Stalkless Swan Flower is a herb with rhizome small,
3 x 0.2 cm, conical, light yellow-grey inside. Leafy shoots are 1-3 ft
high, lower vegetative bracts green to reddish-green, sparsely
velvet-hairy. Leaves are 5-20 x 2-5 cm, oblong-lanceshaped, tip
tapering, lower surface densely velvet-hairy, upper surface sparsely
velvet-hairy; shortly stalked or stalkless. Flowers are borne at
branch-ends, in 10-20 cm long, erect clusters, bearing few to many
slender branches in the axils of bracts. Flowers are 3.5-4 cm long,
calyx flat, 8 mm long, shortly 3-lobed, sepals equal, hairless. Flower
tube is 1.8-2 cm long, orange, densely velvet-hairy; petals unequal,
spreading; dorsal lobe about 6 x 3 mm, cup-shaped with an apical hood,
orange-yellow, lower middle portion minutely velvet-hairy; lateral
lobes about 5 x 3 mm, ovate, orange-yellow, hairless. Lip much longer
than the flower lobes, 12 x 4 mm, linear, tip notched, orange-yellow,
hairless. Lateral staminodes about 16 x 3 mm, linear, tip tapering,
orange, outer surface velvet-hairy. Staminal filament 2 cm long,
slender; anther small, about 4 mm, thecae parallel, without appendages,
connective slightly projecting to form a hood at the tip. Style is
long, protruding from the anther lobes, mouth of the stigma hairy.
Fruit is 2 x 1.5 cm, spherical to ovoid, slightly warted, splitting
open. Stalkless Swan Flower is found in South India to Thailand.
Flowering: July-September.
Identification credit: Prabhu Kumar K.M.
Photographed in Thattekad Bird Sanctuary, Kerala.
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The flower labeled Stalkless Swan Flower is ...