Sneezewort
Achillea ptarmica L.
subsp. macrocephala (Ruprecht) Heimerl
var. yezoensis Kitamura
[Asteraceae (Compositae)]
Hosobaezonokogirisou (ホソバエゾノコギリソウ, 細葉蝦夷鋸草)
Lifeform : perennial forb
Distribution and habitat: serpentine zone (蛇紋岩帯)
Achillea L. in Japan
A. ptarmica L. subsp. macrocephala (Ruprecht) Heimerl (エゾノコギリソウ)
var. yezoensis Kitamura (ホソバエゾノコギリソウ)
A. alpina L. (Nokogirisou ノコギリソウ)
var. discoidea (Regel) Kitamura (Yama-nokogirisou ヤマノコギリソウ)
subsp. camtschatica (Heimerl) Kitamura (Syumusyu-nokogirisou シュムシュノコギリソウ)
subsp. japonica (Heimerl) Kitamura (Kita-nokogirisou キタノコギリソウ)
subsp. pulchra (Koidz.) Kitamrua (Akabana-ezo-nokogirisou アカバナエゾノコギリソウ)
subsp. subcartilaginea (Heimerl) Kitamura (Aso-nokogirisou アソノコギリソウ)
A. millefolium L. (Seiyou-nokogirisou セイヨウノコギリソウ)
Achillea ptarmica var. yezoensis in Hokkaido
[Left] In Teshio Experimental Forest on August 27 1996. [Right] In Teshio Experimental Forest on September 14 2010.