1892. | Relation of Fall to Spring Blossoming Plants. 241 
other species, here not mentioned, flower in spring, the latest 
until May. The relation of the fall to the spring flowering 
species is evident. 
Sternbergia. Of the European species St. lutea and St. 
sicula blossom in the fall, together with the leaves, or the 
flowers have at first a slight start ahead of the leaves; St. col- 
chiciflora blossoms in autumn, but the leaves appear first in 
spring with the fruit, thus pointing to a former spring flower- 
ing habit, as suggested in a former paper for the similar habits 
of Colchicum autumnale. St. Etnensis still flowers in May, as 
though to remind the investigator of the former spring flower- 
ing habit of this genus. 
Leucojum. Among European species L. roseum flowers in 
the fall with the leaves, but the leaves have scarcely made 
their appearance, or have only half the length of the flowering 
stem when the flowers begin to unfold. L. autumnale begins 
to flower in the fall also when the leaves are still concealed or 
just commencing to peep forth from the ground. Among the 
spring flowering species L. trichophyllum has flowers in blos- 
som often when the leaves are still concealed, but the leaves 
may at times catch up in development during the flowering 
Period. In L. vernum a slight difference of development Is 
occasionally noted. The other spring flowering species, L. 
Hernandezii, L. zstivum, L. hiemale, have the leaves fully de- 
veloped during the flowering season. The retarded develop- 
Ment of the leaves of autumn species in general finds its ana- 
logy in many spring flowering species. It is not normal for 
late summer flowering genera or species. 
uropean species of Amaryllidacee present other good 
Cases of fall flowering plants, although none of the species 
faves aré not yet fully developed. S f the species of 
: y developed. Some o ; 
forbularia may sometime in the future take up the habit of 
: flowering. C. Bulbocodium begins to flower often in Jan- 
and C. cafitabrica, even in December, but at present 
a . ; 
~ flowering has begun, a fact which is also true 
