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Ancient silver coin from Cyrene depicting a stalk of silphium. Silphium (also known as laserwort or laser; Ancient Greek: σίλφιον, sílphion) is an unidentified plant that was used in classical antiquity as a seasoning, perfume, aphrodisiac, and medicine. [1] [2]
Silphium terebinthinaceum prefers full sun. S. terebinthinaceum is a drought-resistant plant that thrives in slightly dry to moist environments. [2] While S. terebinthinaceum prefers deep loamy soils, it is tolerant of soils with gravel and rocks. The plant is slow at developing but is strong and difficult to kill when it is mature.
Silphium perfoliatum is considered a potential energy crop plant, especially because it has low demands on the climate, the soil and previous crop and produces high amounts of biomass. Based on the results of the Thuringian State Institute of Agriculture the plant can be an alternative plant for biogas production. [ 15 ]
Silphium laciniatum is a species of flowering plant in the family Asteraceae known commonly as compassplant [2] or compass plant. It is native to North America, where it occurs in Ontario in Canada and the eastern and central United States as far west as New Mexico . [ 3 ]
Silphium is a genus of North American plants in the tribe Heliantheae within the family Asteraceae. [1] [2]Members of the genus, commonly known as rosinweeds, are herbaceous perennial plants growing to 0.2 m (8 in) to more than 2.5 m (8 ft 2 in) tall, with yellow (rarely white) flowerheads that resemble sunflowers.
Silphium integrifolium is a species of flowering plant in the family Asteraceae. Its common names include rosinweed, whole-leaf rosinweed, entire-leaf rosinweed, prairie rosinweed, [1] and silflower. [2] It is native to eastern North America, including Ontario in Canada and the eastern and central United States as far west as New Mexico. [3] [4]
Silphium perplexum is a herbaceous perennial growing to a height of 8 ft (2.4 m), it has short rhizomes.Leaf morphology changes as the plant develops with basal rosette leaves differing from stem leaves.
Silphium gracile is placed by some authors as a variety of Silphium radula, while other authors treat them as distinct species. [3] [4] Silphium radula can be distinguished from S. gracile by its shorter peduncles, resulting in its stem leaves often subtending the flower heads (as opposed to flowers being on long naked peduncles as in S. gracile).