Siphocranion macranthum is a species of flowering plant in the family Lamiaceae.

It is commonly known as big-flower siphocranion and tong guan hua in China.

[1] It is a perennial herb that is native to Assam, Myanmar, Tibet, Vietnam, South China and East Himalayas.

[2] S. macranthum grows in subtropical evergreen and mixed forests.

This Lamiaceae article is a stub.