Giclee reprint of an original drawing from Icones Plantarum Rariorum (1781–1793), a three-volume botanical work published in Vienna by the Dutch-Austrian scientist Nikolaus Joseph von Jacquin.

Unlike other 18th-century botanical texts that embellished drawings for artistic flare, Jacquin insisted on strict scientific accuracy. He employed legendary botanical artists Franz and Ferdinand Bauer, making the 648 hand-colored plates some of the most reliable visual typespecimens in history.

Tremella clavariiformis is the historic name for Gymnosporangium clavariiforme, a prominent species of plant rust fungus famously known as Tongues of Fire.

This fungus is a complex, two-host parasitic rust that completely transforms its appearance depending on the plant it infects. When growing on wild juniper trees (Juniperus communis), it forms clusters of bright orange, horn-like tubes called telial horns and depicted in this print. During dry weather, they shrivel away, but rain causes them to rapidly swell into a striking gelatinous mass.

Airborne spores then travel from the juniper to infect hawthorn trees (Crataegus) and related plants. On hawthorns, it creates yellow-orange spots on leaves and causes the fruit to erupt with whitish, frayed spore tubes resembling a "Medusa head