CORRESPONDENCE.. 845 
Through the kindness of Prof. Asa Gray and Mr. Darwin, I am enabled to 
record another double Orchid, which presented almost precisely similar changes 
to those found by me in O. aranifera. The plant in question is Pogonia 
ophioglossoides, and was found b Dr. J. Paine in a bog near Utica, New York. 
This American Orchid, and especially my O. aranifera, go far to confirm 
dalis similar to those mentioned by him in the last number of the Journal, but 
even more curious. In the flowers I examined there were the three sepals as 
dicating possibly the future sepals. In other minute buds the central dom 
was surrounded at the base by a four, five, or six-lobed cup ; but as it was im- 
possible to make sufficiently accurate examination of these rudimentary buds, 
I refrain from giving further details, but will merely add that these flowers pre- 
sent, so far as I am aware, the only recorded instance of median floral prolifi- 
cation in Orchids. : 
Mr. Currey forwarded me some time since a flower of Oncidium sp., which . 
‘I may term spuriously double; the sepals and two upper petals were normal, 
but the lip was divided into three all but separate pieces, confluent with the 
* * Fertilization of Orchids,’ p. 292. 
