Blackboard Tree vs Chocolate Root

Alstonia scholaris compared with Geum rivale

Key Differences

• Blackboard Tree is Least Concern while Chocolate Root is Extinct.

Taxonomic Classification

Rank	Blackboard Tree	Chocolate Root
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Gentianales (Gentianales)	Rosales (Roses & Allies)
Family	Apocynaceae	Rosaceae (Rose Family)
Genus	Alstonia	Geum
Species	Alstonia scholaris	Geum rivale

Evolutionary Relationship

Blackboard Tree and Chocolate Root share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Blackboard Tree

LC — Least Concern

Chocolate Root

EX — Extinct

Physical Characteristics

Attribute	Blackboard Tree	Chocolate Root
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blackboard Tree

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Range

Distributed across Micronesia, Taiwan, and United States.

Chocolate Root

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found across Europe (7 countries) and North America (Canada, United States).

Blackboard Tree

The Blackboard Tree (Alstonia scholaris) is a species in the genus Alstonia. It is currently classified as Least Concern on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Chocolate Root

Chocolate Root (Geum rivale), also called Water Avens or Indian Chocolate, is a herbaceous perennial plant in the family Rosaceae, native to cool, moist habitats across Europe, northern Asia, and North America, where it grows in wet meadows, fens, stream banks, and damp woodlands. It produces pinnate leaves with a large terminal leaflet and drooping, nodding flowers whose petals are cream to pink and surrounded by distinctive purplish-red sepals giving the flower a nodding, bell-like appearance when closed. The nodding habit is an adaptation for rain-pollination avoidance, and fertilised flowers develop achene fruits topped with hooked styles for animal dispersal. The name Chocolate Root refers to the aromatic rhizome, which has been used traditionally as a chocolate-like flavouring in beverages and as a medicinal herb with astringent and tonic properties. The IUCN classifies Geum rivale as Extinct in certain regional contexts — notably in some lowland British localities where wetland drainage, river modification, and agricultural intensification have eliminated populations — though the species remains widespread and Least Concern across its global range. Its continued survival depends on the protection of wetland habitats, and it is used as an indicator of ancient, species-rich wetland communities of conservation importance.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States