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Flora of Taiwan | Family List | Compositae | Ambrosia

Ambrosia artemisiifolia L., Sp. Pl. 988. 1753; Hatusima, Fl. Ryuk. 2nd. ed. 896. 1975.

豬草 (瘤果菊)

Ambrosia artemisiifolia

Credit: HAST

  • Ambrosia elatior L.

    Erect annuals; stems 30-100 cm tall, branched, soft pubescent. Leaves 3-11 cm long, bi- or tri-pinnatifid, upper surface slightly pubescent, lower surface pubescent. Racemes terminal, slender, staminate heads above, nodding; pistillate heads few, on lower part or raceme; involucre bracts connate, pubescent, glandular. Involucre and achenes united into a hard false fruit with wart-like papillae.

    TAIPEI: Shihmen, Ho 291. HSINCHU: Chupei, Hsinkang Village, Peng 15231; Lienhuassu, Kao106. NANTOU: Wushe, Peng 2309.

    Native of North America; a polymorphic weed widely naturalized in the warmer parts of the world. Taiwan, a widely naturalized weed along freeways, open construction sites and waste places in lowlands.


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