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The plant is a herbaceous perennial that grows into a small bush, [2] up to 70 cm (28 in) high, with pungently-scented leaves. The leaves are light yellowish green, variously pinnatifid . The conspicuous daisy-like flowers are up to 20 millimetres ( 3 ⁄ 4 in) across, borne in lax corymbs .
Parthenium is a genus of North American annuals, biennials, perennials, subshrubs, and shrubs in the tribe Heliantheae within the family Asteraceae and subfamily Asteroideae. [4] [2] [3] [5] The name Parthenium is an evolution of the Ancient Greek name παρθένιον (parthenion), which referred to Tanacetum parthenium.
This plant is a perennial herb growing up to 1 metre (3.3 ft) high. [3] The glandular leaves are oval to lance-shaped and variable in size. They have serrated, toothed, or lobed edges. Some authorities recognize two varieties based on leaf shape: [4] var. integrifolium [5] and var. mabryanum.
Parthenium alpinum is a species of flowering plant in the aster family known by the common names alpine feverfew and Wyoming feverfew. It is native to Wyoming, Colorado, and New Mexico in the United States. [1] This is a small, mat-forming, long-lived perennial herb with gray-green, hairy leaves and solitary flower heads.
A list of tree species, grouped generally by biogeographic realm and specifically by bioregions, and shade tolerance. Shade-tolerant species are species that are able to thrive in the shade, and in the presence of natural competition by other plants. Shade-intolerant species require full sunlight and little or no competition.
Common names include Santa-Maria, [2] Santa Maria feverfew, [3] whitetop weed, [4] and famine weed. [5] In India, it is locally known as carrot grass, congress grass [6] or gajar ghas or dhanura. [7] It is a common invasive species [8] in India, [9] Australia, and parts of Africa. [5] Pollen grains of Parthenium hysterophorus
Tanacetum is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere. [5] They are known commonly as tansies . [ 4 ] [ 5 ] [ 6 ] The name tansy can refer specifically to Tanacetum vulgare , which may be called the common tansy or garden tansy for clarity. [ 6 ]
Vachellia xanthophloea are planted next to dams and streams on farms to control soil erosion, as a live fence or hedge and in ornamental planting for shade and shelter in amenity areas. Vachellia xanthophloea is often planted as a source of firewood, but its gummy sap leaves a thick, black, tarlike residue when burnt.