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Tree ID

Post any plants you would like to be id in this sub-forum

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Re: Tree ID

Postby anuj » Thu May 24, 2012 8:05 pm

Just to add on some description on behalf of Yi Kai (lemon) - This was at Upper Seletar Forest. About the height of tall mango/rambutan tree. The flowers were attracting few rare butterflies.
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Re: Tree ID

Postby yi shuen » Sun May 27, 2012 3:06 pm

This nice tree is Lithocarpus elegans, in the oak family. The first photo by lemon shows the male inflorescence spikes. According to Corner's Wayside Trees, the male flowers have a strong sweet scent but no honey, attracting a variety of insects which aid in pollination, while the female spikes are unscented. The fruits are acorns.
Just to check, does the name 'oakblue' imply that the host plants are often in the oak family Fagaceae?
Check out Uncle Tony's Flora Singapura at or my Flickr site at for more photos.

yi shuen
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Re: Tree ID

Postby anuj » Mon May 28, 2012 1:57 pm

Thanks Yi Shuen. Spot on! This is listed as Critically endangered in Kwek Yan's updated Flora of Singapore checklist (2009).

From what I know, oak blue just refers to the coloration of these butterflies and doesn't refer to the host plant. For example the commonest of the oak blue butterflies - Centaur Oakblue uses Syzygium grandis (Myrtaceae) as host plant.

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