Terrestrial Orchid Germination

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We have received our Seed Order (thank you!) and have a few questions about the germination of certain Terrestrial Orchid Species. 
Our main concerns are with the techniques used to germinate various Cypripedium species. Specifically Cypripedium Kentuckiense, C. Parviflorum var pubescens, C. Reginae.  I've done a fair bit of research on the laboratory techniques, though have never attempted them myself. 
Are there any other methods worth trying that result in high germination rates, or with less intensive methods? Any advice or resources are would be greatly appreciated. Also I'm curious about the stage in which Cypripedium seeds on the list are collected? Are they mature dormant seeds?
Also I'm curious about the germination of Epipactis Gigantea and E. Helleborine. I've seen a few posts about these plants and would love any info. 
Thanks in advance!