ID of S.Fla shrub

[Dan Sorensen]

I just visited South Florida and saw a shrub that I believe is native there 
that I would appreciate help identifying.

It is shrubby with dark green leaves about 1.5" long.  They are similar to 
kumquat leaves but are quite stiff and have a very sharp needle point on the 
end.  The fruit is a smooth orange thick-walled capsule again about the size of 
a "Meiwa" kumquat.  The interior has a dark orange pulp suspended from the top.
The surface of the pulp is covered with several 1/4" dark brown flat seeds. 

I didn't see it in bloom so I have no idea what the flowers are like.  Any help
will be appreciated.

I also saw an Atala butterfly.  It was once considered quite rare.  Is it still 
or has it recovered?  I got a picture of it so I'm pretty sure of the ID.

Dan Sorensen  dsorense at psupen.psu.edu