erythromycin
- n an antibiotic (trade name Erythrocin or E-Mycin or Ethril or Ilosone or Pediamycin) obtained from the actinomycete Streptomyces erythreus; effective against many Gram-positive bacteria and some Gram-negative
erythronium
- n perennial bulbous herbs most of northern United States: dogtooth violet; adder's tongue; trout lily; fawn lily
erythronium albidum
- n North American dogtooth having solitary white flowers with yellow centers and blue or pink exteriors
erythronium americanum
- n eastern North American dogtooth having solitary yellow flowers marked with brown or purple and spotted interiors
erythronium californicum
- n California dogtooth violet with creamy white flowers sometimes yellow-tinged
erythronium dens-canis
- n sturdy European dogtooth with rose to mauve flowers; cultivated in many varieties
erythronium grandiflorum
- n dogtooth violet of western North America having bright yellow flowers
erythronium montanum
- n perennial herb having large white flowers marked with orange; found near the snow line in the northwestern United States