The midrib is the principle vein that may be observed running along the duration of your lamina. This is typically linked to the petiole; A different word for the leaf stem. More than one Principal veins arising from just one issue, operating from base to apex. e.g. Liquidambar styraciflua https://quit-smoking-today62569.life3dblog.com/27345088/not-known-details-about-insomina-help