arrowleaf groundsel: perennial with sharply toothed triangular leaves on leafy stems bearing a cluster of yellow flower heads; moist places in mountains of western North America
vascular plant: green plant having a vascular system: ferns, gymnosperms, angiosperms
quillwort: any of several spore-bearing aquatic or marsh plants having short rhizomes and leaves resembling quills; worldwide except Polynesia