Crupina Vulgaris Research Paper

Crupina vulgaris Crupina vulgaris is a class A federal noxious weed under the asteraceae family and dicot group, and is part of the spermatophyta subdivision that produces seeds (Natural Resources Conservation Service 2016). C. vulgaris is commonly known as Bearded creeper or Common crupina. It is a winter annual weed that can grow 1 m or 1 to four feet tall (Crupina vulgaris 2015) with three sterile and two fertile flowers (Crupina vulgaris (bearded creeper) 2011) pink to purple in color. C. vulgaris overwinters as a basal rosette with tooth margined leaves and develops a stem with short hard pines (Swearingen 2016). C. vulgaris produces fruits that are black and brown, cylindrical in shape with stiff barbed bristles that extend from the top of the fruit. Through the process of sexual reproduction angiosperm …show more content…
The growth of the root occurs above the zone of cell division where cells elongate and differentiate (Reece 2014). The zone of cell division continues to produce cells above the root cap allowing for the continuous growth of the root. The roots are composed of xylem and phloem tissues covered by vascular tissue encased in ground tissue and epidermis (Reece 2014). The vascular cylinder contains xylem which transports water from the root to the leaves and phloem tissue that enables the transportation of glucose from the leaves to the rest of the plant. Eudicot roots will display a cross of xylem with phloem in between the lobes and monocot roots display a vascular cylinder with a core of parenchyma surrounded by xylem and a circle of xylem and phloem (Reece 2014). The shoot has a dome shaped apical meristem that produces new cells through cell division. Leaf primordia develop on the sides of the apical meristem with two auxiliary buds that produce branching in the plant when the primary apical meristem is