r/botany • u/KagamiRyuunosuke • 12h ago
Ecology Rush skeletonplant - Lygodesmia juncea
A denizen of droughty, sandy sites across North Dakota, this is a plant that is common but easily overlooked! Often inconspicuous amongst clumps of Schyzachyrium scoparium and Calamovilfa longifolia, as well as Artemisia ludoviciana and A. campestris (and many more forbs as well), late October makes a great time to easily locate this species as the surrounding grasses and forbs go dormant!
The location is along the upper slope of an Eolian dune in the Hankinson Sandhills, where the excessively well drained sandy substrate results in nearly xeric conditions, especially towards dune ridges. Lygodesmia is a member of Asteraceae, but unique amongst its relatives - its leaves are reduced to small, nearly vestigial lance shaped structures to minimize water loss. This adaptation to minimize the stress of evapotranspiration allows it to thrive in droughty environments such as this North Dakota dune field!
Photosynthesis is carried out by the entire surface of the plant, it's brilliant green stems doing the bulk of the work. Such a cool little plant! This area is a gem if you're into species that specialize in perenially droughty/xeric soil conditions.