Table 2 in Two new species and a new combination from Zhejiang, East China

Table 2. Comparisons of the achenes and pollen grains among Ixeridium dimorphifolium (two samples) and I. beauverdianum. Traits/speciesIxeridium dimorphifolium (Suichang)I. dimorphifolium (Qingyuan)I. beauverdianumAcheneshapenarrowly fusiform, slightly compressedlinear-fusiform, slightly compressedfusiform, slightly compressedlength4.98 ± 0.42 mm5.54 ± 0.60 mm4.72 ± 0.34 mmsurfacefinely spiculate, with ribs finely spiculatefinely spiculate, with ribs finely spiculatefinely spiculate, with ribs finely spiculateribwith spicule similar to surfacewith spicule similar to surfacewith spicule longer than those on surfaceapexgradually narrow to a beakgradually narrow to a beakabruptly narrow to a beakPollenshapetricolporate, sphericaltricolporate, sphericaltricolporate, sphericalsize27.55 ± 3.60 μm26.70 ± 2.84 μm24.62 ± 1.95 μmsurfaceechinophateechinophateechinophate表2 两形叶苦荬菜（Ixeridium dimorphifolium）的2份样本与毛叶苦荬菜（I. beauverdianum）的瘦果及花粉粒性状比较。 性状/物种 两形叶苦荬菜（遂昌居群） 两形叶苦荬菜（庆元居群） 毛叶苦荬菜 瘦果 形状 狭纺锤形，稍压扁 线状纺锤形，稍压扁 纺锤形，稍压扁 长度 4.98 ± 0.42 mm 5.54 ± 0.60 mm 4.72 ± 0.34 mm 表面 具细刺状突起，肋部具细刺 具细刺状突起，肋部具细刺 具细刺状突起，肋部具细刺 肋部刺毛 与表面刺毛相似 与表面刺毛相似 长于表面刺毛 顶端 渐狭成喙 渐狭成喙 骤狭成喙 花粉粒 形状 三孔沟型，球形 三孔沟型，球形 三孔沟型，球形 大小 27.55 ± 3.60 μm 26.70 ± 2.84 μm 24.62 ± 1.95 μm 表面纹饰 棘状纹饰（echinophate） 棘状纹饰 棘状纹饰