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.
Tulip Tree or Yellow Poplar Magnoliaceae Liriodendron tulipifera. Leaf: Alternate, simple, palmately veined, orbicular, 4-lobed with an entire margin, 4 to 8 inches long. Somewhat shaped like a tulip. Flower: Showy, but high in the tree, 2 1/2 inches long, with yellow-green petals and an orange corolla. Present April to June. Fruit: An oblong aggregate of samaras, deciduous at maturity.