Submerged in shallow pond. Sunken Gardens Special Interest Area, Medicine Bow Mountains, Albany County, WY.
Ruler graduations in mm. This is a new disjunct location and the most southern for this species in the Rocky Mountains.
North Woods, day 12: https://inaturalist.org/calendar/lincolndurey/2020/8/27
North Woods, day 12: https://inaturalist.org/calendar/lincolndurey/2020/8/27
larger leaves and stipules than P. gramineus
Stumped on the ID - free stipules, long petioles, a huge mid vein, weakly serrated leaves, about 9 veins. Ornamental?
Andante stipules ~10mm
Blunt leaf tips
Growing in dense patches
Pond weed
Blooming?
P. spirillis in top left.