Origin:
Introduced
Life Cycle:
Perennial Similar Species: Linaria vulgaris General Desc:
Typically grows in a mass of stems with crowded growth near ground level. Has deep roots and rhizomes. Identification notes: Rhizomatous perennial. Clasping ovate leaves opposite, alternate, or whorled. Tubular flowers in terminal clusters; corolla is yellow with a spur held below; axis of the flower is nearly parallel to the stem. Seed capsules contain many pyramidal seeds. Height:
4 feet Habitat
Habitat Description: Naturalized, found on roadsides, in fields, open areas. Plant Communities:
Disturbed Areas Elevation: 5000 - 7200 feet Flower Characteristics
Color:
Yellow
Shape:
Irregular in elongated clusters
Tubular:
Y
Flowering Period:
Jul - Aug Description:
Flowers are snapdragon-like, mostly yellow with a white to orange throat; 5-lobed and 2-lipped, the lower lip rounded on top and larger than the upper lip. The lower lip closes the throat; tubes are spurred at bases.
Leaf and Stem Characteristics
Leaf Color:
Bluish-green
Leaf Type:
Simple
Leaf Shape:
Round or oval
Leaf Margin:
Smooth
Leaf Attachment:
Alternate and opposite
Leaves Clasp:
Y Hairs:
No
Spines:
N
Leaf Description:
Oval to lance-shaped to 3 inches long. Leathery. Leaves are whorled and clasp stems at regular intervals. Fruit and Seed Characteristics
Fruit Color: Brown Fruit Type: Capsule Fruit Notes: Spheric capsules opening by slits into chambers near tip. Seed Notes: Produces many black, sharply angular and slightly winged seeds.
Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590