Floral morphology in Claytonia: How much variation is ‘normal’ for a species?

Ok, so you may remember this recent post, where I asked for interested people to send me pictures of as many flowers as they could photograph…

The premise is simple: How much variation is considered the ‘normal’ or ‘typical’ amount of variation for a species? How much is typical in terms of petal shape, size, and color for individuals in a given population of tuberous perennial Claytonia?! My collaborators and I have noticed quite a bit of variation among populations of different species, but what may be even more interesting is the amount of variation within populations. It might bend your brain the next time you kneel down and take a look around at the tuberous perennial Claytonia blooming in your area (right now!!!)… Better yet, take a picture of 50-100 different flowers from directly facing the flowers (trying to center the gynoecium in the flower as best as possible). Compare all your photos, or send them my way. We’ll get to the bottom of this!

Enter stage left as ‘proof of concept’, a member of the C. “peirsonii” complex from the southern Sierra Nevada — all of the below pictures are from different flowering individuals within a single population, taken on the same day within about 45 minutesIMG_5421 IMG_5418  IMG_5404Note the visitors above: an ichneumonoid wasp (likely a parasitoid braconid) on the left, and a soft-winged flower beetle (Melyridae) on the right. We saw these same beetles last year, and I’ve also mentioned them in the ‘who’s pollinating Claytonia?‘ series — special thanks to Dr. Emile Fiesler for help with the identifications!IMG_5432IMG_5398IMG_5382IMG_5387IMG_5324IMG_5331IMG_5396The variation is crazy, right?!

IMG_5340I really need to get a new ‘cutest Claytonia‘ contest going soon…

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What are those stamens doing?

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(Above) How weird is that?! The filaments curl back onto the petals and the anthers shed pollen at the same time that the stigma is receptive in some species of tuberous perennial Claytonia!

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(Above) In others, the filaments begin to curl back when the anthers start shedding pollen, with the stigma become receptive shortly thereafter. Excellent!

(Below) In this species, the filaments curl back and the stigma becomes receptive after most of the pollen has seemingly been released. Gnarlatron!

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(Below) And still in others it seems like the filaments don’t reflex much toward the petals at all. Whoa!

5But what does it all mean?! That is a good question… I’ll have to get back to you on that one.

😉