Flowering plant serve to protect the sporophylls and to form an envelope attractive to pollinators. The individual members of these surrounding structures are known as sepals and petals (or tepals in flowers such as "Magnolia" where sepals and petals are not distinguishable from each other). The outer series (calyx of sepals) is usually green and leaf-like, and functions to protect the rest of the flower, especially the bud. The inner series (corolla of petals) is, in general, white or brightly colored, and is more delicate in structure. It functions to attract insect or bird pollinators. Attraction is effected by color, scent, and
Scutellaria nana each borne in a calyx of sepals with a prominent ridge on the upper surface. The corolla is up to 2 centimeters long, tubular in shape, and generally white or yellowish with purple mottling on the lips. Like several other skullcap species, this plant is used medicinally. Scutellaria nana Scutellaria nana is a species of flowering plant in the mint family known by the common names dwarf skullcap and dwarf scullcap. It is native to the western United States, especially in and around the Great Basin. It grows in plateau scrub, often on volcanic soils. It is a small perennial