Etymology: Linaria: from the Latin linum, "flax," referring to the flax-like leaves of some species
Plants: erect, perennial, 1'-3' tall forb; creeping, clone-forming roots
Leaves: many, linear and narrowing toward the base, pale-green,
Flowers: orange to yellow, 5-parted, 3/4" long, slender spur at the base, 4 stamens; erect upper lip with 2 lobes, lower lip with 3 lobes; inflorescence a compact, spike-like cluster (raceme) of stalked flowers at the top of the stem; blooms May-Sept.
Fruits: roundish capsule with winged seeds
Habitat: disturbed sites; in sandy soil
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - naturalized; potentially invasive
WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods Invasive And Exotic Species of North America: Descriptions, management issues, warnings, photos, etc. USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"