Going by the flower numbers, lip shape and spur alignment, your photo looks to me to represent Dendrobium dearei, rather than Den. ovipostoriferum.
Quoting Jeffrey Wood:
Dendrobium ovipostoriferum is a closely allied plant described from Kalimantan by J.J. Smith. It differs from Den. dearei in having much smaller stems up to only 22 cm long, shorter (up to 4 cm) black-hairy leaves and few-flowered, or possibly solitary, inflorescences. The size, shape and length to width ratio of the floral segments also differs. The flowers have a gold spot at the centre of the lip which has a crenulate margin to the mid-lobe. The basal claw bears five longitudinal ribs, which are lacking in Den. dearei. The spur-shaped mentum is aligned parallel to but not in a straight line with the lip as in Den. dearei.
Reference: Jeffrey Wood, Orchids of Borneo Vol. 4, 2003.
Dendrobium dearei
Hi Khairimhd,
Going by the flower numbers, lip shape and spur alignment, your photo looks to me to represent Dendrobium dearei, rather than Den. ovipostoriferum.
Quoting Jeffrey Wood:
Dendrobium ovipostoriferum is a closely allied plant described from Kalimantan by J.J. Smith. It differs from Den. dearei in having much smaller stems up to only 22 cm long, shorter (up to 4 cm) black-hairy leaves and few-flowered, or possibly solitary, inflorescences. The size, shape and length to width ratio of the floral segments also differs. The flowers have a gold spot at the centre of the lip which has a crenulate margin to the mid-lobe. The basal claw bears five longitudinal ribs, which are lacking in Den. dearei. The spur-shaped mentum is aligned parallel to but not in a straight line with the lip as in Den. dearei.
Reference: Jeffrey Wood, Orchids of Borneo Vol. 4, 2003.
Cheers.
Gary