cudweed

cud +‎ weed, or perhaps an alteration of cottonweed or cutweed (referring to its application to cuts and chafings).

cudweed (countable and uncountable, plural cudweeds)

1. Any of many of species of flowering plants in family Asteraceae:
   1. Gamochaeta, a plant genus with species in North and South America
   2. Gnaphalium, a plant genus with species in Eurasia and the Americas
   3. Pseudognaphalium, a plant genus native to North America
   4. Filago, a plant genus in Eurasia and North America
   5. Euchiton, a plant genus native to Australasia and the Pacific
   6. Helichrysum, a plant genus occurring in Africa, Australasia and Eurasia.
2. Cudbear (Lecanora tartarea)

• cudweed on Wikipedia.Wikipedia
• cudweed at OneLook Dictionary Search
• cudweed in The Century Dictionary, The Century Co., New York, 1911