346 THE ORCHID REVIEW. [NovEMBER, I9It. 
reproduce a photograph of a few of the standard forms, the group being one 
which was exhibited by J. E. Rothwell, Esq., at a meeting of the Massa~ 
chusetts Horticultural Society in June, 1900, and to which a Silver Medal 
was awarded. The central plant (fig. 39), bearing three flowers, is the 
beautiful P. i. Sanderz, still we believe unsurpassed, unless it be by some 
of the seedlings raised from it by self-fertilisation. To the left and below 
it, with only a single flower, is P. i. Laura Kimball (fig. 38), which is closely 
similar in general character. These two were the parents of the yellow 
seedlings mentioned on page 344, and with respect to the one raised by 
Messrs. Keeling & Sons we are informed that a large number of the 
seedlings have reverted to ordinary coloured forms, though perhaps 25 per 
cent. are yellow. Returning to our illustration, we note that the plant om 
the extreme left, bearing three flowers (fig. 37), is P. i. Ernestii, in which 
the blotches on the dorsal sepal persist, though they are very pale in colour. 
To the right of Sander, and near the bottom of the picture, is P..i- 
Sanderianum (fig. 40), in which the flower is uniform yellow throughout, 
except for a few brown hairs on the base of the petals. This variety has 
the valuable quality of giving true albinos when hybridised—at all events 
when united with P. x Maudie it gave the beautiful greenish yellow 
P. Rossetti, all the seedlings of which proved true, while those from P. i. 
Sander and P. Maudiz all reverted to coloured forms. To the right agaim 
we have P. i. Youngianum (fig. 41), and on the extreme right P.1. Wm. 
Millie Dow, a very fine form, in which the spots on the dorsal sepal are 
almost as distinct as in P. i. Ernestii. It is still possible to see the spots 
in the illustration with a lens, though they are much more distinct in the 
original photograph. 
Another case of reversion when yellow varieties of P. insigne are crossed 
was recorded at page 336 of our sixteenth volume. This was P. i. Dorothy 
crossed with P.i. Sander, all the seedlings reverting to ordinary green 
forms, with more or less brown spotting on the dorsal sepal. No yellow 
forms were recorded. 
Lastly, we may recali the case of P. i. Sanderz self-fertilised, in the 
establishment of Messrs. James Veitch & Sons (O. R., xviii. p. 350), where, 
though all the seedlings were yellow, they varied considerably in the size 
and number of the dark dots on the dorsal sepal, while in one they were 
totally absent, the flower thus being comparable with P. i. Gladys, which is 
said to show no trace of brown anywhere. P. i. Gladys we have been 
informed came out of a lot of imported plants, but that is all that we know 
of its history. 
We shall be glad to hear of any other experiments that may have been 
made, and hope to see flowers of any other interesting seedling forms, aS 
the subject is of the greatest interest. 
soa) wale 
