Lepidium Genus pepperweed Brassicaceae

  

Lepidium virginicum.David G. Smith.delawarewildflowers.org

Lepidium virginicum.David G. Smith.delawarewildflowers.org (Accessed 4/2014).

Lepidium is a genus of herbs, ours mostly annuals or biennials. 

Leaves alternate, often pinnately divided or toothed, initially in a basal rosette, stem leaves usually smaller than rosette leaves, often stalkless or clasping stem. 

Flowers white to greenish, radially symmetrical, small, petals 4 or lacking, sepals 4, stamens 2-6, ovary superior, 2-parted one ovule per segment, stigma head-shaped (capitate), style short to none; inflorescences of slender, erect racemes. 

Lepidium virginicum

Lepidium virginicum.fruit pods.Andrea Moro. Creative Commons.luirig.altervista.org.  (Accessed 4/2014).

Fruit dry, flattened, usually rounded, tip usually notched; a narrow septum forming a seam along the midline, at right angles to the width of the fruit, margins winged or sharply ridged (keeled); eventually splitting open to release seeds; fruit developing behind the flowering tip of each raceme.