Thelesperma filifolium
(Greenthread)
Thelesperma filifolium, River Bend Camping Area, San Angelo State Park, Tom Green Co. 5911
Thelesperma filifolium, Wildflower Center, Austin, Travis Co. 1835
Thelesperma filifolium, Fredericksburg, Gillespie Co. 1035
Thelesperma filifolium, US 380 east of Jayton, Kent Co. 8481
Thelesperma filifolium, US 380 east of Jayton, Kent Co. 8473
Thelesperma filifolium, Fredericksburg, Gillespie Co. 1042
Thelesperma filifolium, Wildflower Center, Austin, Travis Co. 1838
Thelesperma filifolium, River Bend Camping Area, San Angelo State Park, Tom Green Co. 5921
| Scientific Name | Thelesperma filifolium | USDA PLANTS Symbol | THFI |
| Common Name | Greenthread | ITIS Taxonomic Serial No. | 38521 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description |
Habitat: Dry areas, calcareous soils. Plant: Upright annual (may be persistant) 6 to 24 inches tall with few to several branches. Leaves: Divided one to three times into narrow segments up to 4 inches long, the upper ones becoming linear. Inflorescence: Composite flowerheads 1 to 1-1/2 inches across, 8 yellow ray flowers, three-lobed, and many brown disk flowers; involucre is urn-shaped; 7 to 12 light green, pointed, narrow outer phyllaries and 8 greenish to reddish brown inner phyllaries. Bloom Period: April to June. References: "Wildflowers of the Texas Hill Country" by Marshall Enquist, SEINet, and "Manual of the Vascular Plants of Texas" by Correll and Johnston. |
BONAP Distribution Map Map Color Key |
Texas Status: Native |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2024