Betula occidentalis Betula occidentalis Betula occidentalis, the water birch or red birch, is a species of birch native to western North America, in Canada from Yukon east to western Ontario and southwards, and in the United States from eastern Washington east to western North Dakota, and south to eastern California, northern Arizona and northern New Mexico, and southwestern Alaska. It typically occurs along streams in mountainous regions. It is a deciduous shrub or small tree growing to high, usually with multiple trunks. The bark is dark red-brown to blackish, and smooth but not exfoliating. The twigs are glabrous or thinly hairy, and
Striped bark scorpion phosphatase, and phospholipase A. While a "C. vittatus" sting is not typically deadly, and signs such as swelling can be treated using an ice pack, several other species from the genus "Centruroides" can have a deadly sting and medical attention should be sought immediately. Striped bark scorpion The striped bark scorpion ("Centruroides vittatus") is an extremely common scorpion found throughout the midsection of the United States and northern Mexico. It is perhaps the most frequently encountered scorpion in the U.S. A medium-sized scorpion that is rarely longer than 70 mm (up to around 2 3/4 in), the striped bark scorpion