Floristic value of Nee Soon swamp 
51 
Table 1 . Sixteen species presumed Nationally Extinct but rediscovered in the Nee Soon swamp 
forest after the publication of the 2 nd edition of the Singapore Red Data Book, and documented 
by various sources, prior to our study. 
S/No. 
Species 
Family 
Habit 
Reference 
1 . 
Aeschynanthus albidus 
(Blume) Steud. 
Gesneriaceae 
Epiphyte 
Lok & Tan (2008) 
2. 
Bulbophyllum 
singaporeanum Schltr. 
Orchidaceae 
Epiphyte 
Yam et al. (2010) 
3. 
Callostylis pulchella (Lindl.) 
S.C.Chen & Z.H.Tsi 
Orchidaceae 
Epiphyte 
Lok et al. (2012) 
4. 
Coelogyne rochussenii De 
Vriese 
Orchidaceae 
Epiphyte 
Lok et al. (2011b) 
5. 
Dendrobium aloifolium 
(Blume) Rchb.f. 
Orchidaceae 
Epiphyte 
Ang et al. (2010b) 
6. 
Dischidia hirsuta (Blume) 
Decne. 
Apocynaceae 
Epiphyte 
Rodda et al. (2012) 
7. 
Ficus delosyce Corner 
Moraceae 
Strangler 
Ang et al. (2014) 
8. 
Freycinetia javanica Blume 
Pandanaceae 
Climber 
Ang et al. (2012a) 
9. 
Hetaeria obliqua Blume 
Orchidaceae 
Herb 
Leong & Yam 
(2013) 
10. 
Liparis barbata Lindl. 
Orchidaceae 
Herb 
Lok et al. (2010) 
11. 
Pinanga simplicifrons (Miq.) 
Becc. 
Arecaceae 
Clumping 
palm 
Ang et al. (2010a) 
12. 
Polystachya concreta (Jacq.) 
Garay & H.R. Sweet 
Orchidaceae 
Epiphyte 
Lok et al. (2011a) 
13. 
Pterisanthes cissioides 
Blume 
Vitaceae 
Climber 
Yeo et al. (2012) 
14. 
Renanthera elongata (Blume) 
Lindl. 
Orchidaceae 
Herb 
Ang et al. (2011) 
15. 
Salacca affinis Griff. 
Arecaceae 
Clumping 
palm 
Loo (2011) 
16. 
Trichotosia velutina (Lodd. 
ex Lindl.) Kraenzl. 
Orchidaceae 
Epiphyte 
Ang et al. (2012b) 
Methods 
Our 20 x 20 m vegetation plots were briefly described by Chong et al. (2016). Nine 
of the ten plots from the earlier phase of the project were extended and re-surveyed; 
one plot was discarded because it fell outside of the new delineation of the Nee Soon 
catchment. Using a preliminary digital elevation model developed during the earlier 
project phase, we divided the study area into five elevational strata: 0-20, 20-40, 
