Globepodded hoarycress from roadside near Blue Sky, Hart Mt. National Antelope Refuge.......July 5, 1996.
Globepodded hoarycress is also known as Siberian mustard. It is a weedy perennial species with long, thick, spreading roots which give rise to new plants. The stems are branched above and range from 15-50 cm high and are covered with short, stiff hairs that give the plants a gray-green appearance. The stem leaves are linear to oblong, ranging from 1-6 cm long. The margins are sharply toothed and the bases of the upper leaves are heart-shaped and clasp the stem. Those leaves of the lower stems are short-petiolate.
The numerous racemes are short and dense at first, but elongate with age. The sepals are pubescent while the 4 white petals are each 2-3 mm long. The stems below the fruits are 6-10 mm long. The fruits are wide, ovoid silicles which are 3-4 mm long and are covered with short hairs.
Globepodded hoarycress is found in disturbed areas such as old fields, waste areas and along roadsides.
Globepodded hoarycress is a native of Eurasia. It may be found across much of the US and southern Canada.