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(Upload on October 10 2015) [ 日本語 | English ]

Tithonia rotundifolia (Mill.) S. F. Blake






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Tithonia Desf. ex Juss., non Kuntze (ニトベギク)


Heliantheae (ヒマワリ連)
T. diversifolia (Hemsl.) A. Gray (ニトベギク)
T. rotundifolia (Mill.) S. F. Blake (メキシコヒマワリ)

Tithonia rotundifolia in Hokkaido


Mekishikohimawari (メキシコヒマワリ, 墨西哥向日葵), Mexican sunflower, or clavel de muerto
Lifeform: annual/perennial forb, occasionally becoming 4 m tall
Distribution: native to Florida, Louisiana, Mexico, Central America and the West Indies
Habitat: sunny and dry/medium
Leaf: deltoid to lanceolate, occasionally lobed
Synonyms:

Tagetes rotundifolia Mill.
Tithonia speciosa (Hook.) Griseb.
Helianthus speciosus Hook.

Use: gardening (called genus name for commercial use)
索引

ST1 ST2 ST3
[1-3] at a bridge on Sosei River, N10/W1, Sapporo, on September 9 2015.

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