Thymophylla pentachaeta var. pentachaeta
Thymophylla pentachaeta (DC.) Small var. pentachaeta
Parralena, Fiveneedle Pricklyleaf, Dogweed, Dyssodia
Asteraceae (Aster Family)
Synonym(s): Dyssodia pentachaeta, Hymenatherum pentachaetum
USDA Symbol: THPEP
Fiveneedle pricklyleaf is small and erect, 4-10 inches tall. It has many branches with slender, needle-like leaves about 1/2 inch long, divided into narrow lobes tipped with a spine. The flower heads, 1/2 inch across, are above the leaves at the end of stems about 3 inches long. They are yellow and numerous, with prominent protruding yellow centers.
Strong-scented plants that have a lingering, unpleasant odor.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Habit: Herb , Subshrub
Leaf Retention: Deciduous
Leaf Arrangement: Opposite
Leaf Complexity: Pinnate
Size Notes: Up to about 10 inches tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Orange , Yellow
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct
Bloom Notes: Tends to flower after rains.
DistributionUSA: NM , TX
Native Habitat: Dry roadsides, gravelly slopes, washes and rocky places, often on limestone throughout Texas.
Growing ConditionsLight Requirement: Sun
BenefitFragrant Flowers: yes
Deer Resistant: High
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Lady Bird Johnson Wildflower Center - Austin, TX
Brackenridge Field Laboratory - Austin, TX
Nueces River Authority - Uvalde, TX
Herbarium Specimen(s)NPSOT 0073 Collected Oct. 14, 1990 in Bexar County by Mollie Walton
NPSOT 0632 Collected Nov 4, 1993 in Bexar County by Mike Fox
BibliographyBibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
Search More Titles in Bibliography
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resourcesUSDA: Find Thymophylla pentachaeta var. pentachaeta in USDA Plants
FNA: Find Thymophylla pentachaeta var. pentachaeta in the Flora of North America (if available)
Google: Search Google for Thymophylla pentachaeta var. pentachaeta
MetadataRecord Modified: 2023-01-30
Research By: LAL