- Salix sitchensis Sanson ex Bong. (plants.sc.egov.usda.gov)
Willow Family (Salicaceae). Salix sitchensis is a large shrub or small tree, six to twenty-five feet high. The leaves are alternate, oblonceolate or narrowly ovate, two to five inches long, and usually sharp-pointed. The flowers appear before or with the leaves, on short leafy shoots, males are five centimeters long, and the females are eight centimeters long (Pojar & MacKinnon 1994). The bark is smooth, slightly furrowed, and scaly.
- Calcium (Wikipedia)
Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth’s crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx “lime”, which was obtained from heating limestone.