Thelesperma species

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Scientific Name Thelesperma megapotamicum USDA PLANTS Symbol
THME
Common Name Hopi Tea Greenthread ITIS Taxonomic Serial No.
38525
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Plains and foothills (3500 to 7500 ft.); Sandy or clay soils, disturbed or open areas.
Plant: Erect perennial with several smooth, slender, branching stems 12 to 32 inches tall.
Leaves: Along lower half to three-quarters of the stem, opposite, compound once- or twice-pinnately-divided into narrow, linear, thread-like segments 3/4 to 1-1/2 inches long.
Inflorence: Solitary rayless flower heads on the ends of long peduncles with many yellow disk florets; grayish-green, often purple-tinged, involucre enclosed by an inner row of 5 to 8 phyllaries fused together for most of their length and at the bottom a ring of 3 to 5 short outer phyllaries pointing outward beyond the base.
Bloom period: June to September.
References: "Flora of Colorado" by Jennifer Ackerfield, American Southwest and SEINet.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Thelesperma subnudum USDA PLANTS Symbol THSU
Common Name Navajo Tea ITIS Taxonomic Serial No. 38528
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Plains to foothills (4300 to 8500 ft); open, dry areas.
Plant: Upright, hairless perennial 4 to 12 inches tall; single smooth stem.
Leaves: Crowded at the base and bottom 1/4 to 1/3 of the stem, pinnately-divided into 3 to 5 lobes, each lobe lanceolate to oblanceolate or linear, 3/8 to 1-3/8 inches long and ~1/8-inch wide.
Inflorescence: Solitary, terminal composite flowerheads 3/4 to 1-1/4 inches across; 8 (or none) yellow ray flowers and numerous yellow disk flowers; involucre is hemispherical to almost cylindrically-shaped with 8 phyllaries, lanceolate and green with whitish margins in two rows, and up to 9 shorter, spreading bractlets below.
Bloom Period: May to July.
References: "Flora of Colorado" by Jennifer Ackerfield, American Southwest and SEINet.
BONAP Distribution Map
Colorado Status:
Native

© Tom Lebsack 2021