Equatorial Rain Forrest Roses

Just got back from a trip in Papua New Guinea Islands and found these growing beside Equatorial rain forrest, Temps were in the 77 to 86 F range with a consant humidity level of 80%. These values occurr almost 365 days of the year and as you can see not one sign of any fungus problems.

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Warren,

They appear to be thornless. Was that the case?

Hello stranger, nice holiday. Now on a serious note. Any idea what the rose is or maybe Warren. Is there a bit of ‘tea’ in it ?