
(The photo is the result of gathering together the tiny fallen flowers. They didn't actually appear on the mud like this.)
I looked up, and saw the plants on the trees around us!

I believe these are Hoya diversifolia, which is listed as 'Critically Endangered' in the Red List of threatened plants of Singapore. It's my first time seeing this plant!

Read more about our hoyas in "Heavenly Hoyas: An introduction to the species of Singapore and Malaysia" by Leong Lup San, with the fabulous photos or K. F. Yap in Nature Watch Vol 9 No 4 Oct-Dec 01.
References
- Hsuan Keng, S.C. Chin and H. T. W. Tan. 1990, The Concise Flora of Singapore: Gymnosperms and Dicotyledons. Singapore University Press. 222 pp.
- Davison, G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore Red Data Book: Threatened plants and animals of Singapore. Nature Society (Singapore). 285 pp.