<![CDATA[Image RSS Feed for Image Collection 932 - yellow fieldcress (Rorippa sylvestris) - Selected Images only]]> http://www.ipmimages.org/collections/viewcollection.cfm?id=932 Yellow fieldcress (Rorippa sylvestris) (L.) Besser Origin
Native to Eurasia.

Appearance
R. sylvestris is erect to decumbent, perennial, herbaceous plant from about 6–24″ (15.2–61 cm) tall. Stems are glabrous and angular. R. sylvestris can often form dense stands from the abundant spreading rhizomes and vegetative offsets which can form rootlets when stems come into contact with moist soil.

Foliage
The alternate deeply lobed leaves are about 2–5″ (5–12.7 cm) long by about 2″ (5 cm) across. The leaves become smaller as they ascend up the stems. The leaves are glabrous with bluntly dentate, shallowly lobed, or undulate margins.

Flowers
The yellow flowers are held in racemes on the upper terminate stems. Each flower is about 0.333″ (0.85 cm) across. Flowers have four petals and four yellow-green sepals. It blooms for about 1.5 months beginning early to mid-summer.

Fruit
The fruit is a slender silique about 0.333″ (0.85 cm) long held on a slender pedicel about 0.3″ (0.76 cm) long. Fruits are straight to slightly curved and terminate in a short break. Each fruit contains several tiny seeds.

Ecological Threat
R. sylvestris is found in ditches, roadside embankments, riverbanks, waste grounds, and gardens.

http://www.luontoportti.com/suomi/en/kukkakasvit/creeping-yellowcress
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Fri, 29 Mar 2024 07:30:48 -0400 Fri, 29 Mar 2024 07:30:48 -0400 http://Images.bugwood.org/ <![CDATA[yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1196217 yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1196217 <![CDATA[yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374745 yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374745 <![CDATA[yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374746 yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374746 <![CDATA[yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374747 yellow fieldcress Rorippa sylvestris]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374747