Pedicularis semibarbata, known by the common name pinewoods lousewort, is a species of flowering plant in the broomrape family.
Pedicularis semibarbata is a perennial herb producing several stems up to 20 centimeters long from a caudex, but most of the stem is beneath the soil and the plant is low on the ground. The leaves are up to 20 centimeters long, lance-shaped shape and divided into many toothed or lobed segments.
The inflorescence is a raceme of flowers with hairy bracts and sepals surrounding the flower bases. Each hairy red- or purple-tinged yellow flower is club-shaped and may exceed 2 centimeters in length. Toward the middle it is divided into a broad hooded upper lip and a three-lobed lower lip.
- Parasitic plant
- Stermitz, F. R., et al. (1989). Quinolizidine alkaloids obtained by Pedicularis semibarbata (Scrophulariaceae) from Lupinus fulcratus (Leguminosae) fail to influence the specialist herbivore Euphydryas editha (Lepidoptera). Journal of Chemical Ecology 15:11 2521-30.
- Nevada Natural Heritage Program Rare Plant Fact Sheet
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- Jepson Manual Treatment: Pedicularis semibarbata
- USDA Plants Profile — Pedicularis semibarbata
- Pedicularis semibarbata — UC Photo gallery
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