2023 Volume 98 Issue 1 Pages 1-12
A new species, Saussurea yachiyotakashimana Kadota from Hokkaido and two new species, S. ochiaiana Kadota and S. toyoguchiensis Kadota from Honshu, are described from the family Asteraceae. Saussurea yachiyotakashimana from eastern Hokkaido is different from S. duiensis F.Schmidt and S. hamanakaensis Kadota by having elongated branches with drooping apices, longer cauline leaves, and with outer and middle involucral phyllaries lacking purplish rim. Saussurea ochiaiana from Hiroshima Pref. is different from S. modesta Kitam. and S. kirigaminensis Kitam. by having robust horizontal rhizomes bearing several scapes, a well-branched stem with elongated branches ending in 2–3 capitula, somewhat fleshy, dimly lustrous cauline leaves with auriculate petiole bases and 6–7-seriate involucral phyllaries. Saussurea toyoguchiensis from Nagano Pref. is distinguished from S. kaialpina Nakai by having cylindrical, greenish involucres 10–12 mm long, 5–6 mm in diam., subcoriaceous ascending involucral phyllaries, coarsely dentate radical leaf blades and longer achenes.
