One-Leaf Eria is a small sized, tree-dwelling or
terrestrial orchid with a noded, cylindrical, apically narrowing
pseudobulb carrying a single, apical, erect leaf which is widest in the
upper part, narrowing below into the elongate, stalked base. The plant
blooms in the late spring on a basal, erect, 4 cm long, up to 10
flowered inflorescence. Flowers are greenish white, sepals and petals
with red veins, below sparsely grayish white velvet-hairy, column
white, foot reddish brown. Flower-stalk and ovary are 3-4 mm, densely
grayish white velvet-hairy. Dorsal sepal is elliptic, about 3 x 1.5 mm,
pointed; lateral sepals obliquely ovate, about 3.5 x 2.2 mm, pointed.
Petals are ovate-lanceshaped, about 3 x 1.5 mm, hairless, pointed; lip
rhombic or broadly elliptic in outline, about 3 x 2.5-3 mm, blunt, base
and tip fleshy, shallowly 3-lobed or nearly unlobed, base with 1
reddish brown oblong callus about 1 mm, on either side with a rounded
and a subobovate-rounded reddish brown callus, and near tip with a
reddish brown anchor-shaped median appendage. Column is about 1 mm,
foot about 1.5 mm. One-Leaf Eria is native to E. Himalaya to China (S.
Yunnan) and Malaya, Borneo.
Flowering: June-July.
Identification credit: Jambey Tsering
Photographed in Bhalukpong, West Kameng, Arunachal Pradesh.
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The flower labeled One-Leaf Eria is ...