I am trying to sort out and clarify a couple of names .

C. harrisoniana
C. harrisoniae
C. harrisonae
Which is the correct one?

Also I looked on J Pfahl's Enc. & found that under Synonyms
there is:-
Cattleya loddigesii var. harrisoniana

I have also found "loddigesii" spelled differently on my tags??
Any help would be appreciated.

Cheers Wendy (who feels like she's in a maze with this one?)