Looks like it could be one of the Heteropanax but I can find few photos. Janet mentioned H. fragrans and I see H. nitentifolius looks similar. Just a guess but it looks more consistent than anything I've looked at so far. Had a quick look through these that Janet posted earlier. When I came across Megalopanax rex I thought that had to be it because it sounded prehistoric! HA HA HA. Time for me to let this one rest. I did have one more question about where these plants are. Are there many of the mature ones like a grove and are there intermediate sizes. I ask this because I wonder if these may be monocarpic. Grow, Bloom, Die in a year or two.
Subclass Dicotyledonae; Crassinucelli. Dahlgren's Superorder Araliiflorae; Araliales. Cronquist's Subclass Rosidae; Apiales. Takhtajan's Subclass Rosidae; Aralianae; Araliales. Species 700. Genera 49; Anakasia, Apiopetalum, Aralia, Arthrophyllum, Astrotricha, Boninofatsia, Brassaiopsis, Cephalaralia, Cheirodendron, Cromapanax, Cuphocarpus, Cussonia, Delarbrea, Dendropanax, Eleutherococcus, Fatsia, Gamblea, Gastonia, Harmsiopanax, Hedera, Heteropanax, Hunaniopanax, Kalopanax, Mackinlaya, Macropanax, Megalopanax, Merrilliopanax, Meryta, Motherwellia, Munroiodendron, Myodocarpus, Oplopanax, Oreopanax, Osmoxylon, Panax, Pentapanax, Polyscias, Pseudopanax, Pseudosciadium, Reynoldsia, Schefflera, Sciadodendrom, Seemannaralia, Sinopanax, Stilbocarpa, Tetrapanax, Tetraplasandra, Trevesia, Woodburnia.
