56 
Ganl. Bull. Singapore 70 (Suppl. 1) 2018 
1 . Aglaia tenuicaulis Hiern (Meliaceae) 
Listed as present in Singapore in several treatments (e.g. Pannell, 1989; Panned, 2013) 
without any specimens cited. Ridley (1900) had indicated that it was “perhaps an 
error”. The only specimen of this species we know of that is collected from Singapore 
is deposited in the herbarium of the Royal Botanic Gardens at Kew (. Lobb s.n.; cited 
in Panned, 1992). The two collections made in our study were identified as Aglaia 
tenuicaulis based on the reddish-brown stellate hairs interspersed with pale-brown 
stellate hairs and scales present on the lamina below. The twig apices are also densely 
covered in reddish-brown stellate hairs. This species has large compound leaves up to 
1.3 m long, with 3-5 large leaflets each up to 45 cm long and 14 cm wide, and 16-19 
pairs of lateral veins. According to Panned (1989), this is a small tree common in the 
Malay Peninsula, in lowland or hid dipterocarp forest. 
2 . Baccaurea macrophylla (Mull.Arg.) Mull.Arg. (Phyllanthaceae) 
This species was most recently collected from MacRitchie Reservoir {Corner s.n., 
29 Oct 1944 [SING0012586]). It was also previously collected from Bukit Mandai 
{MohdNoor s.n., 28 Nov 1917 [SING0012585]). As suggested by its name, Baccaurea 
macrophylla is a large-leaved member of the genus. It can be recognised by a distinct 
set of characteristics: prominent stipules up to 11 x 11.5 mm in size, stellate hairs, 
discoid glands present in a row between secondary veins on its lower leaf surface, 
and a papery leaf texture. It is a medium-sized tree and can be found in primary and 
secondary rainforests, as wed as peat swamp forests (Haegans, 2000). 
3. Callistopteris superba (Backh. exT.Moore)Ebihara&K.Iwats. (Hymenophyllaceae) 
Previously collected only once from Bukit Timah {Ridley s.n., 1897 [SING0031767]) 
and another time from Seletar Woods {Matthew s.n. [SING0032459]). Terrestrial 
fern with erect rhizomes and stout roots, winged stipes, and glandular hairs on the 
underside of the lamina. In the Singapore Red Data Book, this was listed under the 
name Cephalomanes superbum (Backh. ex T.Moore) I.M.Turner; another synonym 
used locally is Trichomanes superbum Backh. ex T.Moore (Turner, 1995; Ebihara et 
al., 2006). 
4 . Deplanchea bancana (Scheff.) Steenis (Bignoniaceae) 
A recent collection of this species was made near the Nee Soon pipeline {Leong et al. 
SING2013-100, 20 May 2013). Prior to this, it was collected from Kranji {Goodenough 
s.n., 18 Dec 1889 [SING0166223]), from one tree in Bukit Timah (Corner, 1988: 176; 
Comer s.n., 8 Jul 1938 [SING0004012, SING0004015]), and listed by Corner (1978) 
as found in the now-lost freshwater swamp forest at Mandai. It is easily recognised by 
its simple, fairly large, whorled leaves covered with light-coloured hairs, with glands 
at the cordate base of the lamina. According to Kochummen (1978a: 37), this is a 
tad tree with a fluted base and steep buttresses which occurs especially by swampy 
streams. 
