KEY TO THE SPECIES OF THE PHILIPPINES

1Leaflets smooth below, without papillae, rather shiny
1'Leaflets papillate below, dull, greyish or whitish
2Rachis not (to slightly) winged (Fig. 33a, b). Blade of petals obovate, gradually decurrent into the claw (Fig. 36e)
2'Rachis slightly winged (Fig. 33b). Blade of petals orbicular, abruptly clawed (Fig. 36f)
3Apex of leaflets (obtuse to) acuminate to caudate. Scales of petals basically not auriculate (Fig. 36b), membranous margin along scales indistinct
3'Apex of leaflets (cuspidate to) caudate. Scales of petals basally auricled (Fig. 36c), membranous margin along scales distinct
4Rachis often (slightly) winged (Fig. 33b, c). Leaflets elliptic, usually symmetrical; apex abruptly (acuminate to) cuspidate; very apex obtuse (to acute); domatia absent or 1 sac
4'Rachis terete to flattened and broadened (to slightly winged; Fig. 33). Leaflets ovate (to elliptic), asymmetrical; apex (obtuse to) usually gradually acuminate to caudate; very apex acute to usually mucronulate; domatia absent to many sacs (to pockets)
5Rachis winged or not (Fig. 33). Leaflets ovate to obovate, (sub)coriaceous to very coriaceous, punctate or not; apex retuse to caudate; domatia absent to many. Inflorescence subglabrous to usually shortly brown sericeous to hirsute. Blade of petal obovate, gradually decurrent into claw (Fig. 36e); crest absent or part of bifid scale apex (to clavate; Fig. 36h-k) (N.B.: petals of G. palawanica and G. parvifoliola unknown)
5'Rachis not winged (Fig. 33a). Leaflets ovate (to elliptic), coriaceous, punctate; domatia (absent to 1-many sacs to) many pockets. Inflorescence long golden (sericeous to) hirsute. Blade of petal orbicular, sharp transition with claw (Fig. 36f); crest clavate, stipitate (Fig. 36k)
6Ovary subhirsute. Fruits glabrous
6'Ovary densely hirsute. Fruits sericeous, glabrescent
7Upper leaflets ovate to obovate; apex rounded to caudate; below (glabrous to) sericeous to hirsute, domatia absent to many pockets or sacs; venation usually conspicuously raised below only, above usually concolorlous with lamina, densely to laxly reticulate, usually rather indistinct
7'Upper leaflets ovate; apex cuspidate to caudate; below sericeous, domatia a single (to many) sac(s); venation conspicuously raised on both sides, discoloured with lamina, densely reticulate, very distinct
8Upper leaflets ovate to obovate, 0.9-20 by 0.5-8.4 cm, if obovate either not punctate or base and apex asymmetrical
8'Upper leaflets elliptic to obovate, 1.6-3.9 by 0.5-1.2 cm, slightly asymmetrical, punctate
9Upper leaflets ovate to obovate, if obovate then punctate, basally and apically asym metrical, domatia many
9'Upper leaflets elliptic to obovate, rather symmetrical, not punctate, domatia absent or 1
10Rachis not (to slightly) winged (Fig. 33a, b). Upper leaflets ovate (to elliptic), symmetrical to usually basally asymmetrical; apex (obtuse to) acuminate to caudate; below glabrous to sericeous to subhirsute (Mindanao only), usually at least some leaflets longer than 7.5 cm; nerves marginally looped and joined, sometimes (leaflets ovate) less distinctly so in lower half
10'Rachis usually winged (Fig. 33b, c). Upper leaflets (elliptic to) obovate, apically and basally asymmetrical; apex (obtuse to) acute to acuminate (to cuspidate); below hirsute to (sub)sericeous, the (sub)sericeous leaflets always less than 7.5 cm long; nerves marginally looped and joined, but less distinctly so in the lower half
11Leaflets below somewhat differently coloured from above, brownish-greyish when dry, (usually) punctate; apex abruptly to gradually narrowing
11'Leaflets below very differently coloured from above, almost whitish when dry, not punctate; apex gradually narrowing
12Lobes of fruit about as long as high. Leaflets without domatia (then leaflets usually symmetrical) to many (then leaflets usually asymmetrical). Crest on petal scales (absent to) part of bifid scale apex (to clavate; Fig. 36h-k)
12'Lobes of fruit much longer than high. Leaflets without or with 1 domatium, asymmetrical. Crest on petal scales clavate (Fig. 36k)
13Rachis often (slightly) winged (Fig. 33a, b). Leaflets elliptic, usually symmetrical; apex abruptly (acuminate to) cuspidate, very apex obtuse (to acute); domatia absent or 1 sac
13'Rachis terete to flattened and broadened (to slightly winged; Fig. 33a, b). Leaflets ovate (to elliptic) asymmetrical; apex (obtuse to) usually gradually acuminate to caudate, very apex acute to usually mucronulate; domatia absent to many sacs (to pockets)