Mikania scandens (L.) Willd.

Common name:  climbing hempvine

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Mikania is the only twining vine in the Asteraceae native to central
Texas. This plant is twining around itself.

Mikania scandens heads are discoid, with four florets per head. Note the long style branches characteristic of its tribe (Eupatorieae).  
Note the deltiod leaves. A hairstreak butterfly visiting Mikania scandens
A crab spider is well-camouflauged in Mikania scandens