Finding
SITF confirms this plant as Dendrobium particolor (Apr 2025). This species is similar to D. keystianum, but can be distinguished by a smaller flower and shorter floral bracts. It differs in having slightly narrower leaves, a narrower sepal, a shorter mentum, and a shorter lip. These flowers and bracts are too small to fit D. keystianum. The description of D. keystianum says the bracts are 1 cm. The floral bracts on this plant are .3cm. This plant matches the drawing and description found in the On-Line "Orchids of New Guinea" https://www.orchidsnewguinea.com/orchidinformation/species/speciescode/2920
Overall Length Of Growth Cane: to 100 cm
Number Of Leaves Per Growth Or Cane: 34 or more
Leaf Length: 6 cm
Leaf Width: 1.5 cm
Leaf Margin: entire
Leaf Shape: ovate at base to acute-laceolate at apex
Leaf Petiole Length: 1.7 cm
Pseudobulb Length: 100 cm
Pseudobulb Width: 0.4 cm
Pseudobulb Margin: cylindrical
Pseudobulb Distance: adjacent
Inflorescence Overall Length: 2.8 cm
Inflorescence Dist Base To Bud: 0.2 cm
Inflorescence Dist Bet Flowers: adjacent
Floral Bracts Length: 0.3 cm
Floral Bracts Width: 0.1 cm
Ovary Length: 1.0 cm
Ovary Width: 0.2 cm
Ovary Shape: cylindrical
Ovary Color: burnt orange
Ovary Texture: ridged but smooth
Flower Natural Spread Length: 1.9 cm
Flower Natural Spread Width: 0.8 cm
Dorsal Sepal Length: 0.8 cm
Dorsal Sepal Width: 0.4 cm
Lateral Sepals Length: 1.4 cm
Lateral Sepals Width: 0.5 cm
Petals Width: 0.3 cm
Judging Center: Northeast
Award Number: 20255060
Award Date: February 01, 2025
Awarded As: CBR
Twenty-four nicely colored, slightly cupped, tubular flowers and forty-two buds in various states of maturity borne in clusters of two to four flowers on 22 clustered inflorescences which sparsely emerge from the nodes of 12 erect deciduous canes of a robust 33 cane plant grown in sphagnum moss in a 20-cm plastic pot; reed-like cylindrical canes 0.4 cm in diameter and up to 100-cm long; leaves entire, alternate, ovate-lanceolate, to 1.5 cm wide by 6 cm long; dorsal sepal oblong-elliptic and petals oblong, fuchsia pink, darker fuchsia basally; lateral sepals ovate-triangular, fuchsia pink, burnt orange ventral half, fused along ventral margin to form mentum which encloses lip's nectary spur; lip without lobes, blunt, clawed along apical margin, burnt orange, adnate to column; column fuchsia pink; anther cap white enclosing to black pollinia; ovary burnt orange; substance thin; texture matte; species native to New Guinea; recognized for unique erect growth habit within Dendrobium section Calyptrochilus. Origin - bought at the Redland Orchid Show