Early summer is the season of Bletilla formosana. In Taiwan, the species can be found from sea level to the elevation about 1000 meters.The wild groups dwell on slope where they receive considerable sunlight.
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Oh don't the day seem lank and long, when all goes right, and nothing goes wrong.
And isn't your life extremely flat, when you've nothing whatever to grumble at. W.S. Gilbert
Rai
They are not kin to each other.
But in Taiwan, both genus exist in the wild. Bletilla formosana can be found all over this island while Spathoglottis plicata is restricted to southeast Taiwan. But nowadays, the latter is commonly grown and can be seen everywhere. We seldom grow Bletilla formosana because the wild plants can easily been seen even along the country roads.