Publication: Proc. Amer. Acad. Arts. 8: 391. 1872.
selected vouchers: WTU
Notes: FNA21: "Madia exigua occurs in seasonally dry situations in much of western North America outside the warm deserts. Morphologically, M. exigua is somewhat similar to Hemizonella minima, which (unlike M. exigua) has subumbellate arrays of heads and obcompressed, sparsely hairy ray cypselae."