Plant of the day: sticky sandspurry

Spergularia macrotheca

On the upper edge of a salt marsh, pale purple flowers grow low to the ground. This is sticky sandspurry, or Spergularia macrotheca. There are several different species of spurrys in the area, and all are very similar. To identify S. macrotheca I had to get out my hand lens and look close at the tiny seeds. In this species, each seed is surrounded by a narrow, papery halo (or “wing”).

With its five pale petals surrounding cheery yellow stamens, sticky sandspurry can be found along the Pacific coast states up to Canada and southeast Alaska. The plant earns its name by being covered with short, sticky hairs. Clustered leaves, rising from a swollen spot in the stem, give a clue that it’s in the Caryophyllaceae family.

It prefers to grow in wet places, often near saltwater, but it also can be found by freshwater seeps, springs and vernal pools–and in non-wetlands as well.

Notice the swollen stem at the leaf nodes


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