The veins of a leaf can be arranged in three different ways. In pinnate leaves the veins all branch off the main vein which runs the length of the leaf. In palmate leaves the veins radiate outward from the base of the leaf like fingers spreading out from the palm of a hand. In parallel-veined leaves, the veins all run parallel from the base of the leaf to the tip. Most leaves have a petiole or a central stalk by which they are attached to the stem. Sessile leaves have no central stalk and are attached directly to the stem. Learn more about Botany.
Level Green, Pennsylvania; CDP: Country: United States: State: Pennsylvania: County: Westmoreland: Population â¢ Total: 4,020: Time zone: Eastern (EST) â¢ Summer : EDT
East Pittsburgh is a borough in Allegheny County, Pennsylvania, about 11 miles (18 km) southeast of the confluence of the Monongahela and the Allegheny rivers at Pittsburgh. The population in 1900 stood at 2,883, and in 1910, at 5,615. As of the 2010 census, the borough population was 1,822, having fallen from 6,079 in 1940.