Northern Catalpa at Fort Smallwood Park, Maryland (5/23/2012). Photo by Bill Hubick. (MBP list)
Northern Catalpa blooming in Montgomery Co., Maryland (5/27/2014). Photo by Elizabeth Miller. (MBP list)
Northern Catalpa in Anne Arundel Co., Maryland (6/5/2013). Photo by Bill Harms. (MBP list)
Northern Catalpa in Howard Co., Maryland (5/28/2010). Photo by Bill Harms. (MBP list)
Northern Catalpa in Anne Arundel Co., Maryland (8/21/2012). Photo by Bill Harms. (MBP list)
Northern Catalpa growing in Montgomery Co., Maryland (5/27/2014). Photo by Elizabeth Miller. (MBP list)
A Northern Catalpa in Anne Arundel Co., Maryland (2/18/2017). Photo by Bill Hubick. (MBP list)
A Northern Catalpa trunk in Worcester Co., Maryland (1/1/2013). Bark is a key distinguishing characteristic between Northern and Southern. Sibley describes Northern as "furrowed" and Southern as "scaly". Photo by Bill Hubick. (MBP list)
A Northern Catalpa twig in St. Mary's Co., Maryland (3/31/2013). Photo by Bill Hubick. (MBP list)
Northern Catalpa in Cecil Co., Maryland (10/30/2016). Photo by John Hall. (MBP list)
Northern Catalpa (seeds) in Anne Arundel Co., Maryland (11/10/2016). Photo by Bill Hubick. (MBP list)
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