Fairly certain this is oxyccocos but I don't have good experience with this and was confused about different plants in the same area seeming to have noticeably different leaf sizes and bracteole size and shape. Those posted in an accompanying observation.
This plant:
Macrocarpon:
FNA - often ascending; leaves 5-18 mm long, narrowly elliptic, slightly revolute; bracteoles 2, green 1-2 mm wide; berry 9-14 mm
MNW - erect to ascending; leaves 1/3-2/3 in long, oblong-elliptic, rounded, slightly revolute; bracteoles; tiny bracteoles at or above middle of stalk; berry 1/3-2/3 in
MIF - prolonged stems beyond floweres/fruit; leaves rounded, bracteoles green (rarely red) .8-2.7 mm wide
Oxycoccos:
FNA - trailing; leaves 3-10 mm long, ovate, strongly revolute; bracteoles 0-5, red <1mm wide; berry 6-12 mm
MNW - leaves 1/4-1/3 in long, oblong-elliptic, tapered, strongly revolute; tiny bracteoles at or below middle of stalk; berry 1/4-1/2 in
MIF - flowers/fruit appearing terminal; leaves acute; bracteoles red >0.8 mm wide
Alluvial area below. Is it wetland¿
It was near the New Leaf.