Comparison of the morphological characters of Cirsium Mill. subsect. Australicirsium Kitam. A C. arisanense Kitam B C. hosokawae Kitam C C. taiwanense Y.H.Tseng & Chih Y.Chang 1 cauline leaf, adaxial view 1' cauline leaf, abaxial view 2 capitulum 3 inner phyllary 3' middle phyllary 3" outer phyllary 4 floret 4' floret (pappus removed) 5 synantherous stamens 6 style branches 7 achene 7' achene with pappus.