Seventeen species and two subspecies are found in kerala.
Some of the dendrobium species available in kerala are of the following:-
1) Den . aqueum
Flowers are large and white and lip yellow and puberulous .
Occurrence : Palghat District
This is a large flowered species.
Occurrence : Wayanad and Kannur Districts.
3) Dendrobium crepidatum
This species were collected from Meghalaya . This species occurs in two forms-one with normal flowers and the other with more or less actinomorphic and self pollinating flowers .
Occurrence : Wayanad and Kannur Districts
4) Dendrobium herbaceum
These species were collected from ‘ East India ‘ and it much branched and small flowered .
Occurrence : Trivandrum, Idukki, Palghat, Wayanad and Kannur Districts
5 ) Dendrobium macrostachyum
This species were collected from Sri Lanka. This is the most common species of Dendrobium in the lower elevations in Kerala.
Occurrence : Trivandrum, Quilon, Kottayam, Idukki, Thrissur, Palghat, Calicut, Wayanad and Kannur districts.
6 ) Dendrobium nanum
These species were collected from Bababoodan hills in Karnataka.
Occurrence : Pathanamthitta, Palgahat and Wayanad districts.
This species were collected from Ootacamund in Nilgiris.
Occurrence : Trivandrum District.