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Lithospermum erythrorhizon, commonly called purple gromwell, red stoneroot, red gromwell, red-root gromwell and redroot lithospermum, is a plant species in the family Boraginaceae. [1] It is called zǐcǎo ( 紫草 ) in Chinese, jichi ( 지치 ) in Korean, and murasaki ( ムラサキ ; 紫 ) in Japanese.
Ceanothus americanus is a shrub that lives up to fifteen years and growing between 18 and 42 in (0.5 and 1 m) high, having many thin branches.Its root system is thick with fibrous root hairs close to the surface, but with stout, burlish, woody roots that reach deep into the earth—root systems may grow very large in the wild, to compensate after repeated exposures to wildfires.
In order to escape shade, plants adjust their root architecture, most notably by decreasing the length and amount of lateral roots emerging from the primary root. Experimentation of mutant variants of Arabidopsis thaliana found that plants sense the Red to Far Red light ratio that enters the plant through photoreceptors known as phytochromes. [26]
The prop roots of a red mangrove suspend it over the water, thereby giving it extra support and protection. They also help the tree to combat hypoxia by allowing it a direct intake of oxygen through its root structure. A mangrove can reach up to 80 ft (24 m) in height in ideal conditions, but it is commonly found at a more modest 20 ft (6.1 m).
Redroot is the common name of some plants: Ceanothus americanus, aka New Jersey tea, Jersey tea ceanothus, mountain sweet, wild snowball; Lachnanthes, aka Carolina redroot; Sanguinaria, aka bloodroot, bloodwort, red puccoon
Madder is mentioned in the Talmud (e.g., tractate Sabbath 66b) where the madder plant is termed "puah" in Aramaic. Turkey red was a strong, very fast red dye for cotton obtained from madder root via a complicated multistep process involving "sumac and oak galls, calf's blood, sheep's dung, oil, soda, alum, and a solution of tin."
Cyperus erythrorhizos is a plant of wet areas such as rivers and ditches, generally at low elevations. It gets its common and scientific names from the red color of its roots. This sedge grows to a maximum of a meter in height, but is usually quite a bit shorter. It may have a number of long, wispy leaves around the base of the plant.
Bloodroot is a red natural dye used by Native American artists, especially among southeastern rivercane basketmakers. [26] A break in the surface of the plant, especially the roots, reveals a reddish sap which can be used as a dye. [4]