Silphium | |
---|---|
Silphium integrifolium | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Subfamily: | Asteroideae |
Tribe: | Heliantheae |
Subtribe: | Engelmanniinae |
Genus: |
Silphium L. |
Type species | |
Silphium asteriscus |
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. In the rosinweeds, the outer florets in the head are fertile and the inner florets are sterile; [3] in the sunflowers, the reverse is true. [4]
The name of the genus comes from the Ancient Greek word for a North African plant whose identity has been lost, though it is known its gum or juice was prized by the ancients as a medicine and a condiment. [3]
Species in the genus include: [5] [3] [6] [7] [8] [9]
Numerous species are now regarded as members of the genera Berlandiera and Verbesina. [5]
Silphium | |
---|---|
Silphium integrifolium | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Subfamily: | Asteroideae |
Tribe: | Heliantheae |
Subtribe: | Engelmanniinae |
Genus: |
Silphium L. |
Type species | |
Silphium asteriscus |
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. In the rosinweeds, the outer florets in the head are fertile and the inner florets are sterile; [3] in the sunflowers, the reverse is true. [4]
The name of the genus comes from the Ancient Greek word for a North African plant whose identity has been lost, though it is known its gum or juice was prized by the ancients as a medicine and a condiment. [3]
Species in the genus include: [5] [3] [6] [7] [8] [9]
Numerous species are now regarded as members of the genera Berlandiera and Verbesina. [5]