Riverstream Orchid is a smaller, terrestrial orchid
with smaller, ovoid pseudobulbs carrying linear-elliptic, pointed,
arched leaves with fine toothed margins. The plant blooms in the winter
and spring on a basal, erect, basally sheathed, 10 cm long, solitary to
1-3 flowered, shorter than the leaves inflorescence, carrying jasmine,
scented to lemon scented flowers held low amid the leaves. It has been
a perrenial favorite of Japanese and Chinese culture for centuries.
Flowers are variable in color, usually yellowish green with purplish
brown venation, sometimes olive-green, membranous; flower-stalk and
ovary 2-4 cm. Sepals are nearly oblong to oblong-obovate, 25-40 x 8-12
mm, tip blunt to pointed. Petals are spreading forward or loosely
embracing column, obovate-elliptic to oblong-ovate, 17-30 x 8-12 mm.
Lip is nearly ovate, 14-28 mm, obscurely 3-lobed; lateral lobes erect,
not fused to basal margins of column; mid-lobe strongly recurved,
broadly ovate, 7-10 x 7-10 mm, margin slightly wavy. Riverstream Orchid
is found in Himalaya to China and Japan, at altitudes of 300-2200 m.
Identification credit: Jambey Tsering
Photographed in Dirang, West Kameng, Arunachal Pradesh.
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The flower labeled Riverstream Orchid is ...