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What is Pinguicula?

Deborah Walker
Deborah Walker

Pinguicula is a genus of about 80 known species of perennial plants in the Lentifbulariaceae family. All plants in this genus live in areas with very humid air, stable air temperatures, and wet soil during the growing period. As carnivores, these plants are able to consume insects as big as a large fly. Pinguicula is susceptible to some common plant diseases and pests, and in some areas of the United States, it has threatened or endangered species status. Historically, the vulgaris species was used in homes and on the farm by northern Europeans.

Many people know Pinguicula as common butterwort. Twelve species in this genus are native to Europe, nine to North America, and a few are found in northern Asia. The majority of species are native to Central and South America. They tend to live at high altitudes where temperatures can get very cold. Pinguicula grows best in rocky soil, although some do grow on tree branches, in sphagnum moss, or in bogs that have an acidic pH level.

Pinguicula vulgaris was once used in Europe to make blonde hair shiny.
Pinguicula vulgaris was once used in Europe to make blonde hair shiny.

These plants grow to be 1 to 6 inches (3-16 cm) tall. Pinguicula produces spurred purple or white flowers June through August. The winter-resting buds, or hibernacula, can withstand very cold temperatures. Succulent leaves give off a musty smell that lures small insects. Each 1 to 2 inch (2-5 cm) leaf has a stalked gland and a sessile gland used to trap and digest prey.

Pinguicula is susceptible to crown rot disease, which will easily and quickly kill the plant. The disease is caused by nematodes, the main pest that plagues these plants. Nematodes may be repelled by bright light. Dusting the leaves with ground dried blood worms may also keep nematodes away from the plant.

In the United States, a few species of Pinguicula are in danger of extinction. In Maine and New York, the common butterwort is listed as a threatened species. In New Hampshire and Wisconsin, it is on the endangered species list.

Historically, Pinguicula vulgaris was used by some northern Europeans to curdle milk and as a balm used to soothe the udders of their farm animals. It is said to have been combed through blonde hair to make it more shiny. People on vision quests made a drink known as Vibefedt by mixing the plant with mead. This concoction was supposed to make the visions more vivid. Other than these uses, the plants in this genus do not appear to have any other ethnobotanical uses.

Frequently Asked Questions

What is Pinguicula and where can it be found?

Pinguicula, commonly known as butterworts, is a genus of carnivorous plants that trap and digest insects using sticky, glandular leaves. They are found in a variety of habitats worldwide, from North American wetlands to European grasslands and South American cloud forests. Their global distribution reflects their adaptability to different environments.

How does Pinguicula capture and digest insects?

Pinguicula captures insects with its sticky leaves that secrete a mucilaginous substance. When an insect lands on the leaf, it becomes ensnared, and the plant secretes enzymes to digest the prey. The nutrients, particularly nitrogen, are absorbed to supplement the poor mineral content of the soil in which they typically grow.

Are there different types of Pinguicula, and how do they vary?

Yes, there are over 80 known species of Pinguicula, each adapted to specific environmental conditions. Variations include size, leaf shape, and color, with some species adapted to alpine climates and others to tropical regions. Flower colors can range from purple and blue to white and pink, adding to their diversity.

Can Pinguicula be grown as a houseplant, and what care does it require?

Pinguicula can be grown as a houseplant, and it's particularly favored by carnivorous plant enthusiasts. They require bright, indirect light, high humidity, and pure water, such as rainwater or distilled water. During winter, some species enter a dormancy period and may require less water and cooler temperatures.

Is Pinguicula endangered, and what conservation efforts are in place?

Some Pinguicula species are considered endangered due to habitat loss and over-collection. Conservation efforts include habitat protection, cultivation in botanical gardens, and seed banking. Organizations like the International Carnivorous Plant Society promote awareness and conservation of these unique plants.

What role does Pinguicula play in its ecosystem?

Pinguicula plays a significant role in its ecosystem by controlling insect populations and acting as a 'nutrient pump,' drawing nutrients from captured insects into nutrient-poor soils. This process can benefit other plant species in the vicinity, making Pinguicula a key component in the balance of certain ecosystems.

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    • Pinguicula vulgaris was once used in Europe to make blonde hair shiny.
      By: Lvnel
      Pinguicula vulgaris was once used in Europe to make blonde hair shiny.