Fauna
Flower

Slender Greenthread

Thelesperma simplicifolium

Also known as Threadleaf Thelesperma

Slender greenthread is a hardy perennial wildflower that thrives on the sun-baked limestone slopes, open oak-juniper savannas, and arid scrub of Texas and northern Mexico. Delicate daisy-like flower heads with bright yellow ray petals nod atop long, wiry stems that seem almost leafless from a distance. Its thread-like foliage minimizes surface area to reduce water loss, allowing the plant to bloom vigorously through intense summer heat while providing essential nectar to native bees and butterflies.

WildflowerDrought-TolerantPollinator Magnet
Slender Greenthread reference
no rights reserved, uploaded by lanechaffin · cc0
—observations
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—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyAutotrophic (photosynthetic)
Predators
  • White-Tailed Deer
  • Caterpillars
  • Grasshoppers
ThreatsHabitat conversion, intensive livestock overgrazing, invasive exotic grasses
HabitatsLimestone hills, caliche outcrops, rocky prairies, oak-juniper woodlands, desert scrub
Life spanPerennial (3–6 years)
Classification
  1. OrderAsterales
  2. FamilyAsteraceae
  3. GenusThelesperma
  4. SpeciesThelesperma simplicifolium
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Best Viewing: Search rocky roadside cuts and thin limestone soils from April through October.
  • Photography: Capture the translucent yellow petals against harsh midday light with a low-angle shot.
  • Pollinator Watching: Pause beside flowering clumps to spot native solitary bees harvesting pollen.
Related species
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