权威例句
SNEEZEWEEDSneezeweedSNEEZEWEEDSneezeweed Conservation Bears FruitControl of Orange Sneezeweed with 2,4-DWestern sneezeweed (Helenium hoopesii) as a poisonous plantCertain ecological characteristics of orange sneezeweed.Toxicity of Helenium microcephalum (smallhead sneezeweed)Management of sheep on range infested with orange sneezeweedThe Potential Allelopathic Characteristics of Bitter Sneezeweed (Helenium amarum)Isolation of hymenovin from Hymenoxys richardsonii (pingue) and Dugaldia hoopesii (orange sneezeweed)Mammalian toxicity of helenalin, the toxic principle of Helenium microcephalum CD (smallhead sneezeweed).Isotenulin, C17H22O5, is a sesquiterpene lactone isolated from sneezeweed Helenium amarum. It crystallizes with two independent mol-...