File:2016.04.11 09.18.32 DSC03252 - Flickr - andrey zharkikh.jpg

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Second Rockcress (Boechera retrofracta syn. Boechera holboellii var. secunda), Mustard family (Brassicaceae). Grown from seeds, Cottonwood Heights, Utah.

Descriptions of Boechera retrofracta and Boechera puberula are very similar, except few subtle details. The basal leaves are usually dentate in B.p. and entire in B.r.; the pedicels of fruits are at right angle to the stem and curved down in B.p. and reflexed abruptly in B.r.; the siliques are longer and appressed closer to the stem in B.r.; the fruits are pubescent in B.p. and glabrous in B.r.; the seeds are 1.4-2.0 mm long in B.p. and 1.0-1.4 mm in B.r. Each feature individually is insufficient to distinguish them reliably, but in combination, they are quite convincing.
Date
Source 2016.04.11_09.18.32_DSC03252
Author Andrey Zharkikh from Salt Lake City, USA

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by andrey_zharkikh at https://flickr.com/photos/33497841@N02/29592700954. It was reviewed on 8 July 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

8 July 2017

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Date/TimeThumbnailDimensionsUserComment
current20:23, 8 July 2017Thumbnail for version as of 20:23, 8 July 20173,271 × 4,060 (2.17 MB)Josve05a (talk | contribs)== {{int:filedesc}} == =={{int:filedesc}}== {{Information |Description=Second Rockcress (Boechera retrofracta syn. Boechera holboellii var. secunda), Mustard family (Brassicaceae). Grown from seeds, Cottonwood Heights, Utah. Descriptions of ''Boech...

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