Injection of the. right vertebral artery demonstrated retrograde flow. into the left vertebral artery (Fig. 1). Thoracic. aortography failed to delineate any obstruction in. the proximal segments of the great vessels. CASE II: ].
Yellow poplar or tulip poplar is the tallest hardwood tree in North America with one of the most perfect and straight trunks in the forest. Yellow poplar has a very unique leaf with four lobes separated by rounded notches. The showy flower is tulip-like (or lily-like) which supports the alternate name of tulip poplar.ellow poplar or tulip poplar is the tallest hardwood tree in North America with one of the most perfect and straight trunks in the forest. Yellow poplar has a very unique leaf with four lobes separated by rounded notches. The showy flower is tulip-like (or lily-like) which supports the alternate name of tulip poplar.
Types of Poplar: Poplar wood is considered a hardwood by species, but this can be somewhat confusing as it is typically softer than pine, a common softwood. In most instances, poplar (or should we say what is sold as poplar in home centers) is actually the wood from the tulip tree.taining poplar wood is another matter entirely. In its native form, poplar tends to take stain in a very blotchy manner. It is imperative that all surfaces that will be stained be prepared properly with a couple of coats of a pre-stain wood conditioner.