Ivesia saxosa
Encyclopedia
Ivesia saxosa is a species of flowering plant in the rose family
known by the common name rock mousetail, or rock ivesia. It is native to the mountains and deserts of central and southern California
and northern Baja California
, where it grows in cracks and crevices in rock faces and slopes. This is a clumpy perennial herb with hanging leaves and stems. Each leaf is a flat strip or cluster of rounded, lobed leaflets. The green to reddish stem is up to 30 centimeters long and bears an inflorescence
of clustered flowers. Each flower is almost a centimeter wide and has hairy pointed sepals and smaller rounded to spoon-shaped yellow petals. In the center of the flower are up to 40 stamen
s and many pistils
. The fruit is a tiny pale achene
.
Rosaceae
Rosaceae are a medium-sized family of flowering plants, including about 2830 species in 95 genera. The name is derived from the type genus Rosa. Among the largest genera are Alchemilla , Sorbus , Crataegus , Cotoneaster , and Rubus...
known by the common name rock mousetail, or rock ivesia. It is native to the mountains and deserts of central and southern California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
and northern Baja California
Baja California
Baja California officially Estado Libre y Soberano de Baja California is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is both the northernmost and westernmost state of Mexico. Before becoming a state in 1953, the area was known as the North...
, where it grows in cracks and crevices in rock faces and slopes. This is a clumpy perennial herb with hanging leaves and stems. Each leaf is a flat strip or cluster of rounded, lobed leaflets. The green to reddish stem is up to 30 centimeters long and bears an inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
of clustered flowers. Each flower is almost a centimeter wide and has hairy pointed sepals and smaller rounded to spoon-shaped yellow petals. In the center of the flower are up to 40 stamen
Stamen
The stamen is the pollen producing reproductive organ of a flower...
s and many pistils
Gynoecium
Gynoecium is most commonly used as a collective term for all carpels in a flower. A carpel is the ovule and seed producing reproductive organ in flowering plants. Carpels are derived from ovule-bearing leaves which evolved to form a closed structure containing the ovules...
. The fruit is a tiny pale achene
Achene
An achene is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate and indehiscent...
.