Creeping Buttercup. Ranunculus repens L. Achenes plump, dull, light-brown, nearly circular, diameter 3–4 or more mm.; beak more or less hooked, hem-like margin conspicuous. This species usually seeds very sparingly, but when once introduced, it looses no time in spreading by creeping stems. Introduced from Europe. Moist land; a rapid spreader by runners.
POPPY FAMILY. PAPAVERACEAE.
Fig 77. [Celandine. Chelidonium majus] L.
![[Celandine. Chelidonium majus]](#1525880611323293367_fig-077.jpg.id-8029892583409627808.wrap-0.html.html){kind=link}
Celandine. Chelidonium majus L. Yellow sap, yellow flowers; seeds dark brown to almost black, ovoid, 1.2–1.5 mm. long, with 10–12 curved vertical rows of small square depressions on each side; projecting from one side a prominent white or cream-colored ridge, irregularly wrinkled when dry. Introduced from Europe. Persistent.
MUSTARD FAMILY. CRUCIFERAE.
![[Yellow or Small Alyssum. Alyssum alyssoides]](#1525880611323293367_fig-078.jpg.id-4756140467318101769.wrap-0.html.html){kind=link}