Not Quite a Drought

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the narrow channel between Billy Goat B and Offutt Island; the river is really low – all the land in this picture should be underwater

After three weeks’ absence I eagerly hit the Billy Goat B trail yesterday, expecting to find a lot of asters and goldenrods.  What I actually found was a whole lot of nothing.

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that is one sad looking maple

OK, not really nothing, of course.  And although we are not yet officially in a drought, we are abnormally dry here.  As a result, the wildflower show is really muted.  Plants are going dormant early, their leaves wilted or brown (at least, I hope they’re going dormant, and not dying).  Many trees have lost their leaves already, and others’ leaves are turning brown

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this black walnut isn’t too happy, either

I saw plenty of white snakeroot, which is dominant at this time of year regardless of weather, a fair amount of wingstem, several different species of goldenrod, a few silverrods budding up, a few scattered asters, one plant in the genus Bidens, and that’s about it.

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look at all the brown plants behind this smooth aster

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that’s a sorry looking wingstem, but the bumblebee doesn’t seem to mind

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riverbank goldenrod says “what is drought?”

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calyces on bugleweed

Flower of the Day: Short’s Aster

Symphyotrichum shortii; Asteraceae (aster family)

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Some things to consider when trying to identify asters:

  • size of flower head
  • number of ray flowers
  • number of disk flowers
  • color of flowers (not as important as you may think)
  • shape and size of leaf, including the leaf base and leaf tip
  • leaf margin
  • arrangement of leaves on the stem and whether they’re more or less consistently sized
  • shape, size, color, and number of rows of phyllaries (bracts)
  • presence of glands
  • smoothness (or not) and color of stems

…you get the idea.  Actually this is a pretty general list, but with almost 90 species of Symphyotrichum found in the US (about two dozen in this area), you really have to pay attention to details.

All of which is to say, I’m not always sure I’ve correctly id’d all the asters I’ve been posting about.  But they sure are pretty.

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Flower of the Day: Frost Aster

aka hairy aster, awl aster; Symphyotrichum pilosum; Asteraceae (aster family)

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So far this year I’ve found 19 different species of aster (Symphyotrichum or Eurybia). I haven’t managed to identify them all, but they are clearly different from each other. This one, though, I’m pretty sure of.

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Note the characteristically hairy stem in the photo to the right.

Frost aster is another native found in eastern North America (from Texas through Quebec). It grows up to three feet tall in full sun and moist to dry conditions.  I found this specimen growing out of the cracks along one of my favorite rocky bluffs upstream of Carderock.

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Flower of the Day: Lowrie’s Aster

Symphyotrichum lowrieanum; Asteraceae (aster family)

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Lowrie’s aster is an eastern US native, ranging from New York to Georgia.  It’s a woodland plant that grows to three feet tall, with light blue (sometimes almost white) flowers.

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It’s distinguished from the more common heart-leaved aster (S. cordifolium) primarily by the winged petioles.

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