Bulbophyllum hainanense Z.H.Tsi – a new report for India from Arunachal Pradesh.
Epiphytic. Rhizome creeping, slender, branching, rooting at nodes. Pseudobulb absent. Leaves 1-1.5 cm apart, oval-elliptic, 0.8-1.2 X 0.4-0.7 cm, oblique, petiole short, apex acute and notched. Scapes from nodes, with 2-3 sheaths; 2-flowered. Sepals ovate-triangular to ovate-lanceolate, 0.5-0.8 X 0.3-0.5 cm, apex acute; lateral oblique. Petals oblong-spatulate to oblong-obovate, 0.3-0.5 X 0.2 cm, apex obtuse. Lip broadly ovate, longer than petals, recurved, apex acute. Floral bracts ovate-lanceolate, shorter than pedicellate ovary.
5400 ft; April; Extremely rare.
Swami, N. (2017). Orchids of Ziro: Arunachal Pradesh 1-160. Pushpa Mrga, India.
Neottia tenuis(Lindl.) Szlach. – a new report for Arunachal Pradesh.
Terrestrial or lithophytic. Plants 7-15 cm. Stem cylindric, 5-9 cm, slender, rooting from base. Leaves ovate-lanceolate, 2.2-3 X 1.2-1.5 cm, opposite, sessile, apex acute. Peduncle and rachis puberulent; many flowered. Sepals lanceolate, 0.5 X 0.2-0.3 cm, apex acute; lateral slightly falcate. Petals lanceolate, shorter than sepals, apex acute. Lip obovate-rotund to obcordate, longer than sepals, apex lobed and mucronate, lobules subrounded. Floral bracts ovate-lanceolate, shorter than ovary.
Herminium biporosumMaxim. – a new report for India from Arunachal Pradesh.
Terrestrial or lithophytic. Plants 7.5-20 cm. Tubers subglobose to subconic, 0.7-1, 1-1.2 cm in diameter, hairy. Stem cylindric, 1.5-2 cm, slender, sheathed. Leaf oblong-lanceolate, 2-4.5 X 0.7-1.2 cm, petiole-like base and tubular sheath, apex subacute. Inflorescence 5-15 cm, slender; subdensely flowered. Sepals unequal, apex subacute; dorsal broadly ovate, 0.2-0.3 X 0.1-0.2 cm; lateral lanceolate, 0.2-0.4 X 0.2-0.3 cm, oblique, slightly falcate. Petals ovate, as long as dorsal sepal, apex obtuse. Lip oblong to lanceolate, longer than sepals, base dilated and with 2 pits, apex acute. Floral bracts ovate, short.
Bulbophyllum raskotiiJ.J.Verma., Schuit. & de Vogel, a new report for India from Arunachal Pradesh.
Epiphytic or lithophytic. Rhizome creeping, 0.2-0.3 cm in diameter, branching, sheathed. Pseudobulbs 1-2.5 cm apart, ovoid-conic, 1-1.5, 1.5-2.2 cm in diameter, slightly curved, rooting from base. Leaf oblong-elliptic, 3.5-5 X 1.2-1.5 cm, petiolate, apex obtuse and retuse. Scapes from base of pseudobulbs, with 2-3 sheaths; few flowered. Sepals ovate-lanceolate, 0.5-0.7 X 0.3-0.4 cm, apex subacute. Petals broadly ovate to suborbicular, 0.3-0.5 X 0.2-0.3 cm, apex obtuse. Lip shorter than sepals, 3-lobed; lateral lobes rotund to suborbicular, spreading, apex obtuse to rounded; terminal lobe linear-lanceolate, apex acute to subacute. Floral bracts ovate-lanceolate, shorter than ovary.