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Punctate or Black-stem Rabbitbrush, Chrysothamnus paniculata

Something that is punctate is marked in some way. In the Punctate Rabbitbrush, the markings are black bands made on the stems by fungi or insects. These bands are an identifying feature.

A broadly spreading green Rabbit Bush
Black-Stem Rabbitbrush, Chrysothamnus Paniculata
Asteraceae

Black-Stem Rabbitbrush, Chrysothamnus Paniculata
Asteraceae

Rabbitbrush is one of several plants in the desert that a person seems to pass and be unable to identify. Note the dense leaves. Rabbits love the shade and the cover. Rabbitbrush produces brilliant yellow flowers when in bloom.