Monday, April 12, 2010

crested corydalis





It's hard not to notice the spring ephemerals, they're popping up daily. And then they're gone. POP! POOF! The bloodroot I blogged last week is already past flower.

Another yellow wildflower is blooming. This one is a bit challenging to ID. You can tell by the leaves that it's related to squirrel corn and Dutchman's breeches, but the flowers are much smaller and yellow.

According to my Peterson's Wildflower Field Guide (Roger Tory co-authored with Margaret McKenny. He did the illustrations.) there are three species of corydalis: C. flavula, C. aurea and C. micrantha. The differences are in the shape of the small flowers themselves. C. flavula (yellow corydalis) has a toothed crest on the upper petal; C. aurea (golden corydalis) does not; and C. micrantha (slender corydalis) has a straight or upturned spur, slight crest, no teeth.

Got that?

Any who. The one in the photo, the one growing along the North Cove Trail at Ijams, is yellow corydalis. It has a toothed crest.

Now you know in case it turns up on Alex Trebek's Jeopardy! under the heading "Almost Totally Too Much Information" for $1,000.

3 comments:

Rikki Hall said...

Hi Lyn,

The UT Herbarium only lists two Corydalis species in Tennessee, and one is an endangered species, C. sempervirens, which is pink and yellow. Of the ones you mentioned, only C. flavula is listed.

This could reflect a taxonomic change since the Peterson guide was printed, or it could be cause to consult Dr. Wofford!

Stephen Lyn Bales said...

Hey there Rikki!

How have you been?

Thanks, for your comment. Check out today's posting.

Lyn

Rikki Hall said...

I was hoping you had a new Tennessee record!