Learner's definition of MANIFEST. [more manifest; most manifest] formal. 1. : able to be seen : clearly shown or visible. Their sadness was manifest in their faces. His love for literature is manifest in his large library. There was manifest confusion in the streets. The truth was manifest [=(more commonly) obvious] to everyone but me.
From Wikipedia, the free encyclopedia. Convolvulus arvensis (field bindweed) is a species of bindweed in the morning glory family (Convolvulaceae), native to Europe and Asia. It is a climbing or creeping herbaceous perennial plant growing to 0.5â2 m high. There are two varieties: Convolvulus arvensis var. arvensis.
Common Weed Pollens. Ragweed produces the most common weed pollen in the United States. Different varieties of the weed thrive in many geographic areas and include false, giant and short types. Other weeds with heavy pollen distributions include sagebrush, tumbleweed, cocklebur, marsh elder and lamb's-quarter.