Arizona Naturalists >>> Ponderosa Woodland Flora >>> Plantaginaceae >>> Penstemon linarioides

Toadflax Penstemon

Penstemon linarioides

Toadflax Penstemon, Penstemon linarioides, photo © by Michael Plagens

Observed in Pinyon-Juniper habitat north of Seven Springs, Maricopa Co., Arizona, USA. May 2011.

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FLOWERS: Flower color ranges from pink, to lavender and purple. A few populations with white flowers can be found. The bilabiate (2-lipped) flowers have a fuzzy apendage inside that represents a modified stamen (staminoid).

LEAVES: The leaves are narrow and rather thick and stiff textured.

PERENNIAL: Above ground portion is herbaceous and regrows for several years from a root stock. By vegetative reproduction, many plants can be growing together forming clumps. Plant height is typically 50 cm.

RANGE: This is a common wildflower in open pinelands and pinyon-juniper coming into flower mostly after summer rains. Variations in flower color, leaf texture and flower size have lead to many named varieties and subspecies.

FRUIT: Dry, capsules with many seeds.

UNARMED. Thornless.

Scrophulariaceae -- Snapdragon Family (traditionally)
Plantaginaceae -- Plantain Family

More Information:

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Arizona Naturalist
Arizona's Ponderosa Woodlands
The Flora of Arizona's Ponderosa Woodlands


Copyright Michael J. Plagens, page created 23 September 2012