| For the album form of Paph. concoor,
Paph. concolor forma sulphurinum was described by Mr. Olaf
Gruss in Die Orchidee 52 (5), 575, 2001. In truth, the Paph.
concolor forma sulphurinum was described in 1888 as Cypripedium
concolor var. sulphurinum. This yellow form without
any red pigmentation were described by Reichenbach and now combinated
to a forma. The Paph. concolor var. imaculatum 2000 were described
as a variety and not as a forma and has also a yellow colour.
On the other hand, Paph. concolor forma album was described
by Guido Braem but without a type. So, this is described
by Mr. Olaf Gruss as the correct species name now officialy.
The forma album shall have a white groundcolour and would be
another form whe it would be described correctly.