Leaf blade without yellow spots, lorate, linear, or linear-lanceolate; perianth lobes with 2, 4, or 6 keels, or sometimes without a keel.

• 没有黄的斑点的叶片，带状，线形，披针形或线形；有2的花被裂片，4，或者6根龙骨，或者有时没有一根龙骨。(10