July 16, 2009
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Southeastern, New Hampshire
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Difficult to tell Rubus species apart. At first I thought it
might be the Allegheny Blackberry (Rubus allegheniensis) or the
Upland Blackberry (Rubus pergratus), but the Black Raspberry
has some key differences:
- The Black Raspberry fruit itself is more round (similar width and height)
with a deep, hollow space in the top when removed from the plant. The Blackberries
are taller than they are wide. In this case, the fruit looks more round like a Black
Raspberry.
- The stems of the Black Raspberry plant often have a blue-gray
tinge to them. While the stems of the Allegheny Blackberry have a redish-brown tinge.
- The underside of the leaves of the Black Raspberry have a soft gray or white fuzz.
- The fruit of the Black Raspberry often ripens after different rates so that one
often sees unripe white or red fruit along with some ripe black fruit.
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