Angiosperms (Flowering Plants) • Earth.com

Desert Princesplume

(Stanleya pinnata)

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Description

Stanleya pinnata is a species of flowering plant in the family Brassicaceae known as desert princesplume. It is a perennial herb or shrub native to North America. The plant is native to the western Great Plains and western North America. It occurs in many types of open habitat, including deserts, chaparral, foothills, rocky cliffs, sagebrush, and prairie. It prefers alkali- and gypsum-rich soils. Stanleya pinnata is a perennial herb or shrub producing several erect stems reaching up to about 1.5 metres (4+11⁄12 ft) in maximum height. The stems are unbranched, hairless, often waxy in texture, and have woody bases. The leaves have fleshy blades up to 15 centimeters long by 5 wide which are divided into several long, narrow lobes. The blades are borne on petioles. The top of the stem is occupied by a long inflorescence which is a dense raceme of many flowers. Each flower has four narrow yellowish sepals which open to reveal four bright yellow petals each up to 2 cm long. The stamens protruding from the flower's center may approach 3 cm in length. The fruit is a curving, wormlike silique up to 8 cm long. It has been used as a Native American traditional medicinal plant and food source, including by the Hopi, Zuni, Paiute, Navajo, Kawaiisu, and Tewa peoples. It is a larval host to both Becker's white and checkered white caterpillars. Some of the plant's amino acids use selenium from the soil in place of sulfur, making it highly toxic to animals. Stanleya is a genus of six species of plants in the family Brassicaceae known commonly as prince's plumes. These are herbs or erect shrubs which bear dense, plumelike inflorescences of white to bright yellow flowers with long stamens. Stanleya species are native to the western United States. These plants are toxic because they concentrate selenium from the soil in their tissues.

Taxonomic tree:

Domain:
Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Order:Brassicales
Family:Brassicaceae
Genus:Stanleya
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