Dog tail is careless: This kind of grass is in a country is everywhere, the farmer also is the most irritated it, even if is to use herbicide, cross paragraph of time or chairman to come out. It is the wild cockscomb that we often say, small companionate scarcely of the country is unfamiliar, formal name feather cockscomb, its seed is called feather cockscomb child, its are tender cauline leaf is delicate potherb. The root of balloonflower is beautiful: Representing the love of lasting love and all up. Flower of the root of balloonflower left to represent a kind of mental state that all answering had taken to look on green road at the same time, make do not have regret. Root of the root of balloonflower is officinal, contain glucoside of black of the root of balloonflower, Wild Qiu Ma, by common Yu Lu, between moorland and field, its cauline skin can weave the spin material such as the rope of gunny-bag, rub, shoe that make up hemp. Barnyard grass also cries " be defeated child " , it is the malign fireweed in the rice field, also be equestrian flocks and herds a kind raise raw material well, nutrient value is higher also, root and seedling but officinal, can hemostatic, advocate treat traumatic haemorrhage.