Longleaf Primrose-Willow - Ludwigia longifolia

Long-leaved Willow Primrose is a small upright shrub usually growing 1-2 m tall, but it can occasionally
reach up to 3 m in height. The stems are hairless, square in cross-section, and usually also slightly
winged. The long and narrow leaves (5-35 cm long and 5-25 mm wide) are stalkless with pointed
tips and entire margins.