Dendrobium anosmum, Lindl. 1845 is accepted species by POWO (Kew). The native range of this species is Sri Lanka, Bangladesh to New Guinea. It is a pseudobulbous epiphyte or lithophyte and grows primarily in the wet tropical biome.

There are several color forms of this species, pink form is more common. Kew accepted only Dendrobium anosmum, different varieties or form are synonym of Dendrobium anosmum.

Previous Awards:

There are 23 AOS awards for Dendrobium anosmum, including different color forms and varieties. I don't see coerulea form in OP so far.

Description (tipo form - pink color):

There are 127 flowers and 3 buds on 10 flowering canes to 68-cm (1 to 3 flowers per inflorescence). Plant is 47-cm wide by 68-cm high. Plant growing in sphagnum moss in 13-cm plastic net basket. 

Flower Measurements:

NS H - 8.0 cm;                   NS V -6.5 cm;

Dorsal Sep. W - 1.4 cm;    Dorsal Sep. L - 4.3 cm;

Petal W - 2.3 cm;               Petals L - 4.0 cm;

Lat/Sepal W - 1.4 cm;       Lat/Sepal L - 3.7 cm;

Lip/Pouch W - 2.1 cm;     Lip/Pouch L - 3.0 cm.

Description (coerulea form):

There are 24 flowers and 0 buds on 2 flowering canes to 43-cm (2 flowers per inflorescence). Plant is 23-cm wide by 43-cm high. Plant growing in sphagnum moss in 10-cm plastic net basket. 

Flower Measurements:

NS H - 8.0 cm;                   NS V -6.4 cm;

Dorsal Sep. W - 1.8 cm;    Dorsal Sep. L - 4.6 cm;

Petal W - 3.0 cm;               Petals L - 4.8 cm;

Lat/Sepal W - 1.5 cm;       Lat/Sepal L - 3.5 cm;

Lip/Pouch W - 3.2 cm;     Lip/Pouch L - 3.4 cm.