Casearia grewiifolia var. gelonioides

In the Au Tropical Herbarium (CNS – Cairns), checked with the binocular microscope distinctive foliage features of another foliage specimen i gathered off this sapling tree the other day;
including has:
• hairy triangular stipules (caducous) both sides of where the petiole joins the stem coloured green turning black before early falling off;
• leaves' laminas oil dots and oil streaks;
• toothed leaves' laminas;
etc.

Asked for corroboration – confirmation from colleagues here, eg. Stuart Worboys, Frank Zich and so on, referred me to re-check the stipules including compared to online herbaria specimens of Casearia grewiifolia;
and compare to also lowland swamp forest dwelling tree species Bridelia insulana for the purpose of an alternative hypothesis to disprove – trees of which i know well for many years thus i know this does not identify to .
Bridelia insulana does not have leaves' laminas with oil dots–streaks and usually has leaves' laminas' marigins smooth not toothed .

Au Tropical Rainforest Plants information system and multi–entry–point botanical (data matrix) key features selected:
"
• Habit (at fertile stage): Tree (over 6 m tall, usually single stem)

Leaf characters:

• Leaves whether simple or compound: L3 - simple
• Leaves arrangement: L5 - alternate or spirally arranged
• Stipules or stipular scars - present or not: L9 - present
• Oil dots visible or not: L12 - visible with a lens
• Leaf length-breadth ratio: L15 - 1.5 to 4.0
• Leaf margin: L18 - toothed
• Intramarginal vein (not applicable in longitudinally parallel venation): L21 - absent
• Leaf venation: L25 - 8-20 on each side of the midrib
• Lateral vein angle: L33 - 30-60 degrees
• Undersurface smooth or not: L36 - smooth
• Undersuface colour: L39 - paler green than the upper surface
• Petiole length: L42 - short less than 0.2 of the leaf blade
• Petiole winged or not: L45 - not winged
• Pulvinus present or absent: L47 - absent
• Shape (leaf or leaflet of compound leaves): L62 - oblong
• Apex shape (leaf or leaflet of compound leaves): L74 - acuminate
• Base shape (leaf or leaflet of compound leaves): L84 - obtuse
"

Ref' URL : https://apps.lucidcentral.org/rainforest/identity/key.html
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