Thelesperma filifolium var. filifolium
Thelesperma filifolium (Hook.) A. Gray var. filifolium
Stiff Greenthread, Showy Navajo Tea, Greenthread
Asteraceae (Aster Family)
Synonym(s): Thelesperma trifidum
USDA Symbol: thfif
This winter annual, or short-lived perennial, is often found growing in colonies. Its slender, branched stems, 10-30 in. tall, bear leaves divided into thread-like segments. In bud, the flower heads droop; when fully opened, they are erect and upright. The yellow, daisy-like flowers occur on delicate, leafless stalks.
Stiff Greenthread's bloom period is often shortened by an insect larva that consumes the buds.
From the Image Gallery
Plant CharacteristicsDuration: Annual , Perennial
Leaf Retention: Deciduous
Size Notes: Up to about 30 inches tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Yellow
Bloom Time: Feb , Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov , Dec
DistributionUSA: AR , KS , LA , MO , MS , OK , TX
Native Distribution: S. SD to Mex., including parts of AR, OK & throughout TX
Native Habitat: Dry hills & plains. In East Texas and the Plains Country.
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
Soil Description: Dry, rocky or sandy soils. Limestone-based, Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay, Caliche type.
Conditions Comments: The common name greenthread, refers to the thread-like appearance of the foliage. Many butterflies feed on this nectar plant that blooms profusely from April to June.
BenefitUse Ornamental: Wildflower meadow, Pocket prairie
Use Wildlife: Nectar-Bees, Nectar-Butterflies, Nectar-insects, Seeds-Granivorous birds.
Conspicuous Flowers: yes
Larval Host: Dwarf Yellow butterfly.
Nectar Source: yes
Deer Resistant: Minimal
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
NPSOT - Austin Chapter - Austin, TX
NPSOT - Williamson County Chapter - Georgetown, TX
Herbarium Specimen(s)NPSOT 0819 Collected Mar 12, 1994 in Bexar County by Harry Cliffe
BibliographyBibref 355 - Landscaping with Native Plants of Texas and the Southwest (1991) Miller, G. O.
Bibref 281 - Shinners & Mahler's Illustrated Flora of North Central Texas (1999) Diggs, G. M.; B. L. Lipscomb; B. O'Kennon; W. F...
Bibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
Bibref 291 - Texas Wildscapes: Gardening for Wildlife (1999) Damude, N. & K.C. Bender
Bibref 328 - Wildflowers of Texas (2003) Ajilvsgi, Geyata.
Bibref 286 - Wildflowers of the Texas Hill Country (1989) Enquist, M.
Search More Titles in Bibliography
Web ReferenceWebref 38 - Flora of North America - beta site (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resourcesUSDA: Find Thelesperma filifolium var. filifolium in USDA Plants
FNA: Find Thelesperma filifolium var. filifolium in the Flora of North America (if available)
Google: Search Google for Thelesperma filifolium var. filifolium
MetadataRecord Modified: 2023-01-30
Research By: LAL, LAS