Dita Tree
Definition
The Dita Tree (Alstonia scholaris), also called the blackboard tree, is a tall evergreen tree of the dogbane family (Apocynaceae) native to South and Southeast Asia including the Philippines, widely planted along roads, plazas, and campuses for its symmetrical crown and fragrant flowers. Its pale, lightweight wood historically supplied slates and blackboards, while its bitter bark is a familiar folk medicine across its range.
Identities (Wikipedia/Wikidata/DBpedia)
| Source Type | Identity |
|---|---|
| Wikipedia | Alstonia scholaris |
| Wikidata | Q135307 |
| DBpedia | N/A |
Also Known As
Alstonia scholaris; blackboard tree; devil tree; milkwood pine; dita (Philippine common name).
Examples and Analogies
Dita is the Philippines’ campus sentinel, standing in school yards the way acacias line provincial plazas: planted for shade and dignity, but with a personality of its own, releasing strong-scented cream-white blossoms at night that perfume (or overpower) whole streets.
Usage Scenarios
Landscape architects use it as an avenue and shade tree; traditional healers prepare bark decoctions for fevers and coughs; woodworkers use the soft timber for carving, pencils, and coffins; and pharmacologists study its alkaloids.
Strategies
Arborists manage it by siting away from narrow sidewalks because of surface roots and brittle branches, scheduling post-flowering cleanup, and selecting propagation stock from healthy local lineages for street-planting programs.
Security and Safety Measures
All parts exude milky latex that can irritate skin, so pruning crews use protection; herbal use of the bark is moderated by guidance on dosage and on avoiding self-medication for serious illness.
Historical Context
Named for the scholar, because its wood made writing slates, the species spread through the tropics as a colonial-era avenue tree; in the Philippines it became one of the most recognizable campus and cemetery trees, and its bark entered folk pharmacopoeias long before modern studies examined its constituents.
Challenges and Controversies
Some cities debate removing flowering ditas because the nighttime scent is intense and allergenic to sensitive individuals; conservation-wise, its abundance as an ornamental masks the sparse natural regeneration of wild populations in closed forests.