Homework # 19.
Due 01 March 2007
1.. Describe the habitats and the morphology of Phalaenopsis subgenus
Phalaenopsis. What are the most important species of the subgenus? List
three of them.
2.. Describe the habitats and the morphology of P. amabilis, P.
aphrodite,
P. sanderiana, P. schilleriana and P. stuartiana.
3.. Trace the influence on breeding white phalaenopsis of P. Doris,
P.
Cast Iron Monarch, P. Gladys Read and P. Joseph Hampton.
4.. 4. List five recent, highly awarded white phalaenopsis.
5.. What is the typical background of semi-alba phalaenopsis?
6.. What good traits are transmitted in breeding with P. celebensis
and P.
philippinensis?
7.. List some of the problem features of white hybrid phalaenopsis
that
are fatal flaws or lead to point deductions.
8.. Suppose you have a white hybrid phalaenopsis on the judging table
with
two 130 cm long spikes and a total of 27 flowers if excellent shape and
NS
14.2 cm. The spikes are supported along their total length by sturdy
spikes
that are upright for the first 100 cm ands then bent 180 degrees
downward
for the last 30 cm. Would you screen it? Give your reasons.
9.. Suppose you have a P. Southern Goddess (Marie's Destiny x
aphrodite)
on the judging table. It has 37 round, white flowers and one bud well
presented on three branched, arched inflorescences; lip midlobe
suffused
mimosa yellow, side lobes with purple striations basally, prominent
callus
mimosa yellow with numerous purple spots; column white; substance
fleshy;
texture matte. NS. 9.0 cm. Would you want to judge it? What would your
score
be?
Literature:
Christenson, E. A. (2001): Phalaenopsis. Timber Press, Portland.
Orchid Digest (2002): vol. 66(4).
Rohrl, H. 2006: Aeridinae, A Manual.