MISSOURI BOTANICAL GARDEN BULLETIN 129 
as the type flower, the foliage likewise showing Whitaker 
influence. This was carefully self-pollinated during 1920, the 
seedlings bringing forth albino flowers the next flowering 
season. In 1921 the finest plant was again selected and self- 
pollinated, producing the same type of flowers the following 
season. The desired hybrid was obtained by selection during 
three years, thus proving that the white coloration is fixed, 
provided of course that all foreign pollen is excluded. 
It having been proved that the flowers had finally reached 
a stage of development superior to the white-flowered 
N. gracilis, specimen flowers were submitted to the Society of 
American Florists and Ornamental Horticulturists in eon- 
vention at Kansas City, August 15, 1922, and the lly was 
awarded honorable mention. Mr. Charles Tricker, water-lily 
specialist of Arlington, N. J., visited the Garden after the 
convention, in the eapacity of official judge, to report on the 
condition of the entire plant as growing in the pool. He 
stated that ‘‘the new hybrid presents the biggest one Jump 
in the development of a new water-lily to date.’’ The size of 
the flowers varies from eight to ten inches in diameter. A 
description of the lily will appear in a forthcoming issue of 
the Annals of the Missouri Botanical Garden. 
xX NYMPHAEA “HENRY SHAW” PRING 
(N. castaliiflora * N. castaliiflora) 
This hybrid, named in honor of the founder of the Missouri 
Botanical Garden, has been shown in the Garden collection 
annually since 1917, and during its flowering period is 
invariably pronounced by visitors to be the most beautiful of 
the blue water-lilies. One of the foremost growers in the 
East, on a recent visit to study the Garden collection, 
expressed his opinion that this variety had great merit from 
a_commercial viewpoint. 
The plant dates from 1917, having appeared in the second 
generation of N. castaliiflora (see Pring, Hybrid Nymphaeas. 
Ann. Mo. Bot. Gard., vol. 4, p. 3), the blue color being reces- 
sive and aggregating about two per cent. It is of interest 
that later experiments of self-pollinating ‘‘Mrs. Edwards 
Whitaker’’ yielded this same recessive blue-flowered type 
(N. castaliiflora being’ the staminate parent of N. ‘‘Mrs. 
