The Periodicity of Semi-Latent Characters. 329 
the course of the summer. They were split fasciations, 
but the division had gone somewhat deeper, as was vis- 
ible by the individual leaves being torn from below up- 
wards with one half adhering to the one arm of the 
fork and the other half inserted on the other arm. Such 
leaves occurred on several shoots, but, as already stated, 
always at the same height on the plant. 
The lower end of many racemose inflorescences is 
a favorite place for anomalies. Thus slightly double 
varieties of Gladiolus bear double flowers almost always 
in this position only. The racemes of Primus Padus 
bear lateral racemes in this position almost exclusively; 
and, in other cases, it is also only in this position that 
tetramerous flowers are borne. Many double varieties 
are known to bear single flowers at the end of the flow- 
ering period, and sometimes also at the beginning. These 
flowers alone set seed, while the double ones are sterile. 

It is well known amongst horticulturists that in multi- 
plying perennials and bulbs by seed, the value of the 
plants cannot definitely be estimated in the first year in 
which they flower. It is not until the second or the 
third year of the flowering that their qualities are dis- 
played to their full advantage. Many specimens of 
Chrysanthemum indicum, which when raised from seed, 
are only half double in the first year, will develop double 
flowers in the second year if grown from cuttings. 1 The 
varieties with tricolored leaves of Pelargonium zonalc 
tricolor do not exhibit their full range of color until the 
second year after their seed is sown. 2 To breeders of 
tulips, hyacinths and other bulbous plants this rule is 
well known. 
I REID and BORNEMANN'S Catalogue, 1891, p. 20. 
SUTTOX'S Catalogue, 1891, p. 77. 
