[Sidenote: _Mentzèlia gracilénta_ =Yellow Spring Southwest=]
This has several pale greenish or pinkish stems, from a few inches to a foot and a half tall, which look smooth but are very harsh to the touch, springing from a cluster of stiff, harsh, dull-green leaves, variously lobed or toothed. The flowers are nearly an inch across, with glossy, bright yellow petals and beautiful, fuzzy, yellow centers, and are very delicate and pretty.
A rather large family, mostly of the Mediterranean region; herbs or low shrubs; flowers regular, perfect, all the parts borne on the receptacle; sepals five, the two outer ones smaller and bract-like, or lacking; petals three to five; stamens many; ovary superior, one-celled, with a single style, or none; fruit a capsule, with several or many seeds.
There are many kinds of Helianthemum, widely distributed, perennials; leaves alternate, undivided, toothless; flowers yellow and, in most North American species, of two sorts; the earlier ones with large, yellow petals, very numerous stamens and a many-seeded pod; the later ones, small, clustered, with small petals or none, three to ten stamens, and small, few-seeded pods.
[Sidenote: =Rock-rose= _Heliánthemum scopàrium_ =Yellow Spring California=]
A pretty plant, with many, slender stems and narrow, yellowish-green leaves, forming clumps from one to two feet high. The flowers are half an inch to three-quarters of an inch across, the buds and calyxes reddish and the petals clear yellow, the pistil greenish, with a three-lobed stigma. In favorable situations, such as Point Loma, this makes attractive little bushes, neat yet feathery, suggesting large clumps of grass, sprinkled thickly with flowers.
A large family, nearly all natives of America and of dry or desert places, with strange characteristics, which make them easily recognized as a whole, but many of the individuals have not yet been studied or described; fleshy plants, with thick stems, often flattened, ridged or covered with knobs, mostly without leaves, usually with spines, which generally protrude from cushions of small bristles; the flowers perfect, regular, showy, and mostly single; sepals, petals, and stamens all numerous; ovary inferior, with a long style and several stigmas; fruit usually a pulpy berry, containing many seeds.