Silverhair Mousetail (Ivesia argyrocoma)
Description
Ivesia argyrocoma-is a species of flowering plant in the-rose family-known by the common name-silverhair mousetail. It is native to the-San Bernardino Mountains-of southwestern-San Bernardino County, California. A population is also known from-Baja California-in Mexico; this population may or may not be distinct and further study is needed. This is a small perennial herb producing a clump of fuzzy reddish naked stems that grow horizontal to the ground and a number of tail-like hairy leaves which grow erect and may curl or droop. The stems are 10 to 20 centimeters long. Each leaf is a nearly cylindrical strip of tightly overlapping leaflets arranged around a central rachis up to 8 centimeters long. The leaflets are green and covered in a dense coat of shiny silver hairs. Most of the leaves emerge from the base of the stem; a few very small ones may emerge farther up the stem. At the tip of the stem is an-inflorescence-of one or more clusters of glandular flowers. Each flower has generally five green and red, densely silver-haired, triangular-sepals-and five smaller oval or spoon-shaped white petals. The center of the flower contains twenty yellow-anthered white-stamens-and several-pistils. The fruit is a tiny smooth brown achene.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Magnoliopsida
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Order: Rosales
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Family: Rosaceae
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Genus: Ivesia
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