0.47 – 3.4
pH	—	4.4 – 6.88	4.5 – 6.5
Sand	%	32.52 – 82.79	38.92 – 80.17
Soil organic carbon	g/kg	4.73 – 47.99	6.28 – 35.83

These soil preferences should be compared with the site profile and the confidence of the local data.