Template:Hu & Barretto, 1976

• Hu, S.-Y. & Barretto, G. 1976. New species and varieties of Orchidaceae from Hong Kong. [香港蘭花新種之發現]. The Chung Chi Journal: Primarily Devoted to Far Eastern Studies 13(2): 1–34. HKUL (Online) HKUL (PDF)  
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