Yellow or Small Alyssum. Alyssum alyssoides L. Flowers yellow; fruit nearly circular; seeds rich yellowish brown, about 1.5 mm. long, nearly straight on one edge, flattened slightly, convex on each side or one side flat, surrounded by a thin wing. Cotyledons accumbent. Introduced from Europe.
Fig 79. [Yellow Rocket. Winter Cress. Barbarea vulgaris] R. Br. (Barbarea Barbarea L. Mac. M.)
![[Yellow Rocket. Winter Cress. Barbarea vulgaris]](#1525880611323293367_fig-079.jpg.id-5544457171187176220.wrap-0.html.html){kind=link}
Yellow Rocket. Winter Cress. Barbarea vulgaris R. Br. (Barbarea Barbarea L. Mac. M.) Seeds roughened, dull, light brown, irregularly flattened, broad oval, circular-oval, circular-oblong, cotyledons accumbent. Introduced from Europe.
Fig 80.[Hoary Alyssum. Berteroa incana] (L.) D. C.
![[Hoary Alyssum. Berteroa incana]](#1525880611323293367_fig-080.jpg.id-8054144380074947086.wrap-0.html.html){kind=link}
Hoary Alyssum. Berteroa incana (L.) D. C. Flowers white; pods oval, flattened; seeds reddish brown, circular, broad oval, or rhombic in outline, about 1.5 mm. in diameter, flat on one side showing a slight groove, the other side convex, irregular owing to pressure in the pod. Cotyledons accumbent. Introduced from Europe. A thrifty weed of the mustard family.