Lemon’s Rubberweed Flower | Hymenoxys Lemmonii

Kingdom	Order	Family	Genus	Species
Plantae	Asterales	Asteraceae	Hymenoxys	Hymenoxys lemmonii

Lemon’s Rubberweed Flower Characteristics

Hymenoxys lemmonii is a perennial herb of the Asterceae family. The plant can grow to a height of 15-20 inches.

The leaves of the Lemon’s Rubberweed are straight and dark green. It measures 3.6 inches in length. The leaf blades are simple or lobed.
Hymenoxys lemmonii has one or more branches (3-10). Their stem is hairless.
The stem of the H. lemmonii is purple-red tinted proximally, or it can be green throughout.
Lemon’s Rubberweed flowers are Daisy-like. The flower has thick golden disk florets and shaggy golden ray florets.

Lemon’s Rubberweed Facts

The generic name Hymenoxys is from the Greek word “hymen” and “oxys“, which means “membrane” and “sharp” respectively.
The plants of the genus Hymenoxyscontain sesquiterpene lactone hymenoxon, which is toxic to sheep. H. lemmonii^[1] is considered one of the poisonous plants in North America affecting sheep and goats.
Scientists^[2] discovered sesquiterpene lactone aglycones and glycosides from the Hymenoxys lemmonii. It is listed as a poisonous plant^[3].
In research^[4] conducted, only the H. lemmonii has recovered enough in high severity burn areas to support the endemic butterflies.
The species name “lemmonii” was derived from John Gill Lemmon^[5] (1832-1908). He was the husband of Sarah Plummer Lemmon, a famous American botanist. It is estimated that 3% of Arizona’s native plants were named by this couple.

Suggested Reading: Popular Flower Types | September Birth Plant | Rarest Butterfly ColorCite This Page

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BioExplorer.net. (2024, November 18). Lemon’s Rubberweed. Bio Explorer. https://www.bioexplorer.net/plants/flowers/lemons-rubberweed/.

BioExplorer.net. "Lemon’s Rubberweed" Bio Explorer, 18 November 2024, https://www.bioexplorer.net/plants/flowers/lemons-rubberweed/.

BioExplorer.net. "Lemon’s Rubberweed" Bio Explorer, November 18 2024. https://www.bioexplorer.net/plants/flowers/lemons-rubberweed/.

Key References

^[1] – “Toxic Plants of North America – George E. Burrows, Ronald J. Tyrl – Google Mga aklat”. Accessed September 13, 2022. Link.
^[2] – “Sesquiterpene lactone aglycones and glycosides from Hymenoxys lemmonii – ScienceDirect”. Accessed September 13, 2022. Link.
^[3] – “Poisonous Plants: January 1984 – December 1991 – Carol Kopolow – Google Mga aklat”. Accessed September 13, 2022. Link.
^[4] – “Living on the Edge: Assessing the Effects of Catastrophic Fire on Plants Utilized by Two Endemic Subspecies of Spring Mountains Butterflies”. Accessed September 13, 2022. Link.
^[5] – “All Those Plants Named “Lemmonii” | Cochise County Master Gardeners”. Accessed September 13, 2022. Link.

Lemon’s Rubberweed