Identification key to Vietnamese species of sect. Mitriformes. | |
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1a. Stem short, erect; leaves thick and short, densely arranged, often recurved | C. arietinum (Rchb.f.) Garay |
1b. Stem long and pendant; leaves thin and long, loosely arranged, usually falcate | C. williamsonii (Rchb.f.) Garay |