292 THE ORCHID REVIEW. [OctToser, 1903. 
p. 22), collected in Yunnan by Dr. Henry, and apparently most allied to: 
the Himalayan P. preecox. The flowers are said to be white. 
P. YUNNANENSIS (Coelogyne yunnanensis, Rolfe in Journ. Linn. S005 
XXXVI, p. 23), collected in Yunnan, both by Hancock and Dr. Henry, and 
allied to P. Delavayi. The flowers are described as red to purple. 
R. A. ROLFE. 
$e +__ 
STORING POLLEN. 
REFERRING to your remarks on pollen keeping, at page 278, I have pleasure: 
in giving you the results of my limited experiments in that direction. 
I do all the hybridising here, and, to make the crosses I had set my 
mind on, I soon found I must get some method of storing pollen. I 
tried various means, and the one I have found most successful seems: 
too simple to write about. It is to remove the pollen carefully from the 
flower ; wrap in the blue tissue paper florists use ; write name and date on,. 
and put in atin box. I was led to try the blue paper, after failure with 
other means, by remembering that that was used to preserve white materials. 
from fading, and thought it might possibly answer my purpose, and preserve: 
the pollen in some way. The following are the results of its use, taken. 
from my record book :— 
Cattleya citrina x Triane alba. Trianze pollen removed January 16th; 
used April 25th (over three months). 
Cattleya Triane x Lelio-cattleya x Charlesworthii. Pollen removed 
January 29th; used March 8th (about seven weeks, and hybrid pollen, too). » 
Lelia purpurata x Cattleya Percivaliana. Pollen removed March 27h ¥. 
used June 13th (eleven weeks). 
Cattleya amethystoglossa x C. Trianz. Pollen removed February 
24th ; used April 16th (about seven weeks). 
From all these crosses we have seedlings up, proving the pollen to have 
been sound when used. I also find the following :— 
Cattleya Mossie x Lelia anceps. Pollen removed November 29th; 
used July roth (about seven-and-a-half months). The flower faded natur- 
ally, and the pod formed, but, unfortunately, was knocked off. 
Cattleya Mossie x C. Trianze. Pollen removed February 26th; used 
July roth (about five-and-a-half months). The pod formed all right, but I 
only let it go about half way, as it was only for an experiment, and the 
flowers were not good enough to raise from. 
_ Brassavola Digbyana I have used successfully after six weeks, and 
Odontoglossums Pescatorei and crispum after three months ; but Cattleya 
Dowiana aurea and Sophronitis grandiflora were useless after a very short 
time. 
Sa ce ek ae ia aR aod 
ene 
Ses yates ene 
