''Ivesia gordonii'' is a species of flowering plant in the rose family known by the common name Gordon's mousetail. It is native to the mountain ranges of the western United States from

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columbi ...

. This is a tuft-forming perennial plant which grows in rocky areas. It produces a clump of erect stems and tail-like leaves. Each leaf is a thick, rounded strip of small, green, lobed leaflets which overlap. The thin, naked stems reach tall. They bear hairy, glandular

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. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

s of clustered flowers. Each flower has five yellow-green triangular

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

s and five tiny spoon-shaped yellow petals. In the mouth of the flower are five

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

s and a few thready

pistils Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' ...

References

External links

Jepson Manual TreatmentPhoto gallery
gordonii {{Rosaceae-stub