Fritillaria

Lore & Background

Fritillaria is a genus of spring-flowering perennial herbs that grow from bulbs with fleshy scales, similar to lilies. The bulbs are usually tunicate, with a few tight scales and a translucent covering that disappears as the bulb matures, though some species, such as *F. imperialis* and *F. persica*, have naked bulbs with many scales and loose bulbils. The stems bear leaves that are opposite or arranged in whorls, sometimes ending in a tendril. Flowers are typically solitary, nodding, and bell-shaped, with six tepals in two whorls that are often checkered in light and dark squares. The tepals have nectarial pits, grooves, or pouches at their base; in *F. persica*, this pouch forms a short spur. The flowers are bisexual, with a superior ovary of three carpels, a trilobed style, and six stamens with anthers that are usually pseudobasifixed, meaning they cannot move freely. The fruit is a six-angled capsule, sometimes winged, containing flattened, winged seeds with a small embryo. The genus is native to temperate regions of the Northern Hemisphere, from the Mediterranean and North Africa across Eurasia to western North America. Many species are endangered due to overcollection for horticulture and traditional Chinese medicine. The genome size is among the largest in flowering plants, and polyploidy is rare.

Reader's Guide

Fritillaria species are spring-flowering, bulbous perennial herbs in the lily family, native to temperate regions of the Northern Hemisphere from the Mediterranean and North Africa across Eurasia to western North America. The genus comprises about 130 to 140 species divided into eight subgenera. The type species, *Fritillaria meleagris*, was first described in Europe in 1571, and other species from the Middle East and Asia were introduced to Europe around the same time. The flowers are typically solitary, nodding, and bell-shaped, with bulbs having fleshy scales similar to those of lilies, to which they are genetically very close. Their large genome size is notable; polyploidy is rare, with nearly all species being diploid. The bulbs contain steroidal alkaloids, saponins, and terpenoids that form active ingredients in traditional Chinese medicine, a practice that, along with enthusiastic picking for horticulture, endangers many species. The flowers have been popular subjects for artists and serve as emblems for regions and organizations. The name *Fritillaria* likely refers to the checkered pattern of *F. meleagris*, resembling a dice box. Some species produce disagreeable odors: *F. imperialis* has a "foxy" scent identified as 3-methyl-2-butene-1-thiol, while *F. agrestis* smells of canine feces, though *F. striata* is sweetly fragrant.

Did You Know?

• The largest genome in diploid Fritillaria is found in subgenus Japonica, exceeding 85 Gb.
• Fritillaria imperialis has a 'foxy' odor identified as 3-methyl-2-butene-1-thiol.
• Fritillaria flowers are usually solitary, nodding, and bell-shaped with six tepals.