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I'm not very good at german so I can have missed a letter or two, but here we go ..

"Cytisus nigricans
Schw?rzlicher Cohnenbaum,
aus Oesterreich."

The name in german. Something like black tree.
Last row says it's from Austria.

"Fr. Cytise noiratre [french?]
Ein ? F. hoher Strauch. Vermehrung
durch den Saamen."

I have no idea about this :)