Pulmonary blood pressure is normally a lot lower than systemic blood pressure. Normal pulmonary artery pressure is 8-20 mm Hg at rest. If the pressure in the pulmonary artery is greater than 25 mm Hg at rest or 30 mmHg during physical activity, it is abnormally high and is called pulmonary hypertension.
Plant Types. Tropical hibiscus (Hibiscus rosa-sinensis) are evergreen, or shrubs that keep their leaves all year. On the other hand, hardy hibiscus, members of the genus Hibiscus with more than 200 species, are deciduous. Their leaves die off in winter. They have heights up to 15 feet and widths from 4 to 8 feet.
Two hibiscus are native to Hawaii, but only one has been named the official state flower: Hibiscus brackenridgei. This hibiscus grows as either a shrub or a tree and produces pure yellow flowers with red veining near the center and a prominent yellow stamen. It grows to 15 feet tall and 8 feet wide in USDA plant hardiness zones 10a through 11.