Among the candidates are Russian dandelion and guayule, a desert shrub found in the south-western American states and in Mexico.
俄罗斯的蒲公英和一种生长在美国西南部各州和墨西哥的沙漠灌木的银胶菊是候选品种之一。
2
Desert plants, however, tend to be slow growing-guayule takes two years to mature.
然而，沙漠植物往往生长缓慢——银胶菊要两年才能成熟。
3
One proposal is to use guayule, a shrub that grows in arid regions and produces rubber that is free from allergenic proteins, which makes it useful for items such as surgical gloves.