Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
hŏlĕrācĕus (ŏlĕr-), a, um, adj. [holus], resembling herbs, vegetable: frutex, Plin. 26, 8, 53, § 85.
ŏlĕrācĕus, v. holeraceus, etc.