Here's a couple of shots of the colonizer that spreads from dunes onto bare sand.  Previous north limit was Indian River County.  Now spotted as far north as Patrick AFB; also Indian Harbor Beach and Melbourne Beach.  It has a worldwide distribution in the tropics.  You can see it in Hawaii or Queensland, but not New South Wales.  

They're the pointy-leaved little plants.  Sometimes they grow in lines, connected by underground stems.

 

Those do look familiar; pretty sure I've seen those in quite a few spots around the world. So, this is a good, thing, right? More plants to hold the dune together? Or are they considered invasive?

They're native to Florida.  A sign that our beaches are tropical.  Here's another photo from October 2014, Vero South Beach

 

Edited: 12/16/2016 at 07:32 AM by ww

Look like they would do a number on barefeet, dune walkers beware!

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this wouldn't be a sign that the climate is getting warmer would it?

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"I remember South Africa in the late 70's, sleeping on the beach at J-bay, smoking ganja with the blacks. On weekends we'd go to the pub in East London to drink beer and fight with the Afrikaners. They liked to fight, I liked to fight. It was a good time"

The leaves are a bit prickly and sharp-pointed but not really nasty (I haven't done the foot test).

They've likely been in Brevard for a long while, but not collected.  

But yes, it's possible that the Brevard plants are a fresh range expansion.