Helianthus praecox
Helianthus praecox is a North American species of sunflower known by the common name Texas sunflower. It is endemic to Texas. Most of the populations are either along the Gulf Coast or in the Río Grande Valley. Helianthus praecox grows on sandy soils and coastal prairies. It is an annual herb up to 150 cm (60 inches or 5 feet) tall. One plant usually produces 1-3 flower heads, each containing 11-16 yellow ray florets surrounding 35 or more red or purple disc florets.
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Helianthus praecox
Helianthus praecox is a North American species of sunflower known by the common name Texas sunflower. It is endemic to Texas. Most of the populations are either along the Gulf Coast or in the Río Grande Valley. Helianthus praecox grows on sandy soils and coastal prairies. It is an annual herb up to 150 cm (60 inches or 5 feet) tall. One plant usually produces 1-3 flower heads, each containing 11-16 yellow ray florets surrounding 35 or more red or purple disc florets.
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Helianthus praecox is a North ...... Webb County to Cameron County)
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genus
Helianthus
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species
praecox
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status
LC
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status system
IUCN3.1
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synonyms
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Helianthus cucumerifolius var. praecox ( A.Gray)
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Helianthus debilis subsp. hirtus (Heiser, syn of subsp. hirtus)
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Helianthus debilis subsp. praecox ( Heiser)
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Helianthus debilis subsp. runyonii (Heiser, syn of subsp. runyonii)
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Helianthus praecox var. runyonii ( B.L.Turner, syn of subsp. runyonii)
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Helianthus praecox is a North ...... re red or purple disc florets.
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label
Helianthus praecox
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