ROCK CRESS

ROCK CRESS

Boechera dentata
MUSTARD FAMILY (Brassicaceae)

Identification

  • Flowering time - April, May, June
  • Rare in moist woodlands
  • Tiny flowers with 4 petals
  • Clasping leaves
  • Slender seed pods (siliques) slope upward
Click on each photo thumbnail to enlarge.

This native biennial, up to 18 inches tall, is often bent over (A). The oblong upper leaves, up to 2 inches long, clasp a thin, hairy stem (B). The tiny, white flowers with 4 petals are in a cluster (raceme) near the top of the stems.  The slender pod holding the seeds (silique) protrudes from the flower and slopes slightly upward when mature.  It has a circular cross-section.  See comments for differentiating from similar Sicklepod (Boechera canadensis).

Found in rich moist woods at Fontenelle Forest where this inconspicuous plant is rare and easily overlooked.  It has not yet been found at Neale Woods.  Flowering occurs from April to June.

The similar and more common Sicklepod (Boechera canadensis) has drooping siliques and non-clasping leaves.

This plant is also known as Short’s Rock Cress and, until recently reclassified, its scientific name was Arabis shortii.

The content of NatureSearch is provided by dedicated volunteer Naturalists of Fontenelle Forest who strive to provide the most accurate information available. Contributors of the images retain their copyrights. The point of contact for this page is: Roland Barth.