Hopea helferi
Hopea helferi
Safety & Hazards
None known
Cultivation Details
A plant of lowland, tropical monsoon climates, it is usually found at elevations below 700 metres[1]. Young plants are shade tolerant, though require more sun as they grow larger[1]. Occurs on deep and wet soils in the wild, especially on sedimentary rocks with an acid to neutral pH[1]. It also occurs in relatively poor sites where it is distributed sporadically[1].
Propagation
Seed - The seeds are mature and ready for collection when the wings have turned to a dark brown and the coat has changed from green to yellow[1]. It is important to time the collections of this species carefully, as seeds that are not fully mature have low viability[1]. The fruit is collected directly by climbing the tree, or by shaking the branches over tarpaulins spread on the ground. Collection from the forest floor should be avoided as these seeds have low viability and are often heavily infected by weevils[1]. Fresh seeds have high moisture content and must be kept in loosely folded bags away from the sunlight during transport and temporary storage[1]. Soon after collection in the field the wings of each fruit must be removed manually; while immature and insect-infected fruits are to be discarded[1]. Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2026-02-20. <tropical.theferns.info/viewtropical.php?id=Hopea+helferi>
Pollinators
Insects
References
- [1]Digital Compendium of Forestry Species of Cambodia — www.digitalspecies.blogspot.com; Phnom Penh · 2008 · http://www.digitalspecies.blogspot.com ↩︎A very detailed booklet, produced in PDF format on the internet, giving information on around 100 species of trees.
- [2]IUCN Red List of Threatened Species — http://www.iucnredlist.org/ ↩︎A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
- [3]Flora Malesiana Series 1 — Various · Nationaal Herbarium Nederiand, Universiteit Leiden branch · http://www.archive.org ↩︎A massive treatment of the plants of the Malaysian Archipelago. Much of it has been made available to download from the Internet