山羊百科，林文智老師的植物、山岳、攝影紀錄

Part I

• FNA Vol. 21 Page 65, 77, 157；269. Silphium Linnaeus, Sp. Pl. 2: 919. 1753；http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=130361

• Perry, Rhodora 39: 281-297 1937；https://www.biodiversitylibrary.org/item/14509#page/311/mode/1up

Perry, Lily M.；NOTES ON SILPHIUM

Part II

Part III