Plant ID forum: Lithospermum officinale or latifolium?

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Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Sep 15, 2015 7:45 AM CST
I found this growing in a flower bed last year and left it because the first flush of leaves is attractive and to see what it turned out to be. It survived the winter so is obviously perennial. I finally hit the books and figured it is a Lithospermum. I'm leaning towards L. officinale but not sure if it could be L. latifolium (any other suggestions welcome). Here are some pics, unfortunately I don't have any of the flowers (which are not, from memory, yellow, which eliminates several others), it is at the "nutlet" stage now:

Thumb of 2015-09-15/sooby/8e7b84

Thumb of 2015-09-15/sooby/2de9e4

Thumb of 2015-09-15/sooby/28eef9

Thumb of 2015-09-15/sooby/6aaa5a

Thumb of 2015-09-15/sooby/552d41

It does not match Buglossoides arvensis, which is what comes up in the ATP database for L. officinale, nor does the Catalogue of Life consider them synonyms (and the nutlets are supposedly different) so I have started a separate thread asking about that on the Plant Database forum. Thanks for any help.
Name: Rick R.
near Minneapolis, MN zone 4a
I was one of the first 300 contributors to the plant database! Garden Sages The WITWIT Badge Garden Photography Region: Minnesota Plant Identifier
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Leftwood
Sep 15, 2015 2:11 PM CST
If you can trust your memory that flowers were not yellow, and yet, apparently, don't know what color they are - you can look here if it is a lithospermum:
http://michiganflora.net/genus.aspx?id=Lithospermum

At the bottom it differentiates your two suspect species. I can't see the underside of the leaves in your pics, but the pubescence on the up sides would be "mostly somewhat ascending".
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Image
sooby
Sep 15, 2015 2:54 PM CST
Leftwood said:If you can trust your memory that flowers were not yellow, and yet, apparently, don't know what color they are .


The flowers are nearer to white/greenish. One other reference I saw said all the other Lithosopermum that may be encountered would be obviously bright yellow which is why I made that comment because they were definitely not bright yellow. Sorry, I wasn't very clear. Thanks for the link, I found a similar key also but I can't check out the pubescence until tomorrow because it's in a different garden. Thanks again.

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