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Tiny rosette with white, 4 split-petal flowers

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Quintus_Twig blog photos
Joined: 12/09/2009
Location: Long Island
Posts: 131
Posted: Mar/09/2010 7:59 PM PST

I collected these tiny rosettes in February thinking they were seedlings. Now they're blooming on a very long stalk. The flowers have four pairs of split petals--very much like a draba, six yellow stamens, and an inferior or sub-inferior pistil. I can't tell how many carpels there are. The rosette itself is about 3/4 of an inch to an inch in diameter with some division in the leaf, but I can't tell what kind of division since the leaves are so small. It's a winter annual, I think.

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Quintus_Twig blog photos
Joined: 12/09/2009
Location: Long Island
Posts: 131
Posted: Mar/16/2010 9:32 AM PST

Here's a good close-up of one of these growing between bricks on a patio.

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Rashell blog photos
Joined: 9/17/2007
Location: Acton, Ca
Posts: 4230
Posted: Mar/16/2010 6:34 PM PST

looks like a chickweed?

http://www.ontarioweeds.com/weed.php?w=CERVU
Quintus_Twig blog photos
Joined: 12/09/2009
Location: Long Island
Posts: 131
Posted: Mar/16/2010 6:36 PM PST

If the flowers did not have split petals, I would say pepperweed, peppergrass, or peppercress. I can count three or four long-petioled basal leaves, and the rest are starting to form lobes. Are there Drabas like that?
Rashell blog photos
Joined: 9/17/2007
Location: Acton, Ca
Posts: 4230
Posted: Mar/16/2010 7:01 PM PST

Draba genus has 350 species.

http://www.ovrghs.ca/articles/Genus/Draba.htm

Maybe Draba rupestris?
Draba verna also looks a bit liket it. the images on the net i've seen so far are so tiny I can't tell.
Quintus_Twig blog photos
Joined: 12/09/2009
Location: Long Island
Posts: 131
Posted: Mar/16/2010 7:04 PM PST

Rashell,
Sorry, I missed your post as I was typing. I thought that too at first, but there are four notched petals, and it has radial symmetry, so it's definitely a brassica.

I just double checked my sources, and realized I had made a mistake in my last post. Field Pennycress, which I accidentally called field peppercress in the previous post, does have notched petals. It might also be hoary cress. Not peppergrass. Any help?
Rashell blog photos
Joined: 9/17/2007
Location: Acton, Ca
Posts: 4230
Posted: Mar/16/2010 7:12 PM PST

I did see hoary cress but haven't seen a seedling/floret like yours. I like trying to ID weed so believe me I'll keep looking until someone IDs it.
Rashell blog photos
Joined: 9/17/2007
Location: Acton, Ca
Posts: 4230
Posted: Mar/16/2010 7:44 PM PST

my search keeps leading me to the herbaceous draba verna. sorry


the site describes the verna.

http://www.missouriplants.com/Whitealt/Draba_verna _page.html
Quintus_Twig blog photos
Joined: 12/09/2009
Location: Long Island
Posts: 131
Posted: Mar/16/2010 7:53 PM PST

Great website. I think your website is right. I'll have to look closely for hairs.
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