山羊百科，林文智老師的植物、山岳、攝影紀錄

Family Reference

1. Yang, Yuen-Po and Ho-Yih Liu 2002 Nomenclature Changes for Some Dicots of Taiwan Taiwania 47(2) 175-178
2. Umemoto, Hana, Koh Nakamura, Ayako Maeda, Masatsugu Yokota and Goro Kokubugata 2014

Molecular and morphological data confirm the occurrence of two varieties of Helwingia japonica subsp. japonica (Helwingiaceae) in Kochi Prefecture, Japan Bull. Natl. Mus. Nat. Sci., Ser. B 40 (4) 153–161

1. 方文培 1951 青荚叶属之研究 植物分类学报 1 (2):163-173