Dendrobium polyanthum
orchids seeds

Dendrobium polyanthum, syn. Dendrobium primulinum grows in intermediate elevation of monsoon forests in South-East Asia. The thick trailing canes can grow 1 m long. The long lasting white flowers are sweetly fragrant and strongly scented.

Orchid seeds are very small almost like dust and therefore not really countable. The amount of seeds will be between 50 - 100+ 

There are 4 methods of

sowing orchid seeds : 

1. Sowing the orchid seeds next to an orchid from the same genus
2. Sowing on a piece of bark
3. Sowing the orchid seeds using the so-called 'towel method'
4. Sowing over boiling water

All 4 procedures are described in detail on the website of the Orchid Forum:
Orchid Forum

price is for approx 50 seeds.