>Is a microscope absolutely necessary to get a good look at the seed coat
>of Drosera seeds? Can the difference between, for example, a papillate
>(pimpled) and a crateriform (crater-like) seed coat be seen with a good hand
>lens?
A hand lens (and a sure hand!) should be sufficient to see the difference.
Can I conclude from your question that _D.spec._"Auyan-tepui" has
conspicuous stipules (otherwise you didn't need seed), and the seeds are
ovoid and papillate?
Kind regards, good luck!
Jan