描述了产于浙江的菊科（Asteraceae）蓟属（Cirsium Mill.）2个新种：浙江垂头蓟（C. zhejiangense Z. H. Chen et X. F. Jin）和沼生垂头蓟（C. paludigenum Y. F. Lu， Z. H. Chen et X. F. Jin），并给出了新种与近缘种的区别特征。浙江垂头蓟与C. yezoense （Maxim.） Makino最接近，区别主要在于本种总苞片5或6层，外层总苞片较内层总苞片短，叶片较小，长15~32 cm，宽6~15 cm，上面疏被长柔毛，下面疏被短柔毛。沼生垂头蓟与C. tashiroi Kitam.和C. sieboldii Miq.接近，与前者的区别在于本种总苞片5或6层，先端直立，茎中上部疏被白色长柔毛，基生叶披针形、椭圆状披针形或椭圆形，羽状中裂或不裂；与后者的区别在于本种总苞钟形，直径2.0~3.5 cm，总苞片5或6层，基生叶披针形、椭圆状披针形或椭圆形，羽状中裂或不裂。

Cirsium zhejiangense Z. H. Chen et X. F. Jin and C. paludigenum Y. F. Lu， Z. H. Chen et X. F. Jin， two new species in Cirsium Mill. （Asteraceae） from Zhejiang in China， were described and illustrated. The diagnostic characters between two new species and their alliced species were given. C. zhejiangense mostly resembles C. yezoense （Maxim.） Makino， but differs in its phyllaries in 5 or 6 rows， outer phyllaries shorter than inner ones， leaf blades smaller （15-32 cm long， 6-15 cm wide）， adaxially sparsely villose， abaxially sparsely pubescent. C. paludigenum is morphologically similar to C. tashiroi Kitam. and C. sieboldii Miq.， but it differs from the former in its phyllaries in 5 or 6 rows， apex erect， stems sparsely white villose on upper part， basal leaves lanceolate， ellipticlanceolate or elliptic， pinnatifid or undivided; it differs from the latter in involucre campanulate， 2.0-3.5 cm in diameter， phyllaries in 5 or 6 rows， basal leaves lanceolate， ellipticlanceolate or elliptic， pinnatifid or undivided.