Friday, February 19, 2016

Flower Friday: Beguiling yellow butterwort betrays bugs!

Photo by Eleanor Dietrich.
Yellow butterwort (Pinguicula lutea)

Click on terms for botanical definitions.

Yellow butterwort is a perennial carnivorous plant. Its solitary bloom can be bright or pale yellow and has five irregular, notched petals. The bloom sits atop an upright, leafless stalk that arises from a basal rosette of succulent yellowish-green leaves. The stalk, sepals and leaves are covered in tiny hairs. The hairs on the leaf surface secrete a sticky mucilage in which insects become trapped. (Insects often mistake the mucilage for drops of water.) Enzymes are then secreted to help the plant digest the insects. The leaves have pointed tips and entire margins that curl up during digestion and relax once digestion is complete. The ability to trap and digest insects allows yellow butterwort (like most carnivorous plants) to survive in nutrient-deficient conditions. Subsequently, it helps prevent insect predation.

Yellow butterwort blooms late winter into spring. It occurs naturally in wet pine flatwoods, wet prairies and seepage slopes. It prefers a drier environment compared with other native Pinguicula. It a state-listed threatened species.

Basal rosette of leaves with curled up margins.
Photo by Eleanor Dietrich.
The genus name, Pinguicula, comes from the Latin pinguis, which means “fat” and alludes to the greasy feeling of the leaf surface. The species name, lutea, comes from the Latin luteus, or “yellow.”

Family: Lentibulariaceae (Bladderwort family)

Native range: Mostly throughout Florida

Soil: Moist, acidic soils with poor nutrients

Exposure: Full sun

Growth habit: 1+’

Propagation: Seed

Garden tips: Although not commercially available, Pinguicula lutea can be propagated by seed. Getting seed, however, may be challenging as they cannot be collected from public natural lands. Your best bet is to find someone who has it growing on their privately owned land. (Be sure to get permission before collecting on private land.)

To see where yellow butterwort occurs naturally, click here.

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